Elysia Tools
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Text Processing
Quickly return text lines that match a pattern or a regex
Execution
Fill in the form, run the tool, and review the result in one place.
Samples
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Tool usage guide
Filter Text Lines is a powerful utility designed to help you quickly extract, isolate, or remove specific lines from large blocks of text based on custom patterns, regular expressions, or predefined formats.
Background
A server log file contains thousands of lines of informational messages mixed with occasional errors.
Problem
Manually searching for 'ERROR' tags is inefficient and prone to human error.
How to use
Paste the log content, select 'Contains Text', enter 'ERROR' as the pattern, and click filter.
Outcome
The tool returns only the lines containing 'ERROR', allowing for immediate troubleshooting.
Background
A raw export of customer data contains mixed entries, including invalid formats and empty rows.
Problem
Need to quickly extract only valid email addresses for a newsletter campaign.
How to use
Paste the list, select 'Email Format' as the filter type, and set 'Match Type' to 'Exclude Empty Lines'.
Outcome
A clean, formatted list of valid email addresses ready for import into an email marketing platform.
Yes, select the 'Regular Expression' filter type and enter your regex pattern in the pattern field.
Select 'Contains Text', enter the word, and check the 'Invert Match' box to show only lines that do not contain that word.
Yes, you can toggle the 'Case Sensitive' checkbox to ensure your filter respects character casing.
Yes, set the 'Match Type' option to 'Exclude Empty Lines' to automatically strip blank lines from your output.
The tool is designed for high-performance text processing, though extremely large files may be limited by your browser's memory capacity.