Empty Line Remover
Clean up text and code by automatically removing empty lines and whitespace-only rows. Features line counting statistics and regex-based filtering.
About
Data sanitation often requires the precision removal of non-functional vertical space. Developers and content editors frequently encounter text dumps, log files, or code snippets where excessive line breaks disrupt readability or cause parsing errors. This utility processes raw text strings to filter out lines containing zero characters or lines consisting solely of whitespace characters like tabs and spaces. It simplifies the transition from raw copy to production-ready code or content. Precise line removal ensures that subsequent data processing steps or CSV parsers do not encounter unexpected null values. The tool distinguishes between truly empty strings and strings containing hidden whitespace to ensure accurate formatting.
Formulas
The filtering logic relies on Regular Expressions to identify lines that lack semantic content. A line is considered "empty" if it satisfies the following condition:
In this context, the regex anchor ^ denotes the start of the line and $ denotes the end. The character set \s* matches zero or more whitespace characters. The reduction ratio R is calculated as:
Reference Data
| Character Name | Symbol / Code | Regex Representation | Description |
|---|---|---|---|
| Line Feed | LF (\n) | \n | Used in Unix/Linux systems to mark the end of a line. |
| Carriage Return | CR (\r) | \r | Used in early MacOS and combined with LF in Windows. |
| Space | (U+0020) | \s | Standard spacing character. |
| Horizontal Tab | TAB (\t) | \t | Indentation character often creating "empty" looking lines. |
| Non-Breaking Space | NBSP ( ) | \xA0 | Space that prevents line breaks (common in web scraping). |
| Vertical Tab | VT (\v) | \v | Rare vertical formatting character. |
| Form Feed | FF (\f) | \f | Page break character. |