6 free tools · 100% in-browser

Developer Tools

Fast, practical, and privacy-friendly tools for developers. Everything runs locally in your browser — your data is never sent to a server.

100% in-browser

Every tool runs locally. Your data never leaves your device or touches a server.

No accounts, no limits, no ads in the way of the tool. Just open and use.

Instant results, copy/download, drag & drop, and handy keyboard shortcuts.

Format, beautify, validate, and minify JSON online. Runs entirely in your browser.

Convert JSON into C# classes, records, and models with namespaces and serialization attributes.

Decode JWT headers and payloads, inspect claims, and check expiration — entirely in your browser.

Format and beautify SQL queries with customizable indentation, keyword casing, and dialect support.

Encode text and files to Base64 or decode Base64 back — with UTF-8, URL-safe Base64, and Data URIs. Runs entirely in your browser.

Generate random UUID v4 and time-ordered v7 identifiers, generate in bulk, validate UUIDs, and inspect versions — all in your browser.

More tools are on the way — Base64 encoder, UUID generator, cron expression helper, and more.