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JSON formatter, SQL formatter, Regex tester, JWT decoder, Base64 encoder, Markdown converter, ER diagram maker, and 50+ more code tools. Paste → transform → copy. No server round-trips, no rate limits.
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219+ free browser-based tools for developers, marketers, students, and everyday users. Format code, edit images, convert files, run calculations | no account, no upload, no install.
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Word counter, image compressor, PDF tools, currency converter, BMI calculator, QR code generator, colour picker, and more | zero technical knowledge required.
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All 219+ free tools
Every live tool grouped by category. No tools are hidden. Click any card to open its dedicated page | no sign-up required.
Free Security & Encoding Tools
Hash, encrypt, compare, and decode sensitive values entirely in your browser — no server, no exposure.
AES Encrypt/Decrypt — free online tool, no sign-up
Encrypt and decrypt text with AES-GCM using the Web Crypto API — secure client-side encryption tool.
Base64 Encode/Decode — free online tool, no sign-up
Encode and decode text to and from Base64 format instantly in your browser — essential developer utility.
Bcrypt Compare Tool — free online tool, no sign-up
Compare a plaintext password against a bcrypt hash locally — verify hashes without sending data anywhere.
Bcrypt Generator — free online tool, no sign-up
Generate bcrypt password hashes and verify passwords against stored hashes — client-side, zero data exposure.
Hash Compare — free online tool, no sign-up
Compare computed hashes against stored values across MD5, SHA-256, and other common algorithms.
JWT Decoder — free online tool, no sign-up
Decode and inspect JSON Web Tokens to view header, payload, and signature structure — essential for API debugging.
JWT Signer — free online tool, no sign-up
Create HS256 JWT tokens from a payload, headers, and secret — test auth flows without a backend.
MD5 Hash Generator — free online tool, no sign-up
Generate MD5-style hash values from any text input — instant browser-side checksum verification.
Password Generator — free online tool, no sign-up
Generate secure, random passwords with customizable length, numbers, and special characters — no data sent to any server.
Password Strength Checker — free online tool, no sign-up
Score passwords for length, character variety, and repetition risk — fully private, nothing sent anywhere.
QR Code Generator — free online tool, no sign-up
Create QR codes for URLs, text, WiFi credentials, and email with one-click download — built using AI-optimized encoding.
RSA Key Generator — free online tool, no sign-up
Generate RSA-OAEP public and private key pairs in PEM format — essential for asymmetric encryption workflows.
SHA-256 Hash Generator — free online tool, no sign-up
Generate SHA-256 hash values with optional salt for enhanced password security and integrity verification.
Free Developer Tools Tools
Format code, validate data structures, convert formats, and debug developer input — all browser-native.
Base64 Image Encoder — free online tool, no sign-up
Convert uploaded images directly into Base64 strings — embed images inline in emails, HTML, or CSS.
Class Diagram Maker — free online tool, no sign-up
Draft Mermaid-compatible UML class diagrams with a browser-based editor — visualize OOP architecture using AI.
Cron Expression Parser — free online tool, no sign-up
Validate cron schedules and preview upcoming run times — debug cron jobs and scheduled task expressions.
CSS Minifier/Formatter — free online tool, no sign-up
Minify or beautify CSS code for production optimization or readable development — instant browser-side processing.
CSV to JSON Converter — free online tool, no sign-up
Convert CSV data to JSON and vice versa with ease — perfect for data import/export and API payload preparation.
Data URI Generator — free online tool, no sign-up
Generate inline data URIs from uploaded files and text assets — eliminate external HTTP requests for small assets.
Environment Variables Parser — free online tool, no sign-up
Parse .env file content into structured JSON and key/value tables — debug dotenv configs instantly.
ER Diagram Maker — free online tool, no sign-up
Create entity-relationship diagrams with schema notes and Mermaid output — design database schemas using AI.
Flowchart Maker — free online tool, no sign-up
Build process diagrams and flowcharts from Mermaid-style syntax — visualize workflows and logic using AI.
HTML to Markdown Converter — free online tool, no sign-up
Convert raw HTML into clean readable markdown syntax — useful for blog migration and content portability.
HTML/XML Escape — free online tool, no sign-up
Convert special characters to and from HTML entities — prevent XSS and fix broken markup instantly.
JavaScript Minifier/Formatter — free online tool, no sign-up
Minify or beautify JavaScript code for production builds or debugging — reduce JS bundle size instantly.
JSON Formatter & Validator — free online tool, no sign-up
Format, validate, and minify JSON with error highlighting — instantly beautify messy JSON responses.
JSON Path Finder — free online tool, no sign-up
Search nested JSON objects and return matching paths for keys and values — JSONPath query tool.
JSON Schema Builder & Validator — free online tool, no sign-up
Generate JSON Schema from sample payloads, validate example objects, and inspect required fields or type mismatches. It is useful when teams need portable contracts without spinning up a backend.
JSON to XML Converter — free online tool, no sign-up
Transform JSON objects into formatted XML markup — convert API payloads to XML for SOAP and legacy integrations.
Markdown to HTML Converter — free online tool, no sign-up
Render markdown into clean sanitized HTML with a live preview — convert .md files to web-ready markup.
Pretty Log Formatter — free online tool, no sign-up
Clean up JSON logs, key-value lines, and stack traces for readability — debug server logs instantly.
