About Sort Lines
Sort Lines is a browser-based text sorting utility that organizes lines in ascending (A→Z) or descending (Z→A) order. It supports both case-sensitive and case-insensitive sorting, so you can decide whether "Apple" and "apple" should be grouped together or treated differently. The optional "Remove empty lines" feature cleans up your list by stripping blank lines before sorting.
This tool is ideal for developers, writers, data analysts, and anyone who works with line-based text. Whether you are sorting a list of CSS classes, organizing glossary terms, or arranging server log entries, Sort Lines delivers clean results without installing any software.
How to Use Sort Lines
- Paste or type your list into the input area, with one item per line.
- Select the sort direction: A → Z (ascending) or Z → A (descending).
- Optionally check Remove empty lines to strip blank lines and Case-insensitive to ignore letter casing.
- The sorted result appears instantly. Copy it for use in your project.
Key Features
- Ascending & descending — Sort A→Z or Z→A with one click
- Case-insensitive option — Treats uppercase and lowercase letters equally
- Empty line removal — Optionally strips blank lines for cleaner output
- Instant processing — Sorts thousands of lines in milliseconds
- Browser-based privacy — No data is sent to any server
When to Use This Tool
- Alphabetizing name lists, glossary terms, or vocabulary words
- Sorting CSS class names, configuration keys, or environment variables
- Preparing data for comparison or deduplication
- Organizing imports, dependencies, or package lists in code
- Cleaning up any line-based text that needs consistent ordering
Technical Details
Sort Lines splits your input by newline characters and uses JavaScript's native Array.prototype.sort() with a locale-aware comparison function. When case-insensitive mode is enabled, both strings are converted to lowercase before comparison. The "Remove empty lines" option filters out lines that contain only whitespace before sorting. The algorithm is stable, meaning items that compare equal retain their original relative order. All processing happens in your browser with no external dependencies or network requests.
Conclusion
Sort Lines is a simple yet powerful tool for organizing any line-based text in your browser. With options for sort direction, case sensitivity, and empty line removal, it handles a wide range of sorting tasks instantly and privately. Combine it with Shuffle Lines for randomization or Remove Duplicate Lines for deduplication.