Filter Lines by Length
Extract or remove lines based on character count. Set minimum and maximum length limits to clean logs, lists, and datasets instantly.
Length Filter Settings
This tool is great for cleaning up CSV data where you expect a certain number of characters per field, or for 'extracting' or 'filtering' specific length items from logs.
- Minimum Length: Keep only lines that have *at least* this many characters.
- Maximum Length: Keep only lines that have *at most* this many characters.
- Precision: Enable 'Trim' to ignore leading/trailing spaces when calculating length.
Processing is private and happens entirely in your browser.
Optimize Your Data with an Online Line Length Filter
Managing large lists or log files often requires isolating data based on specific constraints. Our Online Line Length Filter is a specialized utility designed to help you extract or remove lines based on their character count. Whether you're looking for extremely long lines that might indicate a bug, extracting short keywords from a dictionary, or cleaning up data based on standard field widths, our tool provides the precision you need. With both minimum and maximum length constraints, along with smart options for trimming whitespace and handling empty lines, you can refine your dataset in seconds. It's an indispensable tool for data analysts, developers, and writers who need to enforce character limits or isolate specific data patterns within a larger document. Like all our tools, it's 100% private and runs entirely in your browser.
Precision Length Filtering
Dual-Limit Constraints
Set independent minimum and maximum character limits to capture the exact range of data you need.
Trim Before Measuring
Optionally ignore leading and trailing spaces to measure the actual content length of each line accurately.
Empty Line Management
Choose whether to preserve empty lines or filter them out automatically as part of your cleanup process.
Live Line Counter
See exactly how many lines remain in your filtered set in real-time as you adjust your length constraints.
Frequently Asked Questions
Does 'trim lines' affect the final output?
Yes. If 'Trim lines before measuring' is enabled, the output will also be trimmed to ensure the result is as clean as possible.
Can I use this for word counts instead of characters?
Currently, this level filter tracks individual character length (including spaces). For word-based analysis, we recommend using our 'Word Counter' tool.
Is there a maximum length I can filter for?
No. You can enter any positive integer for both min and max fields. The tool can handle lines with thousands of characters easily.
Where is my data processed?
Your text never leaves your device. All filtering logic is executed locally within your web browser using high-performance JavaScript.