All Developer Tools
Code smarter, debug faster, and generate cleaner output — all right in your browser with ToolzyLab’s free client-side developer utilities.
💻 Code Formatter & Minifier Tools
HTML Beautifier
Format and clean messy HTML code instantly.
CSS Beautifier
Indent and reformat CSS or SCSS files for better readability.
JavaScript Beautifier
Auto-indent and prettify any JavaScript or JSON code.
HTML Minifier
Minify and optimize HTML code for web performance.
CSS Minifier
Compress CSS stylesheets while maintaining valid syntax.
JavaScript Minifier
Reduce JS file size and remove comments locally using Terser.
JSON Formatter & Validator
Beautify, validate, and fix broken JSON structures instantly.
XML Beautifier
Pretty-print XML or HTML with correct indentation.
🧠 Developer Utility & Debugging Tools
Regex Tester
Test and debug regular expressions with instant match highlights.
JSON Diff Checker
Compare two JSON files and highlight the differences visually.
Code Diff Viewer
Compare two code snippets side by side with color highlights.
HTTP Header Viewer
Analyze response headers from any public URL request.
URL Parser & Analyzer
Decompose URLs into protocol, domain, path, and query parts.
Base64 Decoder
Decode any Base64 string or file locally.
JWT Token Decoder
Decode and inspect JSON Web Tokens offline securely.
Hash Generator
Generate MD5, SHA1, or SHA256 hashes instantly.
API Response Viewer
Send test API requests and view formatted JSON responses.
Color Code Converter
Convert HEX ↔ RGB ↔ HSL codes easily.
🧩 Code Generator & Encoder Tools
HTML Entity Encoder / Decoder
Convert special characters to and from HTML entities.
URL Encoder / Decoder
Encode or decode URL-safe strings with one click.
Base64 Encoder
Convert text, JSON, or files to Base64 format easily.
UUID Generator
Generate unique UUID v4 identifiers securely in-browser.
JSON ↔ CSV Converter
Transform JSON objects into CSV or vice versa instantly.
HTML Table Generator
Create clean HTML tables from JSON or CSV data.
CSS Gradient Generator
Design and preview linear or radial gradients visually.
JSON ↔ YAML Converter
Switch between JSON and YAML file formats seamlessly.
Data URI Generator
Embed images or files directly into HTML or CSS as Base64 URIs.
HTML ↔ Markdown Converter
Convert between Markdown and HTML for content creation.