Line Sorter Online
Sort lines and remove duplicates
How to Use Sort & Deduplicate
- 1
Paste your text
Enter lines of text to sort.
- 2
Choose sort options
Select alphabetical, numeric, or reverse order. Toggle deduplication and case sensitivity.
- 3
Copy result
The sorted output appears instantly — click copy to use it.
What Is Sort & Deduplicate
Sort lines of text alphabetically, numerically, or by line length, and remove duplicate lines with one click. Ideal for cleaning up keyword lists, sorting log output, deduplicating email lists, and organizing CSV rows. Supports ascending and descending order, case-sensitive and case-insensitive sorting, and optional trimming of leading and trailing whitespace. All processing happens instantly in your browser — your text never leaves your device. No sign-up or installation required.
Why Use Sort & Deduplicate
- One-click deduplication — remove repeated lines instantly without manually scanning a long list.
- Multiple sort modes — alphabetical, reverse alphabetical, numeric, and by line length.
- Case-insensitive option treats 'Apple' and 'apple' as the same word when deduplicating or sorting.
- Handles lists of any size — sort hundreds or thousands of lines in milliseconds.
- Completely private — your text stays in your browser. Paste email lists or internal data safely.
Frequently Asked Questions
Is my data safe?
Is sorting case-sensitive?
How does numeric sorting work?
Does deduplication preserve the original order of first occurrences?
Can I sort by a specific column in CSV data?
Learn more
Sort & Deduplicate Use Cases
Keyword list management
Sort and deduplicate SEO keyword lists before importing them into Google Ads, SEMrush, or other tools that charge by unique keyword.
Email list cleanup
Remove duplicate email addresses from a mailing list export before importing into an email marketing platform.
Code list organization
Sort lists of import statements, CSS class names, enum values, or config keys alphabetically for cleaner, more maintainable code.
Log file analysis
Sort log lines by timestamp or severity, and deduplicate repeated error messages to identify the unique errors that need attention.
Tips & Best Practices
- 💡Trim whitespace before sorting to avoid treating ' apple' and 'apple' as different lines due to leading spaces.
- 💡For numeric sorting, ensure each line contains only a number — lines with mixed text and numbers will sort alphabetically.
- 💡If deduplication removes lines you wanted to keep, check case sensitivity — 'Apple' and 'APPLE' may be treated as the same line.
- 💡Reverse sort is useful for finding the longest or most recently added items at the top of a list.
How It Compares
Text editors like VS Code support sorting selected lines via a built-in command (Sort Lines Ascending/Descending), but do not offer deduplication or numeric sort without an extension. Spreadsheet tools like Excel can sort and deduplicate but require importing the data as a structured table first. This tool is faster for plain-text lists — just paste, configure, and copy the result.