To sort and deduplicate lines of text, paste your list into a sorter, pick an order, and turn on the option to remove duplicate lines. You get a clean, ordered list back instantly. Here is how to do it and which options matter for messy data like emails, URLs, keywords, or log lines.
Sort and deduplicate lines in four steps
- Open the Line Sorter & Dedupe and paste your list, one item per line.
- Choose a sort order: alphabetical (A to Z), reverse (Z to A), or numeric for lists of numbers.
- Turn on remove duplicate lines to drop every repeated entry, keeping one of each.
- Optionally trim blank lines and copy the cleaned result.
Everything runs in your browser, so your list is never uploaded to a server. That matters when the data is a customer email export or anything else you would rather not send away.
Choosing the right sort order
The order you want depends on the data:
- Alphabetical (A to Z) is the default and works for names, emails, URLs, and keyword lists.
- Reverse (Z to A) flips that order, handy when the newest or last items should sit on top.
- Numeric sorts by value rather than by character, so 2 comes before 10. Plain alphabetical sorting would wrongly put 10 before 2, so reach for numeric whenever your lines are numbers, IDs, or prices.
Case sensitivity matters
Case-sensitive sorting treats Apple and apple as different lines, so all capitalized entries group separately from lowercase ones. Case-insensitive sorting ignores capitalization and interleaves them naturally.
The same choice affects deduplication. With case-insensitive matching, Example.com and example.com count as duplicates and only one survives. With case-sensitive matching they are kept as two distinct lines. For emails and domains, case-insensitive is usually what you want.
Removing duplicates and blank lines
Deduplication scans the list and keeps the first occurrence of each line, dropping the rest. Combine it with sorting and identical entries naturally sit next to each other before the extras are removed. Trimming blank lines clears out the empty rows that creep in when you copy from spreadsheets or chat logs, so the final list has no gaps.
A few common jobs this handles well:
- Cleaning keyword lists for SEO, where exports are full of repeats and stray blanks.
- Comparing sets, by sorting and deduping two lists so you can scan them side by side.
- Prepping data before importing into a database or spreadsheet that expects unique, ordered values.
For any of these, the Line Sorter & Dedupe does the whole pass in one step.
Related tools
- Find & Replace: swap or strip text patterns across every line before you sort.
- Diff Checker: compare two lists line by line to see exactly what changed.
- Whitespace Cleaner: strip stray spaces and tabs that break sorting and dedupe.
Paste your messy list, pick an order, flip on dedupe, and walk away with a clean set.