Find Duplicate Lines
List every line that appears more than once, with how many times each one occurs.
Runs entirely in your browser.
Find Duplicate Lines in Text
About Find Duplicate Lines
This is the inspection half of deduplication: instead of cleaning the list, it reports which lines repeat and how often. Use it to audit a list before you change it, or to find the accidental repeats in a set of IDs, emails, or filenames.
Lines are reported in the order they first appear. With Show occurrence counts enabled each line is prefixed with its count, which makes the worst offenders easy to spot.
Other Line Tools
- Sort Lines — alphabetically, numerically, or by length
- Remove Duplicate Lines — keep the first of each
- Shuffle Lines — randomize the order
- Reverse Line Order — flip the list upside down
