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Regex Tester

Use Regex Tester online for free. Set Text, Regex pattern, Flags and run it in your browser. No sign-up required.

Input

Result

How to use

  1. Open Regex Tester and review the inputs below.
  2. Enter your values and check the units shown beside each field.
  3. Adjust the options, then press Run or Calculate. Interactive tools show their own start controls in the result area.
  4. Review the result. Use the copy or download control when it is available.

Inputs and starting values

InputStarting value / exampleAvailable options
Text
Enter your own value
Regex pattern
Enter your own value
Flags
gu

Things to check

Very complex patterns can take a long time to run.

The starting values are examples, not recommendations. Check the units and replace them with your own values.

Frequently asked questions

Are my inputs and files uploaded?

The tool processes inputs in your browser without uploading them. Browser storage, microphone or sensor permissions are described by the tool when applicable.

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