Private by design • No upload • Works offline
Browser Tools — Fast, Private Utilities for Developers
Format JSON, encode Base64, decode JWT, generate hashes, convert images and work with PDFs — all 100% in your browser. Your data never leaves your device.
JSON FormatterBase64JWT DecoderURL EncoderPDF Workflows
Featured tools
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JSON Formatter
Format, validate and beautify JSON with syntax highlighting.
Open →✓
JSON Validator
Validate JSON and get precise line/column errors.
Open →−
JSON Minifier
Minify JSON to reduce size for production.
Open →◈
JWT Decoder
Decode and verify JSON Web Tokens safely in your browser.
Open →⬡
Base64 Encoder
Encode text and files to Base64 locally.
Open →⬢
Base64 Decoder
Decode Base64 strings instantly.
Open →Privacy-first
Everything runs via File, Clipboard, Crypto & Canvas APIs on your device. We never see your JSON, files or tokens.
Read privacy →Fast & offline
Static Next.js on Cloudflare Pages. Heavy WASM loads only when you open Image/PDF tools.
How it works →