Regex Tester
This tool is connected to the internal API and ready to use.
Result
Regex Tester
Regex tester
What is a regular expression?
A regular expression, or regex, is a text search pattern. It can find, validate or capture matching parts of text.
What is this tool used for?
- Find email addresses, IP addresses or domains in text
- Validate input against a required pattern
- Extract matching text fragments
- Use flags: g = all matches, i = ignore case, m = multiline
Examples
“Use example” fills the matching fields. Then run the tool action.
Find email addresses
Finds simple email addresses in text.
[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}Find IPv4 addresses
Finds IPv4-like values in the test text.
\b(?:\d{1,3}\.){3}\d{1,3}\bFind PLUS23 domains
Finds plus23.org and any subdomain.
\b(?:[a-z0-9-]+\.)*plus23\.org\bResult
The result lists all matches and their positions. A match does not automatically prove that the value is technically valid.