Filter Text Lines
Keep or remove lines that match plain text or a regular expression, with case and match behavior under your control. Processing takes place locally in your b…
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What Filter Text Lines does
Keep or remove lines that match plain text or a regular expression, with case and match behavior under your control.
Worked example
Keep lines containing “error” from an application log
Only matching error lines remain, in their original order
How the text is processed
The tool tests each line independently against the search text or regular expression. The include mode retains matches; the exclude mode removes them without reordering the remaining lines.
Useful workflows
- Extract matching log entries
- Remove comments or unwanted records
- Select rows containing a tag, domain or status
Limits and review checks
- An invalid regular expression cannot be evaluated.
- Case-sensitive matching treats Error and error as different text.
- Test broad exclusion patterns on a copy before replacing source data.
Frequently asked questions
Can I filter with more than one condition?
A regular expression can combine alternatives, but complex conditions should be tested on a small sample first.
Are matching lines sorted?
No. Filtering preserves their original order.
Processing takes place locally in your browser.