About ToolBox
A free online toolbox built for developers. Everything runs in your browser — no sign-ups, no uploads, no installs. Just open and use.
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100% Free
No accounts, no paywalls, no usage limits — every tool is free forever
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Client-Side Only
All processing happens in your browser. Your files never leave your device
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Zero Setup
No downloads, no plugins. Works on any device with a browser
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Always Improving
New tools and features added based on real developer workflows
All Tools
🖼️Image Tools: Compress, Convert, Crop, Huawei AppGallery Images, Image Info Viewer
💻Dev Tools: Timestamp Converter, GitHub Hosts, Cron Editor, UUID Generator, Random Number Generator, GUID Generator
🔄Format Tools: Base64 Encode/Decode, Word Count, URL Encode/Decode, Markdown Preview, CSS Minifier, MD to HTML, Number Base Converter, Translator
🔐Crypto Tools: Text Encrypt, Hash Generator, Hash Compare, JWT Decoder
🎨Design Tools: QR Code Generator, Color Converter, Color Palette
📝Code Tools: Regex Tester, Regex Generator, JSON Diff, Diff Viewer
📊Data Tools: JSON Formatter, JSON to CSV, ID Card Validator, SQL Formatter, SQLite Playground
📄PDF Tools: Invoice Merge, PDF Merge, PDF Split, PDF to Image
📅Calendar Tools: Perpetual Calendar
💰Finance Tools: Mortgage Calculator