Regex Explainer

Explain regular expressions in plain language.

Regex pattern

Flags (e.g. g, i, m)

Explanation

What is Regex Explainer?

Paste a regex pattern and see a short explanation of its structure and common tokens (anchors, character classes, quantifiers, etc.).

1. Enter a regex pattern (without slashes).

2. Optionally set flags (e.g. g, i, m).

3. Read the explanation below.

Test regular expressions and highlight matches.

Generate regular expressions from common patterns.

Compare two texts and see differences.

Remove duplicate lines from text.

Sort lines of text alphabetically.

Count words, characters, and lines.

Format, validate, and beautify JSON with syntax highlighting.

Test regular expressions and highlight matches.

Encode text to Base64.

Generate UUID v4 identifiers.

Decode and inspect JWT header and payload.