The Developer Toolbox
You'll Actually Use
20 free browser-based utilities for developers. No sign-up, no data collection, 100% processing happens on your local device.
JSON Formatter & Validator
Format, beautify, and validate JSON data instantly.
Base64 Encoder / Decoder
Encode and decode Base64 strings with ease.
URL Encoder / Decoder
Percent-encode or decode query strings and full URLs.
HTML Entities Encoder / Decoder
Escape HTML characters or restore original text.
Markdown Previewer
Write Markdown and preview the rendered HTML live.
JWT Decoder
Decode JSON Web Tokens and inspect header and payload details.
UUID Generator
Generate random cryptographically secure UUID v4 values.
Password Generator
Create strong, customizable, and cryptographically secure passwords.
Lorem Ipsum Generator
Generate dummy paragraphs, sentences, or words for layout design.
Word Counter
Count words, characters, sentences, paragraphs and reading time.
Case Converter
Convert text to camelCase, snake_case, UPPERCASE, lowercase, and more.
Diff Checker
Compare two blocks of text and see line-by-line differences.
Regex Tester
Write regular expressions and test matches against sample text.
Color Converter
Convert colors between HEX, RGB, and HSL formats.
Unix Timestamp Converter
Convert epoch timestamps to readable dates and vice-versa.
Number Base Converter
Convert numbers between binary, octal, decimal, and hex bases.
CSV to JSON Converter
Convert CSV tables to JSON arrays and vice-versa.
Hash Generator
Generate cryptographic MD5, SHA-1, SHA-256, and SHA-512 hashes.
HTML Formatter & Minifier
Beautify messy HTML code or minify it for production.
CSS Minifier
Compress and minify CSS code to optimize load times.