Query String Parser — free online tool, no sign-up
Parse URLs and query strings into readable key-value parameters — debug API requests and redirects instantly.
Regex Escape Helper — free online tool, no sign-up
Escape plain text safely for regular-expression literals — convert strings to regex-safe patterns.
Sequence Diagram Maker — free online tool, no sign-up
Visualize API and system interactions with Mermaid-compatible sequence diagrams — document microservices using AI.
SQL Formatter — free online tool, no sign-up
Format and beautify SQL queries for better readability — clean up messy SELECT statements and JOIN chains.
SQL to JSON Converter — free online tool, no sign-up
Turn SQL INSERT statements into JSON data structures — useful for data migration and API payload generation.
URL Encode/Decode — free online tool, no sign-up
Encode and decode URLs with percent-encoding support — fix broken query strings and API parameters instantly.
UUID Generator — free online tool, no sign-up
Generate UUIDs (v4) in bulk with instant copy and export — unique identifiers for databases and APIs.
XML Formatter & Validator — free online tool, no sign-up
Pretty-print XML and flag malformed markup in your browser — format RSS, SOAP, and config XML files.
YAML to JSON Converter — free online tool, no sign-up
Convert between YAML and JSON formats instantly — essential for CI/CD, Kubernetes, and API config workflows.
Free Text & AI Content Tools
Transform, analyze, humanize, paraphrase, detect, and generate text — with AI and without.
AI Paraphrasing Tool — free online tool, no sign-up
Paraphrase and rewrite text using AI to sound natural, improve clarity, and bypass AI content detectors.
AI Prompt Generator — free online tool, no sign-up
Turn simple ideas into highly detailed, optimized prompts for Midjourney, ChatGPT, Stable Diffusion, Claude, and DALL-E using AI.
AI Story & Novel Generator — free online tool, no sign-up
Generate captivating short stories, novel chapters, and fanfiction using AI — choose genre and let AI write the rest.
AI Text Cleaner — free online tool, no sign-up
Clean and humanize AI-generated text to sound natural and help bypass AI detectors — powered by AI.
AI Text Detector — free online tool, no sign-up
Analyze text and estimate the likelihood it was generated by AI — detects ChatGPT, Claude, Gemini, and more using AI.
AI Text Humanizer — free online tool, no sign-up
Detect robotic writing patterns and rewrite AI-generated text into a more natural, human-sounding draft using AI.
Alias Generator — free online tool, no sign-up
Create usernames, pet names, and brand-style aliases instantly — generate unique handles using AI.
Binary/Text Converter — free online tool, no sign-up
Convert plain text into binary and decode binary back to text — essential tool for encoding and CS education.
Case Converter — free online tool, no sign-up
Convert text between upper, lower, title, camelCase, snake_case, and kebab-case — one-click text transformation.
Diff Checker — free online tool, no sign-up
Compare two blocks of text and highlight additions and removals — visualize code and content changes using AI.
Free Books Library — free online tool, no sign-up
Browse free public-domain and open-access books for online reading — classic literature and educational texts.
Leet Speak Converter — free online tool, no sign-up
Turn text into 1337-style writing with adjustable intensity — fun text transformer for usernames and memes.
Lorem Ipsum Generator — free online tool, no sign-up
Generate placeholder text in paragraphs, sentences, or words — perfect for mockups and UI design prototyping.
Morse Code Converter — free online tool, no sign-up
Encode text as Morse code and decode Morse back into text — includes audio playback support.
Nonsense Word Generator — free online tool, no sign-up
Generate playful made-up words for naming, brainstorming, and creative projects — powered by pattern AI.
Palindrome Checker — free online tool, no sign-up
Check whether a word or phrase reads the same backwards — supports ignore-case and ignore-space modes.
PDF to Word Converter — free online tool, no sign-up
Extract text from PDF and convert it into an editable Word document — free browser-based PDF converter.
Random Text Generator — free online tool, no sign-up
Generate placeholder copy in multiple lengths and writing tones — more expressive than lorem ipsum using AI.
Regex Tester — free online tool, no sign-up
Test regular expressions with live match highlighting — debug patterns instantly with flags, groups, and capture support.
Text Reverser — free online tool, no sign-up
Reverse text by characters, words, or full line order — flip strings and phrases instantly.
Text to PDF Converter — free online tool, no sign-up
Convert plain text to formatted PDF documents with customizable page size — free, no software required.
Text to Word Converter — free online tool, no sign-up
Generate Word documents (.docx) from plain text instantly — download ready-to-share documents in seconds.
Typing Speed Test — free online tool, no sign-up
Test typing speed, WPM accuracy, and consistency — practice and improve typing with real-time stats.
Unicode Converter — free online tool, no sign-up
Encode and decode unicode escape sequences and code points — inspect and convert special characters.
Word & Character Counter — free online tool, no sign-up
Count words, characters, sentences, and estimate reading time — with keyword density analysis using AI.
Word Cloud Generator — free online tool, no sign-up
Create a visual SVG word cloud from any text input — great for content analysis, presentations, and data visualization.
Word to PDF Converter — free online tool, no sign-up
Convert Word documents to PDF format instantly in your browser — no Microsoft Office or plugins needed.
Free Image Tools Tools
Crop, compress, resize, convert, watermark, and remove backgrounds — client-side, no uploads to servers.
2D to 3D Image Effect — free online tool, no sign-up
Apply depth-style 3D transformations to flat images — browser-based 3D photo effect generator using AI.
