Regex Tester

Test regular expressions against text in real time. Shows all matches, groups, and positions.

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Drag & drop a file here, or click to browse

Supports documents, images, audio, video, and text files

Options

Pattern

Flags:

i — case insensitive

m — multiline

s — dotAll

Input

Output

Privacy: This tool runs entirely in your browser. No data is sent to our servers. We don't store, share, or have access to any of the information you process here.

Examples

Example 1

The quick brown fox jumps over the lazy dog

Click "Example 1" above to load

Frequently Asked Questions

Q: Which regex flavor is used?

A: JavaScript (ECMAScript) regex syntax.

Q: What flags are supported?

A: g (global), i (case-insensitive), m (multiline), s (dotAll).

Q: Does it show capture groups?

A: Yes, all capture groups are listed for each match.

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Privacy & Security

This tool runs entirely in your browser. No data is sent to our servers. We don't store, share, or have access to any of the information you process here.