Remove Lines Containing Text
Delete every line that contains a substring or matches a regex.
Result
Kept 5 lines, removed 2 lines.
How Remove Lines Containing Text works
Paste any block of text and enter a substring — every line that contains it gets deleted, line by line, in your browser. Turn on regular expression to match patterns instead of plain text (for example ^\s*// to strip comment lines), and toggle case insensitiveso "TODO" and "todo" are treated the same. Flip invert to flip the logic and keep only the lines that match instead of removing them — handy for extracting just the error lines from a log or just the rows containing a keyword from a CSV export. Nothing is uploaded; filtering happens entirely on your device.
Private & free — this tool runs entirely in your browser.
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