Browser extension
Regex Find in Page
Find in page with real regular expressions: flags, live count, next and previous, a results list with context, CSV export.
The find bar your browser should have had. Regular expressions with flags and whole-word mode, a live match count, next and previous navigation with highlights, a results list with surrounding context, and export to CSV.
Privacy: runs entirely in your browser, on the active tab, only when you click. No account, no network requests, no data collected.
Get it for Firefox Not on the Chrome Web Store yet
The Firefox version is live on addons.mozilla.org. A Chrome Web Store listing is planned but not published; this page will link it when it exists.