Online Regex Tester & Debugger
Stop wasting time debugging complex regular expressions. Pixedra’s Online Regex Tester provides a simple, high-performance environment to validate and visualize your patterns. Whether you are building a data scrubber or an input validator, our tool highlights matches and capture groups instantly. Best of all, like every tool on Pixedra, the processing happens 100% locally in your browser for total privacy.
Why Pixedra is the Safest Way to Test Regex
Most online regex debuggers send your test strings—which often contain sensitive user data or private logs—to a remote server. Pixedra takes a different approach. We use Client-Side JavaScript to run your regular expressions in your RAM. This ensures that your code, logs, and sensitive data are never uploaded, never logged, and never seen by anyone but you.
Key Features of our Regex Debugger
- Real-time Highlighting: See your matches update as you type.
- Detailed Match List: A clean breakdown showing the exact character index and content of every match found.
- Flag Support: Easily toggle Global (g), Case-insensitive (i), and Multiline (m) flags.
- Pattern Library: Access common regex patterns for email validation, URL parsing, and phone number formatting.
Quick Regex Cheat Sheet for Developers
| Character | Description | Example |
|---|---|---|
| ^ | Starts with | ^Hello |
| $ | Ends with | world$ |
| \d | Any digit | \d{3} (Match 3 numbers) |
| \w | Any alphanumeric | \w+ (Match a word) |
| [a-z] | Character range | [0-9] (Match any number) |
Frequently Asked Questions
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