Line counter.
Count total, non-empty, blank, and unique lines. See longest and shortest. Sort A→Z, by length, or remove duplicates — all in the browser.
Tool 15CountersLive100% local
§ Lines in, stats out
Quick triage.
Handy for log files, CSV cleanups, and verifying that a diff really changed what you expected.
Does a trailing newline count as a line?
Yes. A file ending in \n has one extra empty line; that is the same behaviour as `wc -l` on many systems.
How are "unique" lines determined?
Exact string equality, including leading/trailing whitespace. If you want fuzzy dedupe, trim the lines first.
Can it handle huge log files?
Pastes up to a few megabytes are fine. Beyond that, the main thread starts to hitch while sorting — consider chunking offline.