Regex Extractor

How to use it

1. Paste the text to scan into the left panel.
2. Enter a regular expression and any flags (g is pre-filled; add i for case-insensitive, m for multiline).
3. Click Extract (or keep typing) and read the match table on the right; each capture group gets its own column.
4. Tick Remove duplicate matches to collapse repeated values, then Copy or Download the result as CSV.

Common use cases

• Harvesting structured data - pull emails, dates, order numbers or URLs out of logs, dumps and pasted emails.
• Auditing content - list every link, price or placeholder token in a document before publishing.
• Feeding spreadsheets - export matches as CSV with one column per capture group, ready to open in any spreadsheet app.
• Learning regex - see exactly what a pattern with groups returns, match by match.

Why it stays private

Matching runs entirely in your browser's memory using the built-in regular expression engine. Nothing is uploaded, no account is needed, and no network request is made, so scanned text never leaves your device.

FAQ

Q: What does the flags field accept? A: Standard JavaScript regex flags: g for all matches, i for case-insensitive, m for multiline anchors, s for dot-all, u for unicode and y for sticky. Without g, only the first match is reported.

Q: How does duplicate removal work? A: When enabled, rows whose full match text was already listed are skipped. Capture groups are not compared separately - two rows with identical match text collapse into one.

Q: What ends up in the CSV file? A: A header row (match, group1, group2, ...) followed by one row per match, with fields quoted per the usual CSV rules. Missing groups export as empty cells.