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Regex Tester – Free Online Tool
Quick answer: Test regular expressions live and see every match with its position.
About this tool
Type a pattern and flags, paste your test text and see all matches instantly. Errors in the pattern are explained.
How to use the Regex Tester
- Enter your text, choose your file or set the options in the tool above.
- Click the action button for the result you want.
- Copy or download the output. Nothing leaves your device.
Why use ToolWorlds?
- Free, with no registration
- Private: runs in your browser
- Works on phones, tablets and desktops
Frequently asked questions
- What does the g flag do?
- It finds all matches instead of stopping at the first.
- Is my data safe?
- Yes. Processing happens in your browser. Nothing you enter is sent to our servers.
- Is it free?
- Yes. It is free, with no sign-up or usage limit.
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