Regex Tester
Test regex patterns with flags, live matches and highlighted results.
Flags
Active: g
Test text
96 characters
Matches
Run the test to see matches and text highlighting.
100% local processing in your browser
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Benefits
- Validates regex quickly.
- Shows clear errors for invalid patterns.
- Includes visual highlighting for matches.
Practical value of Regex Tester
Regex Tester belongs to the encoding tools collection and is designed as a focused utility with crawlable context, clear limits and a direct result.
- Practical use
- This utility converts common formats used in URLs, data, QR and technical content to validate integrations with less friction.
- Privacy and scope
- 100% local processing in your browser
- Result quality
- The tool surfaces input errors and keeps the output clear for copying, downloading or review.
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- URL ParserParse URLs into protocol, host, path, query and hash for debugging.
- XML FormatterFormat XML with readable indentation for debugging and integrations.
- XML MinifyMinify XML by removing unnecessary whitespace and line breaks.
Frequently asked questions
Which flags are supported?
g, i, m, s and u.
Is test text sent to a server?
No. Everything runs in the browser.
Test regular expressions with real-time feedback
Regex Tester speeds up pattern debugging for validation, extraction and text processing workflows.
Use live match highlighting to iterate expressions quickly and reduce implementation errors.