DevToolKit
14 free browser dev tools, no tracking, offline, 7 languages
DevToolKit launched on June 8, 2026 with 1 votes.
What it does
A collection of 14 essential developer tools that run entirely in your browser. No server, no tracking, no sign-up required. Tools include JSON formatter, Base64 encoder/decoder, JWT decoder, timestamp converter, UUID generator, hash generator, diff checker, Markdown preview, CSS gradient generator, and more. 100% private, works offline, supports 7 languages.
Free online developer tools that run 100% in your browser. JSON formatter, Base64 encoder, JWT decoder, URL encoder, and more. No data sent to servers.
Beautify, minify, and validate JSON data. Handles large files with ease. Encode text to Base64 or decode Base64 strings. Supports image conversion. Convert JSON data to CSV for Excel, or CSV back to JSON format. Decode and inspect JSON Web Tokens. View header, payload, and signature. Convert between Unix timestamps and human-readable dates with timezone support. Generate random UUIDs (v4) instantly. Single or batch generation. Generate MD5, SHA-1, SHA-256, SHA-512 hashes from any text input. Generate placeholder text in paragraphs, sentences, or words. Convert colors between HEX, RGB, HSL, and Tailwind CSS classes. Write Markdown and see live preview. Export to HTML anytime. No server…from devtools-site-301.pages.dev
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