Background Remover — free online tool, no sign-up
Remove image backgrounds in the browser with color picking, flood fill, and edge-aware controls — client-side, no upload.
Change Background — free online tool, no sign-up
Replace image backgrounds with a solid color, gradient, or uploaded image — browser-based compositing using AI.
Color Picker — free online tool, no sign-up
Pick colors and convert between HEX, RGB, and HSL formats — with live preview and clipboard copy.
EXIF GPS Remover — free online tool, no sign-up
Check image metadata for location, device, and timestamp details, then strip the fields you do not want to share. It is especially useful for press kits, listings, and personal photos shared publicly.
Favicon Generator — free online tool, no sign-up
Generate multi-size favicon assets from an uploaded source image — download ICO, PNG, and Apple touch icon formats.
Free AI Image Generator — free online tool, no sign-up
Create images from text prompts using a free AI model — generate visuals for any idea without cost.
Image Batch Converter — free online tool, no sign-up
Convert multiple images to JPG, PNG, or WebP and download them together — bulk image format conversion.
Image Compressor — free online tool, no sign-up
Compress and optimize images with adjustable quality and live preview — reduce file size for faster web performance.
Image Converter — free online tool, no sign-up
Convert images between JPG, PNG, WebP, ICO, and AVIF formats instantly in your browser — no upload required.
Image Cropper — free online tool, no sign-up
Crop images with common aspect ratios and download the result — precise browser-based image cropping tool.
Image Flipper — free online tool, no sign-up
Flip images horizontally or vertically and export the result — mirror photos instantly in your browser.
Image Metadata Viewer — free online tool, no sign-up
Read EXIF and basic image metadata from uploaded files — inspect camera settings, GPS, and creation dates.
Image Repair Tool — free online tool, no sign-up
Restore damaged or corrupted images and improve visual clarity — browser-based image recovery using AI.
Image Resizer — free online tool, no sign-up
Resize images to preset or custom dimensions — social media presets, pixel-perfect, and percentage-based scaling.
Image Rotator — free online tool, no sign-up
Rotate images by presets or custom angles in the browser — fix sideways photos instantly.
Image to Base64 — free online tool, no sign-up
Convert images to Base64-encoded data URIs with instant preview — embed images inline in CSS or HTML.
Image Watermarker — free online tool, no sign-up
Add a text or logo watermark to images with full positioning controls — protect photos using AI.
Old Photo Restorer — free online tool, no sign-up
Improve aging and degraded photos with restoration controls — enhance old family photos using AI.
Pseudo 3D Image Effects — free online tool, no sign-up
Generate layered pseudo-3D image looks from flat source visuals — creative image depth effect using AI.
Random Image Generator — free online tool, no sign-up
Discover and export random images through a lightweight browser discovery workflow — visual inspiration tool.
Remove Background — free online tool, no sign-up
Remove studio-style backgrounds from images and export a transparent PNG — client-side background eraser using AI.
Resize Image — free online tool, no sign-up
Resize images to exact pixels, percentages, or social media presets while preserving aspect ratio — using AI.
Screenshot Capture — free online tool, no sign-up
Capture a styled preview card as an image with html2canvas — export UI previews without browser extensions.
SVG Editor — free online tool, no sign-up
Build simple SVG graphics with shapes, labels, and export-ready markup — browser-based SVG design tool.
Free Design & UI Tools
Build gradients, box shadows, animations, filters, spacing scales, and CSS snippets with live previews.
Aspect Ratio Layout Calculator — free online tool, no sign-up
Calculate reduced ratios, responsive CSS padding tricks, and layout dimensions from any frame size.
Border Radius Generator — free online tool, no sign-up
Generate CSS border-radius values for custom rounded shapes — visual editor with live preview and copy.
Box Shadow Generator — free online tool, no sign-up
Create CSS box shadows visually with offset, blur, spread, and color controls — copy production-ready code.
CSS Filter Generator — free online tool, no sign-up
Adjust blur, brightness, contrast, hue-rotate, and saturation with live CSS filter output — instant visual preview.
CSS Gradient Generator — free online tool, no sign-up
Create linear and radial gradients with multiple color stops — copy ready-to-use CSS background-image code.
CSS Grid Template Generator — free online tool, no sign-up
Build responsive CSS Grid layouts visually with named areas, repeat helpers, and breakpoint previews. Designers and frontend teams can test layouts quickly before writing production CSS.
CSS Keyframes Animator — free online tool, no sign-up
Generate CSS @keyframes animations with timing controls and live preview — create animations using AI.
CSS Transform Generator — free online tool, no sign-up
Create translate, scale, rotate, and skew transform CSS snippets visually — live preview and copy.
Spacing Scale Generator — free online tool, no sign-up
Generate modular spacing scales for UI design systems from a base size and ratio — design tokens using AI.
SVG Path Editor — free online tool, no sign-up
Compose and inspect SVG path commands visually — build custom shapes for logos and icons using AI.
SVG Sprite Sheet Generator — free online tool, no sign-up
Combine multiple SVG icons into one optimized sprite sheet with symbol IDs, previews, and usage snippets. It makes icon systems easier to manage while keeping assets private and local.
Text Shadow Generator — free online tool, no sign-up
Generate CSS text-shadow values with a live headline preview — copy production-ready shadow code.
Free SEO & Web Tools
Generate meta tags, inspect page data, check links, preview SERPs, and audit content for search visibility.
