Free online tools that stay in your browser

Simple utilities for everyday developer and SEO tasks. Everything runs client-side — your data never leaves your device. Fast, mobile-friendly, and free to use.

JSON Formatter / Beautifier

Paste JSON, format or minify it, then copy the result. Fully client-side.
UUID v7 Generator

Generate RFC 9562 UUID v7 IDs, bulk copy, and decode timestamps. Fully client-side.
ULID Generator

Generate sortable ULIDs, bulk copy, and decode timestamps. Fully client-side.
HAR → cURL Converter

Paste or upload a HAR, pick requests, get cURL with optional header redaction. Fully client-side.

Privacy-first

Processing happens in your browser. Nothing is uploaded to our servers.

Fast & light

Vanilla HTML, CSS, and JS — no heavy frameworks, no tracking scripts required.

Works offline-ready

Once loaded, tools work without a network round-trip for your data.