Remove Lines Containing Text deletes every line that matches your keyword, phrase, or regular expression. It is built for log cleanup, code review, CSV pre-processing, blacklist filtering, and fast removal of noisy records while preserving the rest of your text.
Remove Lines Containing Text processes text directly in your browser and returns a clean output plus practical statistics. The result card helps you confirm how many lines, items, matches, or characters were changed before you copy the result.
For very large pasted files, preview the output before replacing production data. Browser-based processing keeps the text local to the page.
Sample input: INFO Server started ERROR Database failed WARNING Memory low INFO Ready
The tool uses line-based or delimiter-based parsing depending on the selected mode. It preserves original item order unless sorting is enabled, and it keeps duplicate values unless deduplication is enabled.
Complex quoted CSV, nested delimiters, or malformed regular expressions may require a dedicated CSV or regex tool. Always review output for high-stakes data.
Enter the word, choose a match mode, and run the tool. Matching lines are removed from the output.
Use the keyword field with one keyword per line or separate terms with commas. The tool checks each line against the selected logic.
Use ERROR as the keyword and keep the match mode set to Contains, or use Regex for more advanced log patterns.
Yes. Select Regex pattern and enter a valid JavaScript regular expression without slashes.
Use a prefix pattern such as ^# or ^// in Regex mode to remove comment-style lines.
| Module | Purpose |
|---|---|
| Input parser | Reads pasted text, uploaded text, and drag-and-drop files. |
| Option engine | Applies mode, keyword, delimiter, length, or output preset choices. |
| Cleanup layer | Trims values, removes empty items, deduplicates, or sorts when enabled. |
| Result report | Shows output statistics, quality score, and export-ready JSON or CSV. |