Regex Tester privacy
Regex Tester privacy is a practical developer tool built for fast production work. Most processing happens directly in your current browser.
Matches and capture groups
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Regex cheat sheet
\d digit, \w word character, + one or more, * zero or more, () capture group, ^ start, $ end.
How to use
Enter the Regex Tester privacy input, adjust the options, run the tool, then review the validated result. Downloads only start after an explicit button click.
Examples
Use Regex Tester privacy for publishing checks, SEO preparation, development snippets, asset cleanup, and repeatable production tasks without installing desktop software. Test patterns against sample text, inspect capture groups, and preview replacements before using a regex in code.
Comparison
The match list, highlighted text, and capture table stay visible together so debugging is faster. OneClickSite keeps input, settings, preview, and saving steps in one predictable workflow.
When to use
Use it when validating email patterns, log parsing, cleanup scripts, and search-replace rules.
Tips
Keep the original file or text until you compare the output, especially for client or production work. The same workflow is usable on mobile and desktop.
FAQ
Can I preview replacements?
Yes. Enter a replacement value and use the replacement preview button before copying the pattern into code.
Is my input uploaded to a server?
No. This tool runs in the browser and does not upload files or text to a server.
Can I use this for commercial work?
Yes. Review the output and keep your source files so you can compare results before publishing.
Does it work on mobile?
Yes. Inputs, controls, and result panels are designed for mobile and desktop use.