About Regex Bench

Why these run in your browser

Text tools get used on unpublished drafts, contracts, log extracts and internal documents. Pasting any of that into a hosted service transmits it to somebody else's server, and for a great deal of professional work that is simply not allowed.

Every tool here is JavaScript running on your own machine. There is no upload step and no server-side processing, so your text is never transmitted. Close the tab and it is gone. The only request a page makes after loading is a cookieless page-view count carrying the page's own URL, described on the privacy page.

Built for speed

Each page is a single request with its styles and code inlined. No web fonts, no framework, no tag manager. Two ad slots sit below the tool rather than wrapped around it, which is the opposite of how most tools in this category are now built.

Accuracy over convenience

Where a common shortcut gives a wrong answer, these tools take the longer route. Title case follows real style rules instead of capitalising everything. Text comparison uses a longest common subsequence so an inserted line does not make the rest of the document look changed. Reading speed uses a figure from published research rather than a round number.

How this site is funded

Advertising, placed below the tool rather than around it. The tools themselves stay free, and there is no paid tier that unlocks a feature the free version withholds.

Contact

Corrections and bug reports are welcome. If a tool gives a wrong result, that is a bug worth fixing, and a reproducible example is the fastest way to get it fixed. Reach us at hello@regexbench.com.