What regex flavors are supported?

JavaScript regex syntax (ECMAScript), which is compatible with most web use cases.

Does it show capture groups?

Yes, all capture groups and named groups are shown in the results panel.

g (global), i (case-insensitive), m (multiline), s (dotAll), u (unicode).

Yes, paste multi-line text into the test string area.

Common pattern shortcuts are shown in the reference panel.

javascript

Test and debug regular expressions online. Highlight matches, test flags, and view capture groups.

Regular expression

//g

Flags

Test string

Type your regular expression in the pattern field.

Toggle flags like global (g), case-insensitive (i), multiline (m).

All matches are highlighted in the test string.

Format, validate, and minify JSON data online. Syntax highlighting, error detection, and tree view.

Encode and decode URLs and query strings. Escape special characters for safe URL usage.

Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text or files. Browser-based, private.