20 tools · no sign-up · no uploads
The developer tools you keep googling, in one fast place.
Format JSON, decode a JWT, generate an app icon set. Every tool runs entirely in your browser — your data never touches a server, because there isn't one.
Popular tools
- JSON Formatter Format, validate and minify JSON.
- UUID Generator Generate v4 and v7 UUIDs in bulk.
- Base64 Encoder / Decoder Encode and decode Base64, including URL-safe.
- JWT Decoder Inspect JWT headers, claims and expiry.
- App Icon Generator One image to every iOS, Android and web size.
- Password Generator Strong, random passwords from crypto.getRandomValues.
- QR Code Generator Text or URLs to a downloadable QR PNG.
Formatters
Pretty-print, minify and validate structured data.
Generators
Produce IDs, hashes, assets and other artifacts.
- UUID Generator Generate v4 and v7 UUIDs in bulk.
- Hash Generator SHA-1, SHA-256, SHA-384 and SHA-512 digests.
- Lorem Ipsum Generator Placeholder text in words, sentences or paragraphs.
- Password Generator Strong, random passwords from crypto.getRandomValues.
- QR Code Generator Text or URLs to a downloadable QR PNG.
- Cron Explainer Translate a cron expression to plain English.
Encoders & Decoders
Translate between encodings and inspect tokens.
Converters
Move values between units, formats and representations.
Images
Generate and transform image assets in the browser.
Nothing leaves your browser
Every tool is client-side JavaScript. No API calls, no logging, no analytics on what you paste.
Fast by construction
Static pages with a single interactive island each. Tools load instantly and work offline once cached.
No accounts, no limits
No sign-up wall, no rate limits, no “upgrade to unlock”. Bookmark the tool you use and get on with it.