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Two developer & design tools, side-by-side. See which fits your task.
Developer & Design
Test and debug regular expressions with real-time matching and explanations.
Open Regex TesterDeveloper & Design
Regex patterns for matching, trimming, and normalizing whitespace characters.
Open Whitespace RegexYour specific task is test and debug regular expressions with real-time matching and explanations. Open the page, drop your input, get the result — typically under a second.
Your goal is regex patterns for matching, trimming, and normalizing whitespace characters. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. Regex Tester focuses on test and debug regular expressions with real-time matching and explanations; Whitespace Regex focuses on regex patterns for matching, trimming, and normalizing whitespace characters. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both Regex Tester and Whitespace Regex work without signup. We only ask for an email if you decide to subscribe to a paid plan.