Broken Link Checker — free online tool, no sign-up
Check a list of URLs and mark timeout or fetch failures — find and fix 404 errors on your website.
Canonical Tag Generator — free online tool, no sign-up
Create canonical link tags for pages, product variants, and paginated URLs — prevent duplicate content issues.
DNS Lookup — free online tool, no sign-up
Look up DNS records (A, MX, TXT, NS, CNAME) for any domain — check propagation and diagnose email issues.
Hreflang Tag Generator — free online tool, no sign-up
Generate hreflang link tags for multilingual and multi-region sites — correct international SEO targeting.
Internal Link Graph Visualizer — free online tool, no sign-up
Turn pasted URL and link-export data into a visual internal-link graph to spot orphaned pages, weak clusters, and overlinked nodes. It helps SEO teams plan site structure without sending crawl exports to an outside tool.
IP Address Lookup — free online tool, no sign-up
Find your IP address, geolocation, ISP, and country — what is my IP made simple with instant results.
Keyword Density Checker — free online tool, no sign-up
Analyze repeated phrases and top keywords inside any text block — optimize content for search rankings using AI.
Meta Description Length Checker — free online tool, no sign-up
Review meta descriptions for character length and snippet-friendly ranges — bulk SEO meta audit tool.
Meta Tags Generator — free online tool, no sign-up
Generate SEO-friendly meta tags including Open Graph, Twitter Card, and canonical tags — built with AI optimization.
Open Graph Preview Tool — free online tool, no sign-up
Preview how Open Graph titles, descriptions, and images appear when shared on social media — OG tag tester.
Page Speed Insights Simulator — free online tool, no sign-up
Estimate performance bottlenecks and Core Web Vitals from page metrics — lightweight Lighthouse simulator.
QR Code Reader — free online tool, no sign-up
Read and decode QR codes from uploaded images — extract URLs, text, and WiFi data instantly in your browser.
Readability Score Calculator — free online tool, no sign-up
Estimate Flesch-Kincaid readability and sentence complexity from text — optimize content grade level using AI.
Redirect Chain Mapper — free online tool, no sign-up
Visualize redirect chains from pasted crawl exports, response logs, or manually entered hops so teams can trim unnecessary redirects. This is useful during migrations, replatforms, and large-scale URL cleanup projects.
Robots.txt Generator — free online tool, no sign-up
Create robots.txt files for your website — control search engine crawlers, disallow paths, and set sitemaps.
Schema Markup Builder & Validator — free online tool, no sign-up
Generate valid JSON-LD for articles, organizations, products, FAQs, and local businesses with instant preview and rule checks. It helps SEO teams ship structured data faster without copy-pasting uncertain snippets.
SEO Meta Tag Extractor — free online tool, no sign-up
Inspect pasted HTML for title, description, canonical, and social tags — audit any page's SEO meta structure.
SERP Snippet Preview — free online tool, no sign-up
Preview title tags, URLs, and meta descriptions in a Google-style search result layout — SEO snippet tool.
Sitemap Generator — free online tool, no sign-up
Generate XML sitemaps from a list of URLs — set priorities, change frequencies, and download instantly.
Sitemap Priority Planner — free online tool, no sign-up
Assign sitemap priorities and change frequencies to a URL inventory — generate XML sitemap attributes.
Slug Optimizer — free online tool, no sign-up
Turn page titles into clean, readable, SEO-friendly URL slugs — remove stop words and special characters.
SSL Checker — free online tool, no sign-up
Check SSL certificate validity, expiry, and HTTPS status for any domain — essential web security audit tool.
Twitter Card Validator — free online tool, no sign-up
Validate Twitter Card meta tags and preview card-style output — test X/Twitter link sharing appearance.
User Agent Parser — free online tool, no sign-up
Parse browser, operating system, and device details from user agent strings — useful for analytics debugging.
UTM Campaign Builder & Validator — free online tool, no sign-up
Create consistent UTM URLs, validate naming conventions, and catch messy campaign tagging before links go live. It helps marketing teams keep analytics cleaner across channels and stakeholders.
Website Color Palette Extractor — free online tool, no sign-up
Extract a color palette from pasted CSS or HTML color values — build brand color systems using AI.
Free Calculators & Converters Tools
Everyday calculators for finance, health, dates, units, fuel, electricity, and quick conversions.
Age Calculator — free online tool, no sign-up
Calculate exact age from a birth date with years, months, and days — find how many days until your birthday.
BMI Calculator — free online tool, no sign-up
Calculate body mass index from weight and height — includes BMI category classification and health guidance.
Compound Interest Calculator — free online tool, no sign-up
Estimate future value and earned interest with annual compound growth — investment and savings planning tool.
Currency Converter — free online tool, no sign-up
Convert currencies with live exchange rates plus offline fallback — support for 150+ world currencies.
Date Difference Calculator — free online tool, no sign-up
Measure the exact duration between two dates and times — calculate days, weeks, months, and hours between dates.
Discount Calculator — free online tool, no sign-up
Work out discount savings and final price after percentage reductions — calculate sale prices instantly.
Electricity Cost Calculator — free online tool, no sign-up
Estimate monthly electricity cost from wattage, daily runtime, and energy price — reduce your power bill.
Fuel Cost Calculator — free online tool, no sign-up
Estimate fuel needed and trip cost from distance, efficiency, and fuel price — plan road trips easily.
