Developer Tools
That Just Work
A collection of 74 fast, free, and privacy-first developer tools. Format JSON, compare diffs, generate tokens, convert colors, decode JWTs, and more — all running entirely in your browser.
Lightning Fast
All tools run client-side with zero network latency. Instant results every time.
Data Security
All calculations are performed locally. Your inputs, code, and configurations never leave your browser.
Developer Focused
74 tools built by developers, for developers. Clean UI, copy buttons, and clear error messages.
All 74 Tools
Data
(5)JSON Tools
→Format, validate, diff, and query JSON
[Data]YAML Tools - Convert & Format YAML/JSON
→Convert YAML to JSON format
[Data]CSV Tools - Convert & View CSV/JSON Data
→Convert CSV data to JSON format
[Data]XML Formatter / Validator
→Format and beautify XML documents
[Data]TOML to JSON Converter
→Convert between TOML and JSON
[Data]Encoding
(11)Base64 Encode / Decode
→Encode and decode Base64 strings
[Encoding]URL Encode / Decode
→Encode and decode URL strings
[Encoding]HTML Encode / Decode
→Encode and decode HTML entities
[Encoding]Unicode Escape / Unescape
→Escape and unescape Unicode sequences
[Encoding]Hex Encode / Decode
→Encode and decode hexadecimal strings
[Encoding]ROT13 Encoder / Decoder
→ROT13 letter rotation cipher
[Encoding]Punycode Converter
→Convert between IDN and Punycode
[Encoding]Morse Code Translator
→Translate between text and Morse code
[Encoding]Ascii85 / Base85 Encoder
→Encode and decode Ascii85 / Base85
[Encoding]String Escape / Unescape
→Escape strings for different languages
[Encoding]Base64 ↔ Image Converter
→Convert between Base64 and images
[Encoding]Text
(10)Regex Tester
→Test and debug regular expressions in real-time
[Text]Markdown Tools - Preview & Convert MD/HTML
→Live Markdown editor with real-time preview
[Text]Slug Generator
→Convert text to URL-friendly slugs
[Text]Text Diff Checker
→Compare two texts and highlight differences
[Text]Line Tools - Sort, Deduplicate & Number Lines
→Sort text lines in various orders
[Text]Text Analyzer - Word Count & Statistics
→Count words, characters, and reading time
[Text]Text Transform - Case, Reverse & Whitespace
→Convert text between different cases
[Text]Find & Replace
→Find and replace text with regex support
[Text]Text to Binary
→Convert between text and binary
[Text]NATO Phonetic Alphabet
→Convert text to NATO phonetic alphabet
[Text]Security
(7)Password Tools — Generate & Check Strength
→Generate & check password strength
[Security]JWT Tools — Decode, Encode, Verify & Inspect
→Decode, encode, verify & inspect JWTs
[Security]Hash Tools — Hash & HMAC Generator
→Generate hashes and HMAC signatures
[Security]Key Pair Generator — RSA & SSH Keys
→Generate RSA & SSH key pairs
[Security]Bcrypt Hash Generator
→Generate and verify bcrypt hashes
[Security]AES Encrypt / Decrypt
→AES-256 encryption and decryption
[Security]CSP Header Generator
→Generate CSP headers visually
[Security]Generator
(12)ID Generator — UUID, NanoID & CUID
→Generate UUID, NanoID & CUID identifiers
[Generator]Random String Generator
→Generate random strings and tokens
[Generator]Lorem Ipsum Generator
→Generate placeholder text for designs
[Generator]QR Code Generator / Decoder
→Generate and decode QR codes
[Generator]TOTP / 2FA Generator
→Generate TOTP 2FA codes
[Generator]Favicon Generator
→Generate favicons from text or emoji
[Generator]Mock Data Generator
→Generate realistic fake data
[Generator].gitignore Generator
→Generate .gitignore from templates
[Generator]Meta Tag Generator
→Generate SEO and social meta tags
[Generator]License Generator
→Generate open source licenses
[Generator]Chmod Calculator
→Calculate Unix file permissions
[Generator]Database Command Generator
→Generate DB commands & connection strings
[Generator]Code
(13)HTML Formatter
→Format and beautify HTML code
[Code]SQL Formatter
→Format and beautify SQL queries
[Code]CSS Formatter
→Format and beautify CSS code
[Code]Color Converter
→Convert colors between HEX, RGB, HSL formats
[Code]JavaScript Formatter
→Format and beautify JavaScript code
[Code]SVG Preview & Optimizer
→Preview and optimize SVG code
[Code]CSS Unit Converter
→Convert between CSS units
[Code]CSS Generator - Gradients & Box Shadows
→Create CSS gradients visually
[Code]Regex Quick Reference
→Regex syntax cheatsheet
[Code]JSON to CSS Variables
→Convert JSON to CSS custom properties
[Code]TypeScript Type Helper
→TypeScript utility type reference
[Code]Code to Image
→Create code snippet screenshots
[Code]Tailwind ↔ CSS Converter
→Convert Tailwind classes to CSS
[Code]Date & Time
(6)Timestamp Converter
→Convert Unix timestamps to dates and vice versa
[Date & Time]Cron Expression Parser
→Parse and generate cron expressions
[Date & Time]Time Zone Converter
→Convert times across global time zones
[Date & Time]Date Calculator - Diff, Age & Duration
→Calculate date differences
[Date & Time]ISO 8601 Date Formatter
→Format dates in multiple standards
[Date & Time]Calendar / Week Number
→Calendar with ISO week numbers
[Date & Time]