Hasher is a browser extension (and a standalone web page) that computes hashes, checksums, ciphers and everyday conversions for text you type into it.
Nothing you enter leaves your browser. All computation happens locally, in the extension popup or on the page. The extension makes no network requests, embeds no analytics or telemetry, has no accounts and no backend.
What is stored. The extension keeps two settings in the browser's localStorage: the last tab you used and the theme you picked. Nothing else is stored — the text you type is gone when the popup closes.
Permissions. The only permission the extension requests is clipboardWrite, used to copy a result to the clipboard when you click it. It does not read the clipboard, your browsing history or the content of web pages.
Third parties. No data is shared with anyone, because none is collected. The standalone page at https://s12v.github.io/hasher/ is a static site hosted on GitHub Pages; GitHub may log the requests that load it, as described in GitHub's privacy statement.
Changes. If this policy ever changes, the new text will be published at this address and in the extension's source repository.
Contact. Questions go to the issue tracker.
Last updated: 13 September 2026.