DevTools Kit
Fast, privacy-friendly developer utilities — free to use and easy to share.
Quick Tools
Small utilities to help with everyday text and dev tasks. Optimized for speed, SEO and accessibility.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 instantly in your browser.
Case Converter
Convert text to UPPERCASE, lowercase, camelCase, snake_case, kebab-case and more.
Color Converter
Convert colors between HEX, RGB and HSL instantly.
Hash Generator
Generate MD5, SHA1 and SHA256 hashes instantly in your browser.
HTML Encoder / Decoder
Encode and decode HTML entities instantly in your browser.
JSON Formatter / Validator
Format, validate and minify JSON instantly in your browser.
JSON to CSV Converter
Convert JSON arrays of objects to CSV format instantly.
JSON to XML Converter
Convert JSON data to XML format instantly.
JWT Decoder
Decode JWT tokens and inspect header and payload instantly.
Password Generator
Generate secure random passwords instantly with custom options.
Random Number Generator
Generate random numbers instantly within a custom range.
Random String Generator
Generate random strings instantly for testing, tokens, or IDs.
Regex Tester
Test regular expressions and see matches highlighted instantly.
Remove Duplicate Lines
Remove duplicate lines from text instantly in your browser.
Text Diff Checker
Compare two blocks of text and highlight differences instantly.
Text Sorter
Sort lines of text alphabetically or by length instantly in your browser.
Timestamp Converter
Convert Unix timestamps to dates and vice versa instantly.
URL Encoder / Decoder
Encode and decode URLs instantly in your browser.
UUID Generator
Generate UUID v4 identifiers instantly for development and testing.
Word Counter
Count words, characters, lines and paragraphs instantly.
We are always adding new utilities to make your daily tasks even easier. Stay tuned for more features and updates!
Why use our tools
- Fast, client-side tools — nothing leaves your browser.
- Accessible and mobile-first designs.
- SEO-friendly pages for organic discovery.
SEO content
DevTools Kit provides a growing collection of free online tools for developers and writers. Each tool focuses on performance, clarity, and accessibility so users can quickly complete small tasks like counting words, converting values, or cleaning text.
FAQ
- Are these tools free?
- Yes — all core tools are free to use.
- Do you collect my data?
- No. Tools are primarily client-side and do not send your text to a server.