Developer Tools
Free, lightweight developer tools that run entirely in your browser. Format JSON, minify code, encode data, and more—perfect for quick debugging and development tasks without installing heavy IDEs or plugins.
Available Developer Tools
JSON Formatter
Format and beautify JSON
JSON Validator
Validate JSON data
HTML Minifier
Minify HTML files
CSS Minifier
Minify CSS files
JS Minifier
Minify JavaScript files
Base64 Encoder/Decoder
Encode/decode Base64
URL Encoder/Decoder
Encode/decode URLs
UUID Generator
Generate UUIDs
Markdown to HTML
Parse Markdown into clean HTML
HTML Entity Encoder/Decoder
Convert characters to HTML entities
JWT Decoder
Decode and inspect JSON Web Tokens locally
SQL Formatter
Beautify, format, and minify SQL queries client-side
CSS Clamp Generator
Generate fluid typographic clamp formulas responsive to viewports
CSV to JSON Converter
Convert tabular CSV data files into clean JSON objects
Text Diff Checker
Compare two blocks of text or code side-by-side to highlight differences
Regex Tester
Test regular expressions with live highlights and match groups
JSON to CSV Converter
Convert structured JSON arrays or objects into flat CSV formats
SHA256 Hash Generator
Generate cryptographic SHA-256 and other secure hashes client-side
CSS Box Shadow Generator
Interactively build and preview custom CSS box shadows
HEX Color Picker
Visual color selector, multi-format converter, and cohesive palette builder
CSS Gradient Generator
Design linear, radial, and conic CSS gradients with multiple color stops
Cron Expression Parser
Decode complex cron pattern schedule strings into plain English sentences
Color Contrast Checker
Validate color accessibility contrast ratios under WCAG 2.1 standard rules
HTML Table Generator
Visually construct responsive tables and export HTML and Markdown files
JWT Generator
Generate test JSON Web Tokens (JWT) client-side for sandbox API testing
CSS Border Radius Generator
Visually design circular corners and fancy 8-point CSS border-radiuses
Text to ASCII Converter
Convert plaintext to ASCII codes, binary, hexadecimal, and stylized art banners
Unix Timestamp Generator
Live ticking Unix epoch clock with calendar date offsets and Discord relative tags
JSON to YAML Converter
Convert JSON to YAML or YAML to JSON instantly with nested objects and arrays
User Agent Parser
Parse and analyze browser, OS, device type, and engine from any User Agent string
URL Parser & Query String Editor
Break URLs into components and edit query parameters interactively in real-time
Why Browser-Based Tools?
As a developer, you often need quick utilities to handle small tasks—formatting messy JSON, minifying a CSS file, or generating a unique ID. Our browser‑based tools let you do these things instantly, without switching contexts or installing anything.
All processing happens locally on your machine using JavaScript, so your code and data never leave your browser—perfect for sensitive information.
Common Use Cases
- Debugging API responses by formatting JSON
- Preparing assets for production by minifying HTML, CSS, and JS
- Encoding data for URLs or API requests
- Generating test data like UUIDs and passwords
Tips for Better Development Workflow
- Keep tools handy — bookmark your frequently used tools for quick access
- Minify early — always minify your production assets to improve load times
- Validate often — validate JSON and other data formats before using them in your code
- Use UUIDs — prefer UUIDs over sequential IDs for public-facing resources
Performance Matters
Minifying your code isn't just about smaller file sizes—it also improves parsing and execution speed in browsers, leading to better Core Web Vitals and user experience.
Our tools are built with performance in mind too—they load instantly and use minimal resources.