Developer tools
Free tools for shipping, debugging, and testing faster
Every tool in this hub is designed for quick, practical use in the browser without complicated setup or hidden backend processing.
Tool catalog
Useful tools for everyday developer workflows
Developer Tools
JSON Formatter
Validate, format, and minify JSON payloads without leaving the browser.
Developer Tools
Base64
Encode text to Base64 or decode any valid Base64 payload safely in-browser.
Developer Tools
Regex Tester
Validate patterns and inspect match groups for validation rules, filters, and log parsing.
Developer Tools
JWT Decoder
Inspect JWT header and payload claims to confirm expiry and user data without verifying signatures.
Developer Tools
UUID Generator
Generate version 4 UUIDs for testing, prototyping, or feature flags.
Developer Tools
Hash Generator
Create SHA-1, SHA-256, and SHA-512 hashes for strings and payloads.
Developer Tools
URL Encoder
Cleanly encode or decode URL-safe values for queries, routes, and API work.
Productivity
Word Counter
Measure reading time, characters, words, and sentence length instantly.
Productivity
Case Converter
Switch text between lower, upper, title, sentence, and camel case.
Productivity
Diff Checker
Spot the exact differences between two text blocks for code, notes, or copy.
Productivity
Lorem Ipsum
Generate placeholder copy in multiple lengths for prototypes, wireframes, and UI mockups.
Developer Tools
API Playground
Send browser-side requests to HTTP endpoints and inspect status, headers, and response timing.