How to Use Regex Tester
Test regular expressions and see matches in real time. A practical Toolara guide with tips, workflow advice, and links to the free online tool.
Using the free tool while you read? Open Regex Tester.
What Regex Tester helps with
Test regular expressions live against sample text. See matches highlighted instantly and inspect match positions while tuning patterns.
Test regular expressions and see matches in real time.
What you can do
Open the free Regex Tester on Toolara, complete the task in your browser, and copy or download the result when you are done.
- Live match highlighting
- Supports common regex flags
- Lists match values and indexes
Work faster with text tools
Start with a small sample when you are testing a pattern or transformation, then apply the same steps to the full document once the result looks right.
Keep an original copy before bulk find/replace, sorting, or deduplication so you can undo unexpected changes.
- Preview on a short excerpt first
- Normalize line endings when comparing files
- Export or copy the final version immediately
Try it on Toolara
Regex Tester is free to use on Toolara.io with no signup. Open the tool, run through the workflow above, then explore related text utilities if you need a neighboring step.