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Test regex against a CSV column.
Pick a column, type a regex, and see live which values match. Extract a capture group into a new column, or run find-and-replace across the column — all in your browser.
Pick a column, type a regex, and see live which values match. Extract a capture group into a new column, or run find-and-replace across the column — all in your browser.
Iterating on a regex against real data usually means a scratch script. Here you pick a column, type a pattern, and instantly see which values match — then extract a group to a new column or replace matches in place.
Columns are detected; pick the one to run your pattern against.
Standard JavaScript regex with flags. Matching rows highlight live as you type.
See match counts, pull the first capture group into a new column, or find-and-replace across the column.
No scratch script, no copy-paste into a regex site that can't see your columns.
Match count and a highlighted sample update as you edit the pattern and flags.
Pull the first capture group (or the whole match) into a new column you can download.
Apply a replacement across the whole column, with
Your data is matched in the browser. Nothing is uploaded.