Is the Regex Replace tool free?

Yes, completely free. No registration required, no usage limits. Everything runs locally: Find Pattern and Replace With are processed on your device, never sent to a server.

What regex features are supported?

All JavaScript regex features are supported, including capture groups ($1, $2...), named groups, lookaheads, character classes, quantifiers, and flags like g (global), i (case-insensitive), m (multiline), s (dotAll).

What is capture group replacement?

Capture group replacement lets you reference matched subgroups in the replacement string. For example, regex (\w+)@(\w+)\.com with replacement $1 at $2 dot com transforms user@example.com to user at example dot com.

Can I preview replacements in real-time?

Yes. As you type the regex pattern and replacement string, the result area shows the replaced text in real-time with match count statistics.

🔄 Regex Replace

Online regex find & replace, supports capture groups, multiline, global replace, real-time preview

📝 Input Text

🔍 Regex Settings

Find Pattern

Replace With

g Global i Case-insensitive m Multiline s dotAll

Matches: 0 Replacements: 0

✅ Result

Replacement result will appear here...

💡 Common Regex Examples

❓ Frequently Asked Questions

Are there any usage limits for Regex Replace?

Regex Replace has no usage limits — it's free and unlimited. Since processing is done client-side, speed depends on your device. For very large files, we recommend processing in batches for the best experience.

Does Regex Replace upload my data to a server?

No. Regex Replace uses client-side processing — everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.

Do I need to install any software?

No. Regex Replace is a web-based tool — just open it in your browser and start using it. No downloads, plugins, or extensions required.

Is Regex Replace free to use?

Yes, Regex Replace is completely free to use. No registration or login required — all features are available immediately.

Is my data safe when using Regex Replace?

Absolutely. Everything runs locally: Find Pattern and Replace With are processed on your device, never sent to a server. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.

Can I use Regex Replace on my phone?

Yes. Regex Replace is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.