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Regex Find & Replace

Find and replace text using regular expressions with real-time preview and match highlighting

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About This Tool

Regex Find & Replace lets you search text with regular expression patterns and substitute matches with replacement text. It supports capture group references ($1, $2), four regex flags, common pattern presets, and shows match counts and a live result preview — all processed locally in your browser.

Key Features

Quick Preview

Use Cases

regex find-replace pattern text-processing

Frequently Asked Questions

What is the Regex Find & Replace?

The Regex Find & Replace is an online tool that finds and replaces text using regular expressions with real-time preview. It supports capture groups, four regex flags, and common pattern presets — all processed locally in your browser.

Does the tool support capture groups in replacements?

Yes, you can use $1, $2, etc. in the replacement string to reference capture groups from your regex pattern. This allows you to restructure matched text flexibly.

What regex flags are available?

The tool supports four flags: Global (g) for finding all matches, Case-insensitive (i), Multiline (m), and DotAll (s) which makes the dot match newlines.

Is my data safe when using this tool?

Absolutely. All processing happens locally in your browser. No data is uploaded to any server, ensuring your information remains completely private and secure.

Can I use common pattern presets?

Yes, the tool includes presets for common patterns like email, URL, phone, IP address, HTML tags, and more. Click any preset chip to load the pattern and replacement instantly.