GPA Calculator — free online tool, no sign-up
Estimate GPA from course grades and credit hours — supports 4.0 and weighted grading systems.
Loan Calculator — free online tool, no sign-up
Estimate monthly EMI payments, total interest cost, and full repayment schedule for any loan.
Margin Calculator — free online tool, no sign-up
Estimate gross margin percentage and net profit from selling price and cost — essential for pricing decisions.
Markup Calculator — free online tool, no sign-up
Calculate selling price and profit from cost and markup percentage — retail pricing made simple.
Pace Calculator — free online tool, no sign-up
Calculate running pace per kilometer and average speed from distance and total time — runner's must-have tool.
Percentage Calculator — free online tool, no sign-up
Solve common percentage calculations instantly — what is X% of Y, percentage change, and reverse percent.
Percentage Change Calculator — free online tool, no sign-up
Measure percentage increase or decrease between two values — essential for financial and analytics reporting.
Roman Numeral Converter — free online tool, no sign-up
Convert numbers to Roman numerals and vice versa — supports I to MMMCMXCIX with instant conversion.
Speed Distance Time Calculator — free online tool, no sign-up
Calculate speed, distance, or time from any two known values — physics and travel planning formula tool.
Time Zone Converter — free online tool, no sign-up
Convert a date and time across major world time zones — plan meetings across countries instantly.
Tip Calculator — free online tool, no sign-up
Calculate tip amount, total bill, and per-person split in one step — the easiest restaurant tip calculator.
Unit Converter — free online tool, no sign-up
Convert between common units for length, weight, speed, and temperature — instant multi-unit calculator.
Free Random Generators Tools
Generate names, quotes, colors, passwords, avatars, addresses, and playful creative data instantly.
Coin Flip Simulator — free online tool, no sign-up
Flip a virtual coin and track heads-versus-tails results — random decision tool for games and choices.
Pronounceable Password Generator — free online tool, no sign-up
Generate strong but memorable password phrases built from pronounceable syllable chunks.
Random Address Generator — free online tool, no sign-up
Create plausible sample street addresses for demos, testing, and UI mockups.
Random Avatar Generator — free online tool, no sign-up
Create simple SVG identicon-style avatars from a seed — unique profile pictures for any user.
Random Color Generator — free online tool, no sign-up
Generate random HEX and RGB colors with instant swatches — discover new palette combinations.
Random Credit Card Generator — free online tool, no sign-up
Generate Luhn-valid test card numbers for sandbox payment environments — not for real transactions.
Random Emoji Generator — free online tool, no sign-up
Generate emoji mixes for reactions, bios, social posts, and fun prompts — randomize your expression.
Random Name Generator — free online tool, no sign-up
Generate first and last name combinations for mock data, fiction, and test environments.
Random Number Generator — free online tool, no sign-up
Generate integers or decimals within a custom range — fair random number picker for games and decisions.
Random Phone Number Generator — free online tool, no sign-up
Generate formatted sample phone numbers for test data, forms, and QA environments.
Random Quote Generator — free online tool, no sign-up
Pull inspirational, motivational, and practical quotes for content, presentations, and daily reflection.
Free Audio & Media Tools
Record, visualize, enhance, convert, and synthesize sound with AI-powered and browser-native audio tools.
AI Audio Enhancer & Vocal Remover — free online tool, no sign-up
Remove background noise from recordings or separate vocals from music — AI-powered audio processing with waveform visualizer.
AI Text to Audio Generator — free online tool, no sign-up
Convert text to natural-sounding speech instantly in your browser — multi-voice, pitch control, frequency visualizer, using AI.
Audio Converter — free online tool, no sign-up
Convert audio files between popular formats in a browser-based workspace — MP3, WAV, OGG conversion using AI.
Audio Recorder — free online tool, no sign-up
Record microphone input and download the captured audio — browser-based voice recorder, no software needed.
Audio Waveform Visualizer — free online tool, no sign-up
Load an audio file and inspect its waveform in the browser — visualize audio frequency using AI-powered canvas rendering.
Beat Interval Calculator — free online tool, no sign-up
Convert BPM into beat, bar, and loop timing intervals in milliseconds — essential DJ and producer tool.
BPM Tap Tempo & Delay Time Calculator — free online tool, no sign-up
Tap a tempo or enter BPM to calculate note divisions, delay times, and loop-friendly timing values. It helps producers and musicians line up effects and timing without a DAW plugin.
Frequency to Note Converter — free online tool, no sign-up
Convert audio frequencies (Hz) to the nearest musical note and cents offset — music theory tool.
Metronome — free online tool, no sign-up
Practice with a browser-based metronome with adjustable BPM and beat accents — free for musicians.
Tone Generator — free online tool, no sign-up
Generate sine, square, triangle, and sawtooth tones in the browser — audio frequency test tool.
Video to Audio Converter — free online tool, no sign-up
Extract audio tracks from video files and export them in browser-compatible formats — MP4 to MP3 using AI.
White Noise Generator — free online tool, no sign-up
Generate looping white, pink, and brown noise textures for focus, sleep, and study sessions.
Free File Tools Tools
Inspect, split, merge, archive, sanitize, encode, and checksum files — all locally without server uploads.
Base64 File Encoder — free online tool, no sign-up
Encode uploaded files to Base64 strings in the browser — convert any file to an inline data URI.
