Line Sorter and Deduplicator - Clean Up Text in Seconds

Whether you are tidying a list of URLs, cleaning log output, or preparing data for import, manually sorting and deduplicating lines wastes time. The Line Sorter and Deduplicator handles sorting, removing duplicates, trimming whitespace, shuffling, and filtering all in one place.

Features

• Alphabetical sorting - Sort lines in ascending or descending order with locale-aware comparison
• Numeric sorting - Correctly sort lines that begin with numbers so that 2 comes before 10
• Deduplication - Remove duplicate lines with a single click, keeping either the first or last occurrence
• Whitespace trimming - Strip leading and trailing spaces and tabs from every line
• Empty line removal - Clean up blank lines scattered throughout your text
• Line shuffling - Randomize the order of lines for test data generation or randomized lists
• Regex filtering - Keep or remove lines matching a regular expression pattern
• Case conversion - Optionally convert all lines to lowercase or uppercase before sorting
• Line count stats - See total lines, unique lines, and duplicate count at a glance

How to Use

1. Paste your text into the input area.
2. Select the operations you want to apply: sort, deduplicate, trim, or filter.
3. Configure sort direction and any additional options like case sensitivity or numeric mode.
4. Click Process to see the cleaned result in the output panel.
5. Copy the output or download it as a text file.

Use Cases

• Cleaning up exported CSV columns or lists of email addresses before importing into another system
• Removing duplicate entries from log files or error output
• Alphabetizing glossary terms, word lists, or configuration entries
• Generating shuffled test data from an ordered list

FAQ

Can I combine multiple operations at once?

Yes. You can sort, deduplicate, and trim all in a single pass. Operations are applied in a logical order: trim first, then filter, then deduplicate, and finally sort.

Does the tool support case-insensitive deduplication?

Yes. Enable the case-insensitive option and lines like "Hello" and "hello" will be treated as duplicates, with one removed according to your preference.

Is there a size limit on the input?

The tool handles inputs with tens of thousands of lines comfortably in the browser. For extremely large datasets, processing stays local and nothing is uploaded to a server.