Regex Tester
Test and debug a regular expression against your own sample text. Every match is listed with its position and capture groups, so you can see exactly what the pattern is doing. It runs entirely in your browser, so it is safe to use with sensitive log data.
About the Regex Tester
Test and debug a regular expression against your own sample text. Every match is listed with its position and capture groups, so you can see exactly what the pattern is doing. It runs entirely in your browser, so it is safe to use with sensitive log data.
This tool runs completely offline in your browser. Nothing you enter is uploaded, which makes it safe to use with sensitive values such as internal addresses or tokens.
Frequently asked questions
What does the Regex Tester do?
Test and debug a regular expression against your own sample text. Every match is listed with its position and capture groups, so you can see exactly what the pattern is doing. It runs entirely in your browser, so it is safe to use with sensitive log data.
Is the Regex Tester free to use?
Yes. The Regex Tester is completely free with no account, no signup and no usage limits for normal use.
Is my input sent to your servers?
No. The Regex Tester runs entirely inside your browser using JavaScript, so nothing you type is transmitted to NetScanly or anyone else.