Patchbay

Developer tools that cannot phone home

Encode, hash, diff, format, decode, convert — tools that run in this tab and nowhere else. Wire them together on the canvas and a throwaway one-liner becomes a pipeline you can see, share and re-run.

Start

Decode, then convert Base64 → JSON to YAML
Fingerprint a CSV CSV to JSON → SHA-256
Encode, then compare digests Base64 → SHA-256 and MD5
Every tool, one at a time A plain list at /tools

The first three are ordinary share links — the same kind the canvas’s Share button makes. A link carries the shape of a pipeline and never anything you typed into it.

connect-src 'none'

Every document here is served with a Content-Security-Policy that removes the browser’s ability to make a network request at all. fetch, XMLHttpRequest, WebSocket and sendBeacon are refused in the network stack, below the JavaScript — so nothing on this page can send what you paste anywhere, including code we did not write. Checked in Firefox and WebKit against the built app on every change, rather than asserted.

Works offline after the first load
A complete keyboard path, not a fallback
No account, no upload, no telemetry