Core capabilities
See live matches. Inspect capture groups. Preview replacements with options.
Developer & Data
Test regular expressions with matches and capture groups.
Regex Tester runs expressions against sample text, shows matches and capture groups, and previews replacements.
No account or card required. Local-first Mac app.
Works locallyDesigned for on-Mac processing.
Signed and notarizedBuilt for Apple Silicon Macs.
No app telemetryNo usage tracking from Foldout itself.
Free 14-day trialNo account or card required.
What it does
Built for the common jobs people usually send to separate apps.
See live matches.
Inspect capture groups.
Preview replacements with options.
Detailed capabilities
What Regex Tester covers.
Concrete features, inputs, and workflow details for this tool.
Inputs and scope
Works with text and regular expressions.
How the workflow runs
Paste sample text. Enter a regular expression. Review matches and captures. Try replacement output if needed.
Regex Tester use cases
Common uses include pattern debugging, log parsing, text cleanup, and validation snippets.
How to use it
From opening the tool to saving the result.
- 01
Paste sample text.
- 02
Enter a regular expression.
- 03
Review matches and captures.
- 04
Try replacement output if needed.
Questions
Before you try Regex Tester
Which regex flavor does it use?
It uses the macOS regular expression behavior shown in the app.
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