Checksum Calculator — free online tool, no sign-up
Calculate CRC32, MD5, and SHA-256 checksums for uploaded files — verify file integrity instantly.
File Merger — free online tool, no sign-up
Merge multiple text files into one combined output with separators — concatenate files in seconds.
File Splitter — free online tool, no sign-up
Split text files by line count or approximate chunk size — prepare large files for processing.
Filename Sanitizer — free online tool, no sign-up
Normalize messy file names for safer downloads, uploads, and archives — remove illegal characters instantly.
Line Ending Converter — free online tool, no sign-up
Convert text between LF (Unix) and CRLF (Windows) line endings — fix cross-platform editor issues.
MIME Type Detector — free online tool, no sign-up
Inspect uploaded files for MIME type, extension, and file signature hints — identify unknown files instantly.
PDF Annotator — free online tool, no sign-up
Open a PDF editing workflow for quick markup, notes, and in-browser annotations — free PDF annotator.
PDF Editor — free online tool, no sign-up
Edit, annotate, and fill PDF files in the browser — no Adobe Acrobat needed, using AI-powered workflow.
PDF Metadata Privacy Checker — free online tool, no sign-up
Inspect PDF author, title, subject, timestamps, and hidden metadata before sharing files. It helps teams remove accidental identifiers from proposals, resumes, and reports without sending documents to a server.
ZIP File Compressor — free online tool, no sign-up
Bundle multiple files into a downloadable ZIP archive locally — no server upload, fully private.
Free Accessibility Tools
Audit color contrast, ARIA labels, heading structure, and focus order to improve keyboard and screen-reader support.
Accessibility Focus Order Visualizer — free online tool, no sign-up
Map keyboard tab order, skip-link flow, and focus traps from pasted HTML so teams can catch navigation issues before shipping. The visual overlay makes a11y reviews faster for product, QA, and frontend teams.
Alt Text Length Checker — free online tool, no sign-up
Review image alt text for length, clarity, duplication, and decorative-image handling. It helps content teams write accessible image descriptions without relying on AI or third-party APIs.
ARIA Label Reviewer — free online tool, no sign-up
Review interactive elements for missing accessible names and weak ARIA labeling — screen reader audit.
Color Contrast Checker — free online tool, no sign-up
Check foreground and background color contrast against WCAG AA and AAA thresholds — accessibility audit tool.
Focusable Elements Checker — free online tool, no sign-up
List focusable controls, tabindex order, and skip-link coverage from pasted markup — keyboard navigation audit.
Heading Structure Outline — free online tool, no sign-up
Audit pasted HTML for heading order, skipped levels, and document outline clarity — accessibility and SEO check.
Free Data & Analytics Tools
Profile CSV exports, chart data, test network speed, and inspect logs and structured data without uploading files.
Chart Generator — free online tool, no sign-up
Turn pasted CSV, JSON, or plain text into configurable charts and downloadable reports — data visualization using AI.
CSV Column Profiler — free online tool, no sign-up
Profile CSV headers, fill rates, and likely column data types from pasted data — data quality analysis.
Data Size Estimator — free online tool, no sign-up
Estimate dataset storage growth from row counts and average row sizes — database capacity planning tool.
HAR File Viewer & API Timeline Analyzer — free online tool, no sign-up
Open HAR exports locally and turn them into a sortable timeline for slow requests, waterfalls, headers, and payload sizes. It helps engineering and QA teams diagnose frontend performance without uploading logs.
Ping Test Tool — free online tool, no sign-up
Test round-trip request latency to a public URL with browser-safe fetch timing — check server response time.
WiFi Speed Test — free online tool, no sign-up
Measure download speed, upload speed, latency, and connection quality with browser-native benchmarks.
Free Financial & Business Tools
Model pricing, margin, billing, break-even, MRR, and subscription growth with privacy-first calculators.
Break-Even Calculator — free online tool, no sign-up
Calculate break-even units, target revenue, and contribution margin with interactive charts and scenario sliders. It gives founders, operators, and consultants a fast way to test pricing and cost assumptions privately.
Invoice Due Date & Late Fee Calculator — free online tool, no sign-up
Calculate due dates, grace periods, and simple late-fee scenarios for invoices across common billing terms. It helps freelancers and small businesses stay organized without relying on online accounting portals.
Pricing Markup Calculator — free online tool, no sign-up
Turn unit cost and target markup percentage into a selling price and gross margin estimate — retail pricing tool.
Profit Margin Calculator — free online tool, no sign-up
Calculate profit, markup, and gross margin from revenue and cost inputs — quick business profitability tool.
SaaS Pricing Margin Calculator — free online tool, no sign-up
Model SaaS pricing tiers, gross margin, payback period, and annual recurring revenue from your own assumptions. It helps operators and growth teams reason about pricing without handing numbers to external calculators.
Sales Tax Calculator — free online tool, no sign-up
Calculate tax-inclusive totals and tax amounts from any subtotal and rate — invoice and retail pricing tool.
Subscription Revenue Forecast — free online tool, no sign-up
Project customer growth, churn, MRR, and ARR from SaaS revenue assumptions — startup financial model.
Free Engineering & Technical Tools
Solve electrical and technical calculations — voltage dividers, RC circuits, LED resistors, and battery runtimes.
Capacitor Charge/Discharge Calculator — free online tool, no sign-up
Estimate RC time constants and charge thresholds for timing circuits — capacitor electronics calculator.
