EasyFilesConverter

Regex tester

Write a pattern, paste some text and see every match and capture group instantly - the quickest way to get a regex right.

Flags

Free · No sign-up · Your files are processed on your device and never uploaded

How to use Regex tester

  1. Paste or type…
    1

    Paste or type

    Put your content in the box - or try the example.

  2. Result appears instantly
    2

    Watch the result

    The result updates as you type - choose options above if needed.

  3. TXTCopy / Download
    3

    Download the result

    Ready in seconds. Your file never left your device.

Features

  • Flags g, i and m.
  • Match positions and capture groups.
  • Clear errors for invalid patterns.

Private by design

Everything runs in your browser. Nothing you paste is uploaded, logged or stored - safe for API responses, tokens and customer data.

Questions

Which regex flavour is this?

JavaScript (ECMAScript) - very close to the regex used in Python, Java and most editors.

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