Developer Text Tools

Python Regex Tester

Use the free python regex tester for instant results. No signup, clear examples, privacy-first processing and helpful exports.

Live text analyzer

Private · runs in your browser

About this tool

The Python Regex Tester is part of our Regex and String Utilities suite. It runs entirely in your browser so you get instant results without uploading your work.

How to use

Paste or type your text into the editor above.
Read live metrics on the right — words, characters, sentences, reading time and more.
Apply transforms (case, cleaning, sorting) with one click.
Copy results back to your clipboard when you're done.

Method & limitations

Validate SERP; build working utility; add unique examples, tests, accessibility and privacy details.

FAQ

Is my text stored?

No. Core counting and analysis run in your browser. Nothing is sent to a server.

Does it work offline?

Once the page has loaded, yes — the analysis engine runs locally.

What languages are supported?

Unicode text is fully supported. Language-specific rules such as syllable counting are tuned for English.