LED Series Resistor Calculator — free online tool, no sign-up
Calculate a safe resistor value and power rating for single-LED circuits — beginner electronics tool.
Ohm’s Law & Power Triangle Calculator — free online tool, no sign-up
Calculate voltage, current, resistance, power, and related electrical values with unit switching and visual formulas. It is ideal for students, technicians, and makers who need quick checks with clear explanations.
Power Supply Runtime Calculator — free online tool, no sign-up
Estimate battery runtime from capacity (mAh) and expected load current — power electronics tool.
Resistor Color Code Calculator — free online tool, no sign-up
Decode resistor bands visually, calculate tolerance, and switch between 4-band, 5-band, and 6-band modes. It helps electronics learners and hobbyists avoid common reading mistakes.
Voltage Divider Calculator — free online tool, no sign-up
Calculate divided output voltage and resistor ratios for analog circuits — electronics engineering tool.
Free Education & Learning Tools
Visualize math concepts, build study plans, simplify fractions, and turn abstract topics into interactive practice.
Flashcard Randomizer — free online tool, no sign-up
Shuffle custom flashcard prompts for quick exam practice — spaced repetition study tool using AI.
Fraction Simplifier — free online tool, no sign-up
Reduce fractions to lowest terms and convert to decimals and percentages — math tool for students.
Scientific Notation Converter — free online tool, no sign-up
Convert numbers between expanded form and scientific notation — essential math and physics study tool.
Study Session Planner — free online tool, no sign-up
Build focused Pomodoro-style study blocks with short and long breaks — student productivity tool using AI.
Unit Circle Visualizer — free online tool, no sign-up
Explore angles, radians, coordinates, sine, cosine, and tangent with an interactive unit circle and labeled quadrants. It turns a memorization-heavy topic into a visual learning experience.
Free Astronomy & Space Tools
Explore moon phases, escape velocities, planet weights, and telescope optics with browser-based space calculators.
Escape Velocity Calculator — free online tool, no sign-up
Calculate escape velocity from planetary mass and radius — space physics and astronomy education tool.
Moon Phase Finder — free online tool, no sign-up
Estimate the moon phase and illumination percentage for any calendar date — amateur astronomy tool.
Planet Weight Calculator — free online tool, no sign-up
Compare your Earth weight against gravity on all planets and the moon — space education tool using AI.
Telescope Field of View Calculator — free online tool, no sign-up
Estimate telescope magnification, true field of view, and exit pupil using aperture, focal length, and eyepiece data. It helps astronomy hobbyists compare setups before a night of observing.
Telescope Magnification Comparator — free online tool, no sign-up
Compare eyepiece magnification and field-of-view tradeoffs for any telescope setup — astronomy optics tool.
Standalone HTML & embeddable workspaces
26 standalone HTML pages that work directly in the browser or can be embedded on any site via a plain <iframe> | no API key, no account.
2D to 3D Image Transformer – Add Depth Effects Online Free
Transform flat 2D images into 3D-inspired visuals by applying depth-style effects, parallax styling, and dimensional enhancements directly in your browser. No software required.
CSS Grid Generator – Visual Layout Builder & Code Exporter
Design CSS grid layouts visually with a drag-and-drop interface and instantly export clean, production-ready CSS code. Build responsive grid templates, define columns, rows, and gaps from a standalone browser page.
Fix & Restore Photos Online – Color Correction & Cleanup Tool
Repair old and damaged photos, correct colors, remove noise, and clean up imperfections in a browser-based image editor. Restore vintage photos and enhance image quality without any app download.
Free Background Remover – Remove Image Background Online
Remove image backgrounds and export transparent PNG results instantly in a focused browser-based app. Perfect for product photos, profile pictures, logos, and creative designs. No upload needed.
Free Books Library – Read & Browse Free eBooks Online
Browse, search, and read thousands of free eBooks and public domain books in a lightweight browser reader workspace. Access classic literature, educational texts, and open-access publications instantly.
Free Image Converter Online – Resize, Compress & Convert Images
Convert image formats (JPG, PNG, WEBP, GIF, BMP, SVG), resize images to custom dimensions, compress file sizes, and apply quick browser-based edits without uploading to any server.
Free Online Audio Converter & Editor – No Upload Required
Convert audio formats (MP3, WAV, OGG, FLAC, AAC), trim audio clips, adjust volume, and apply browser-based audio effects without uploading files to any server. Fast, private, and free.
Free Online Chart & Report Generator – Data Visualization Tool
Create bar charts, line graphs, pie charts, scatter plots, and report-style data visuals in a browser-only editor. Input your data, customize styles, and export chart images instantly.
Free Online Diagram & Flowchart Maker – Browser-Based Editor
Build professional flowcharts, UML-style diagrams, mind maps, and visual process maps inside a standalone browser canvas. No installation or login required. Export diagrams as images or SVG.
Free Online HTML Tools Hub – Browse All Browser-Based Tools
Explore the complete collection of free, standalone HTML tools for documents, images, audio, video, security, and developer utilities. Search, filter by category, and access any tool instantly without login or installation.
Free Online PDF Editor – Annotate, Sign & Review PDFs
Edit, annotate, highlight, sign, and review PDF documents directly in a standalone browser app. Add text, draw signatures, insert comments, and save changes without any software installation.
Free Online Typing Test – Measure WPM Speed & Accuracy
Practice touch typing, measure your words per minute (WPM), and track accuracy with a standalone browser typing test. Improve typing speed, reduce errors, and monitor your progress with detailed results.
