Free, fast, no-signup developer tools + guides.
JSON, Base64, Regex, UUID, URL encoding — all in one place.
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Format, validate & minify JSON instantly
Open Tool →Encode & decode Base64 strings and files
Open Tool →Test regex patterns with real-time matching
Open Tool →Encode & decode URLs and query strings
Open Tool →Generate v4 UUIDs instantly
Open Tool →MD5, SHA-1, SHA-256 hash generation
Open Tool →Compare text and find differences
Open Tool →Decode and inspect JSON Web Tokens
Open Tool →Build & test cron expressions visually
Open Tool →Convert Unix timestamps to dates and back
Open Tool →No fluff. Just tools that respect your time.
Just open and use. No accounts, no paywalls, no friction.
Everything runs in your browser. Your data never leaves your machine.
No loading spinners, no ads, no popups. Just paste and go.
Fully responsive. Developer tools in your pocket, anywhere.
In-depth articles to level up your workflow.
Learn practical prompt engineering techniques for code generation in 2026, with reusable templates, examples, tests, and AI workflow tips.
Learn secure password hashing in Node.js and Python using Argon2id, bcrypt, salts, peppers, migration patterns, and production-ready code.
Learn how to build reliable AI chatbots with JSON schemas, validation, retries, and typed structured output patterns for production apps.
Running AI models locally for development — practical guide for developers with code examples and best practices.
Learn practical DNS configuration for developers in 2026: records, TTLs, email auth, debugging commands, and deployment-safe patterns.
Learn how WebAssembly powers fast browser-based developer tools in 2026, with practical patterns, code examples, and performance tips.
DevToolKit started because we were tired of ad-riddled, slow, bloated tool sites. Every tool here is free, fast, and private — built with the same standards we'd want for ourselves.
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