Regex Bulk Replace
Bulk regex replace with capture groups.
⇄Regex Bulk Replace
All processing happens locallyWhat this tool does
Regex Bulk Replace is a Regex Bulk Replace that computes locally and shows the result instantly., everything runs inside your browser, so neither the key nor the plaintext ever leaves your device.
Copy the result directly. Keys are never persisted anywhere, so save them yourself.
How to use it
- Paste or type your content into the input field at the top, or press the sample button to load demo data.
- Adjust the options below the input, such as output format, separators, letter case or precision.
- Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
- When the result looks right, use the copy button in the corner, or download it as a local file.
Tips and notes
Clean up stray spaces and line breaks before pasting for more accurate results.
FAQ
$1 is the first capture group, $& the whole match, and $` / $’ are the text before and after the match.
Clear the global g flag to replace just the first match. For finer control, constrain the context with lookarounds in the pattern.
Yes. With the u flag Unicode is handled correctly, including Chinese, emoji and combining marks.
Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.
No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.
Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.
Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.