Free QR Code Generator – Create QR Codes for URLs, WiFi & More
Create custom QR codes for URLs, website links, WiFi credentials, plain text, email addresses, phone numbers, and contact cards (vCard). Download high-resolution QR codes instantly in a standalone browser app.
Free UML Diagram Generator – Class, Sequence & Use-Case Editor
Create professional UML diagrams including class diagrams, sequence diagrams, use-case diagrams, and activity diagrams inside a standalone browser-based UML editor. Export diagrams as SVG or PNG.
Free Word to PDF Converter Online – Instant Browser Export
Convert Word-style documents (DOC, DOCX) into PDF files instantly in a browser-based workspace. No file upload needed. Preserve formatting, fonts, and layout. Download PDF immediately.
Internet Speed Test – Check Download, Upload Speed & Ping Online
Measure your internet connection speed including download speed, upload speed, ping, and latency from a browser-friendly network tester. Get accurate real-time results with no app installation required.
Legacy Photo Fixer & Image Enhancer – Restore & Repair Old Images
Use the original restore-and-enhance workflow for image repair, photo cleanup, and quality enhancement tasks. Apply filters, fix exposure, and recover detail from old or damaged photos.
PDF Editor Online – Fill, Sign & Annotate PDF Files Free
Edit, fill, annotate, and sign PDF documents with a focused browser workflow. Modify text, fill PDF forms, add digital signatures, and highlight content without downloading any software.
PDF to Word Converter Online – Free Editable Document Export
Convert PDF documents into editable Word-compatible output (DOCX) with a browser-first workflow. Extract text, preserve layout, and download the result without uploading files to a third-party server.
Pseudo-3D Image Effects Workspace – Depth Styling & Creative Filters
Add pseudo-3D styling, image depth effects, and creative dimensional filters to your photos in a standalone browser workflow. Enhance flat images with depth perception and artistic 3D styles.
Random Image Generator – Discover & Download Free Stock Images
Discover, browse, and fetch random high-quality images in a standalone browser-based image explorer. Find inspiration, placeholder images, and creative visuals with one click. Download instantly.
Secure Password Generator – Strong Random Passwords Free
Generate strong, secure, and random passwords with browser-based cryptographic randomness. Customize length, include symbols, numbers, and uppercase letters. Copy-ready output with no server storage.
Text Humanizer – Rewrite AI Text to Sound Natural & Human
Rewrite AI-generated text to sound more natural, human, and conversational with a browser-based editing workflow. Bypass AI detection, improve tone, clean up robotic phrasing, and polish content instantly.
Text to PDF Generator – Write & Export Formatted PDFs Online Free
Write and format rich text content and export it as a polished, professional PDF file from a browser-only editor. Select templates, apply headings, lists, and fonts, then download your PDF instantly.
Text to Word Document Creator – Free Online Doc Writer & Exporter
Draft, format, and export rich text content as a Word-compatible DOCX document from a standalone browser editor. Choose from document templates, apply formatting, and download instantly without login.
Video to Audio Converter – Extract Audio from Video Free Online
Extract and convert audio tracks from video files (MP4, AVI, MOV, MKV, WEBM) and export as MP3, WAV, or OGG from a standalone browser tool. No upload required. Fast, private, and free.
Why 219+ people use The Free AI Tools
Fast, private, and free | no accounts, no installs, no limits.
100 % private
Everything runs in your browser. No data ever leaves your device.
Instant results
Real-time output as you type | no server round-trips, no waiting.
Works everywhere
Chrome, Firefox, Safari, Edge. Mobile-ready. Offline once loaded.
Always free
No freemium limits, no credit card, no trial periods | ever.
For everyone
Developers, marketers, students, and everyday users | all welcome.
Share with a URL
Every tool has a permanent link. Bookmark or share | no login needed.
Frequently asked questions about The Free AI Tools
Everything you need to know about 219+ free browser-based tools.
Are all tools on The Free AI Tools free?
Yes. Every one of the 219+ tools is 100 % free | no sign-up, no subscription, no hidden fees, ever. We are supported by non-intrusive ads.
Do I need to create an account?
No. Every tool works instantly in your browser with zero registration. Just open the page and start.
Is my data safe?
Yes. All processing happens entirely in your browser using JavaScript. Your files, passwords, and text are never sent to any server, stored, or shared with third parties.
How many tools are available?
219+ free tools across 16 categories | SEO, text, image, developer, calculator, accessibility, finance, engineering, education, and more.
Do the tools work on mobile?
Yes. All tools are fully responsive and tested on iOS Safari and Android Chrome. The interface adapts to any screen size.
Do I need to install anything?
No installation, no download, no browser extension. Tools run directly in your web browser and most work offline once the page has loaded.
Can I embed tools on my website?
Yes. 26 standalone HTML workspaces are available. Drop an iframe pointing to the embed URL | no API key required.
Does The Free AI Tools collect or sell my data?
No. The Free AI Tools is 100 % client-side with zero backend data collection. We use Google Analytics for anonymous page-view statistics only.
Which browsers are supported?
All modern browsers: Chrome, Firefox, Safari, Edge, Brave. Tools also work offline once loaded.
Who are these tools built for?
Developers, SEO specialists, designers, marketers, students, and everyday users who need quick, private browser tools without creating an account.