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.
Available tools
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JSON Formatter / Beautifier
Paste JSON, format or minify it, then copy the result. Fully client-side.
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UUID v7 Generator
Generate RFC 9562 UUID v7 IDs, bulk copy, and decode timestamps. Fully client-side.
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ULID Generator
Generate sortable ULIDs, bulk copy, and decode timestamps. Fully client-side.
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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.