Overview
Introduction
Text copied from a PDF, web page, or generated output often carries extra blank lines that clutter the result.
This tool strips them all in one pass.
What Is Empty Line Remover?
A cleanup tool that filters out every line that's empty or contains only whitespace.
It runs entirely client-side as part of this site's String Tools collection, so nothing you paste is ever uploaded to a server.
How Empty Line Remover Works
The input is split into lines, each line is trimmed and checked for remaining content, and only non-blank lines are kept.
The transformation happens synchronously in JavaScript the moment you type, with no network round trip involved.
When To Use Empty Line Remover
Use it to clean up text copied from a document, tighten up generated output, or prepare a list for further line-based processing.
It's a fast way to get the answer without opening a code editor, a REPL, or writing a one-off script just to check.
Often used alongside Whitespace Remover and String Line Filter.
Features
Advantages
- Treats whitespace-only lines as blank, not just zero-length lines.
- Leaves the content of remaining lines untouched.
Limitations
- Removes blank lines entirely rather than collapsing consecutive ones to a single blank line.
Examples
Best Practices & Notes
Best Practices
- Use Filter String Lines instead if you need to remove lines matching a specific pattern rather than just blank ones.
Developer Notes
A line is kept only if `line.trim().length > 0`, which correctly treats a line containing only spaces or tabs as blank, not just a truly zero-length line.
Empty Line Remover Use Cases
- Cleaning up text copied from a PDF or web page
- Tightening up generated report output
- Preparing a list for line-based processing
Common Mistakes
- Expecting the tool to collapse multiple blank lines into one instead of removing them entirely.
Tips
- Pair with Remove All Whitespace if you also need to trim spacing within each line.