Regex Tester
Test regular expressions against text with real-time match highlighting.
Related Tools
What this tool does
Regex Tester tests regular expressions against sample text. It accepts a regex pattern and text to match and returns highlighted matches and match feedback. Use it for validating patterns for emails, URLs, logs, form fields and text extraction.
Related extensions and formats
These are the formats and values directly related to the Regex Tester workflow: a regex pattern and text to match becomes highlighted matches and match feedback.
Regular expression
RegexA pattern language for matching, validating and extracting text from strings, logs and form values.
Plain text
.txtA simple text file for logs, lists, generated values, decoded output and other unstructured content.
How to use this tool
- 1Paste or enter a regex pattern and text to match into Regex Tester.
- 2Adjust the available options when the tool provides extra controls.
- 3Review highlighted matches and match feedback, then copy or download the result.
Common use cases
- Use a regex pattern and text to match for validating patterns for emails, URLs, logs, form fields and text extraction.
- Generate highlighted matches and match feedback without installing external utilities.
- Quickly check a regex pattern and text to match before pasting it into code, documentation or integrations.
- Keep sensitive data in the browser during quick development tasks.
Frequently asked questions
What is Regex Tester used for?
It is used for validating patterns for emails, URLs, logs, form fields and text extraction, converting or analyzing a regex pattern and text to match to produce highlighted matches and match feedback.
What input can I use with Regex Tester?
Use a regex pattern and text to match. The expected result is highlighted matches and match feedback.
Does Regex Tester send my data to the server?
No. DevMe tools are designed to process data in the browser whenever possible.