Does it support named capture groups?

Yes. Any named group using the (? ...) syntax is automatically detected and displayed separately in the match inspector.

Which regex flags are supported?

All standard JavaScript regex flags are supported: g (global), i (case-insensitive), m (multiline), s (dot-all), u (unicode), and y (sticky). You can toggle them with the flag buttons or type them directly.

Absolutely. All regex matching is performed locally in your browser using JavaScript's built-in RegExp engine. Your patterns and test strings never leave your device.

What are the preset patterns for?

The presets provide ready-to-use patterns for common use cases like email, URL, IPv4, date, and hex color validation so you can get started instantly without writing a pattern from scratch.

Is it safe to use Edita for sensitive files?

Absolutely. Edita processes all your files locally in your browser using WASM (WebAssembly) technology. Your documents never leave your device and are never uploaded to our servers, ensuring total privacy.

Does Edita store my data or file history?

No. We have a strict 'no-storage' policy. Once you close your browser tab, all traces of your processed files are gone. We don't track your content or keep any logs of your file data.

Why is Edita faster than other online converters?

Traditional tools require you to upload large files to a server, wait for processing, and then download them back. Edita eliminates all network lag by processing everything instantly on your own hardware.

No Server Upload Regex Tester for Students

Regex Tester for Students - private & secure no server upload processing in your browser. Zero server uploads, no lim...

Flags

1 match found

Presets

Test String

Live PreviewHello, World! Testing 123. Email: user@example.com URL: https://edita.tools/regex Date: 2024-07-18

Matches1

Capture Groups2

STEP 1

Pick

STEP 3

Save

Fast. Local. Effortless.

Manage your sensitive files with zero uploads. Everything happens directly in your browser.

Enter a Pattern

Type your regular expression into the pattern field and set flags like global, case-insensitive, and multiline.

Paste Your Test String

Add any text to the test string area. Matches are highlighted live as you type — no submit button needed.

Inspect Results

Explore every match, its index, capture groups, and named groups in the collapsible match inspector.

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Workflows & Solutions

Specialized Workflows & Use Cases

Tailored browser-based workflows designed for specific industry needs and compliance standards.

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Explore all industry solutions and use cases

Frequently Asked Questions

Everything you need to know about our private, browser-based file tools.

Still have questions? Contact us or check our How it Works page.