URL Encode/Decode
Encode and decode URLs with percent-encoding support — fix broken query strings and API parameters instantly.
Developer Tools27 live toolsClient-side first
Developer Tools tools
Format code, validate data structures, convert formats, and debug developer input — all browser-native.
Browse the live tools below to compare workflows, then jump into related utilities through the category hub without losing context.
JSON Formatter & Validator
Format, validate, and minify JSON with error highlighting — instantly beautify messy JSON responses.
HTML/XML Escape
Convert special characters to and from HTML entities — prevent XSS and fix broken markup instantly.
CSS Minifier/Formatter
Minify or beautify CSS code for production optimization or readable development — instant browser-side processing.
JavaScript Minifier/Formatter
Minify or beautify JavaScript code for production builds or debugging — reduce JS bundle size instantly.
SQL Formatter
Format and beautify SQL queries for better readability — clean up messy SELECT statements and JOIN chains.
YAML to JSON Converter
Convert between YAML and JSON formats instantly — essential for CI/CD, Kubernetes, and API config workflows.
CSV to JSON Converter
Convert CSV data to JSON and vice versa with ease — perfect for data import/export and API payload preparation.
UUID Generator
Generate UUIDs (v4) in bulk with instant copy and export — unique identifiers for databases and APIs.
Markdown to HTML Converter
Render markdown into clean sanitized HTML with a live preview — convert .md files to web-ready markup.
HTML to Markdown Converter
Convert raw HTML into clean readable markdown syntax — useful for blog migration and content portability.
XML Formatter & Validator
Pretty-print XML and flag malformed markup in your browser — format RSS, SOAP, and config XML files.
JSON to XML Converter
Transform JSON objects into formatted XML markup — convert API payloads to XML for SOAP and legacy integrations.
SQL to JSON Converter
Turn SQL INSERT statements into JSON data structures — useful for data migration and API payload generation.
Pretty Log Formatter
Clean up JSON logs, key-value lines, and stack traces for readability — debug server logs instantly.
Base64 Image Encoder
Convert uploaded images directly into Base64 strings — embed images inline in emails, HTML, or CSS.
Data URI Generator
Generate inline data URIs from uploaded files and text assets — eliminate external HTTP requests for small assets.
Environment Variables Parser
Parse .env file content into structured JSON and key/value tables — debug dotenv configs instantly.
Cron Expression Parser
Validate cron schedules and preview upcoming run times — debug cron jobs and scheduled task expressions.
Class Diagram Maker
Draft Mermaid-compatible UML class diagrams with a browser-based editor — visualize OOP architecture using AI.
ER Diagram Maker
Create entity-relationship diagrams with schema notes and Mermaid output — design database schemas using AI.
Flowchart Maker
Build process diagrams and flowcharts from Mermaid-style syntax — visualize workflows and logic using AI.
Sequence Diagram Maker
Visualize API and system interactions with Mermaid-compatible sequence diagrams — document microservices using AI.
Query String Parser
Parse URLs and query strings into readable key-value parameters — debug API requests and redirects instantly.
Regex Escape Helper
Escape plain text safely for regular-expression literals — convert strings to regex-safe patterns.
JSON Path Finder
Search nested JSON objects and return matching paths for keys and values — JSONPath query tool.
JSON Schema Builder & Validator
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.