Count Duplicate Lines
Count how often each line appears.
Outputs count, tab, then the line, sorted by count descending. Two identical lines show count 2. Unlike Remove Duplicate Lines this keeps the tally.
What Count Duplicate Lines does
Outputs count, tab, then the line, sorted by count descending. Two identical lines show count 2. Unlike Remove Duplicate Lines this keeps the tally.
The interactive controls for Count Duplicate Lines load after this article so crawlers still read the instructions. Path /count-duplicate-lines is the canonical address. Work happens on this device; Tool-You does not take a copy of the file or pasted text for Count Duplicate Lines.
How to use Count Duplicate Lines
- Keep this tab on Count Duplicate Lines (/count-duplicate-lines). Pasting into the wrong Text tool (for example Remove Duplicate Lines) changes the job.
- Paste or type the input Count Duplicate Lines expects. Path hint: count duplicate lines. Count how often each line appears.
- Apply the Count Duplicate Lines action only. Word Frequency is a different transform (Count how often each word appears.). Outputs count, tab, then the line, sorted by count descending. Two identical lines show count 2. Unlike Remove Duplicate Lines this keeps the tally.
- Copy the output of Count Duplicate Lines if you need it elsewhere. Size/complexity still follows: Exact whole-line matches. Max 200,000 characters. Blank lines count.
- If the text job is actually Keep the first copy of each line, with ignore options., leave Count Duplicate Lines and open Remove Duplicate Lines.
When not to use Count Duplicate Lines
Skip Count Duplicate Lines when a neighbor tool matches better — start with Remove Duplicate Lines or Word Frequency — or when the description already warns the job will fail. In the tool’s own words: Outputs count, tab, then the line, sorted by count descending. Two identical lines show count 2. Unlike Remove Duplicate Lines this keeps the tally.
Questions about Count Duplicate Lines
- What does Count Duplicate Lines do that other Text pages on this site do not?
- Outputs count, tab, then the line, sorted by count descending. Two identical lines show count 2. Unlike Remove Duplicate Lines this keeps the tally. Short version: Count how often each line appears.
- Does Count Duplicate Lines upload my file or text to Tool-You servers?
- No. Count Duplicate Lines runs in this browser tab. Files stay on the device. Limit note: Exact whole-line matches. Max 200,000 characters. Blank lines count.
- Should I use Remove Duplicate Lines instead of Count Duplicate Lines?
- Use Count Duplicate Lines when you need Count how often each line appears. Use Remove Duplicate Lines when you need Keep the first copy of each line, with ignore options. They share a category (Text) but not the same job.
- What are the limits of Count Duplicate Lines?
- Exact whole-line matches. Max 200,000 characters. Blank lines count. Also: Outputs count, tab, then the line, sorted by count descending. Two identical lines show count 2. Unlike Remove Duplicate Lines this keeps the tally.