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Free Developer tools
Everyday utilities for developers. Data is processed locally, so it's safe to paste real payloads.
15 tools in this drawer
Pick one to get started. Everything runs in your browser.
Password Generator Strong random passwords JSON Formatter Beautify, minify & validate JSON JSON Converter JSON to CSV, XML & YAML Base64 Encode / Decode Text & images ⇄ Base64 URL Encode / Decode Percent-encode URLs & params Hash Generator MD5, SHA-1, SHA-256, SHA-512 UUID Generator Random v4 & v7 UUIDs JWT Decoder Decode JSON Web Tokens Diff Checker Compare two texts Regex Tester Test regular expressions live Number Base Converter Binary, hex, octal, decimal Cron Expression Builder Explain cron schedules Mock Data Generator Fake test data as JSON/CSV Markdown Editor Live Markdown preview Excel ⇄ CSV ⇄ JSON Convert spreadsheets instantly
In this drawer
About our developer tools
Free online developer tools: JSON formatter, Base64 and URL encoder, hash generator, JWT decoder, UUID generator, regex tester, diff checker and Excel/CSV converter.
Privacy
Free, and nothing is uploaded
Every tool on Toolbench is free to use, works on any device and needs no account. Most tools process your files and data directly in your browser, so nothing you enter is uploaded or stored on a server.