Streamline your logs, code, or data lists by filtering lines according to their starting characters. Whether you want to remove all 'DEBUG:' lines or keep only lines starting with an email prefix, this tool provides a fast and interactive way to clean large text blocks without complex regex knowledge.
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Remove Lines Starting with Specific Text
Filter out or keep only the lines that start with a specific string or character. Advanced text cleaning tool. Fast, free, and 100% private browser tool.
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About Remove Lines Starting with Specific Text
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Zero Server UploadsExecution occurs entirely in browser memory via WebAssembly and HTML5 Canvas.
HIPAA & GDPR ReadySafe for confidential tax forms, medical records, financial sheets, and legal contracts.
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Automatic RAM PurgeBuffers and caches are automatically wiped clean the instant you close the tab.
1
Input Text
Paste your multi-line content into the console.
2
Set Filter
Type the starting characters you want to match.
3
Apply
Toggle between 'Remove' or 'Keep' mode to get the result.
Key Features
Flexible Filtering
Choose to either keep or remove matching lines.
Case Sensitivity
Optionally toggle case-sensitive matching.
Live Preview
See your filtered list update as you type the prefix.
Frequently Asked Questions
Currently, the tool supports single prefix filtering for maximum speed. For complex multiple-prefix filtering, we recommend our Regex Extract tool.
Yes, you can toggle case sensitivity to ensure exact matches or broad filtering depending on your data needs.
The filter primarily focuses on your matching criteria, but it naturally cleans up trailing spaces as it processes each line.
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