- Is my data uploaded?
- No. Processing runs locally in your browser, so your files and text do not leave your device.
- How do I test a regular expression?
- Follow the steps above to test a regular expression. The result is generated directly in your browser.
- Is this tool free?
- Yes. It is free to use with no signup.
- Can I use it on mobile?
- Yes. The interface works on modern mobile browsers, tablets, and desktop browsers.
- What should I know about large files?
- Large inputs depend on your device memory and browser performance. If a file is very large, try processing fewer items at once.
- Which browsers work best?
- Current versions of Chrome, Edge, Safari, and Firefox are recommended.