What is the difference between empty and blank lines?

An empty line has zero characters. A blank line contains only whitespace (spaces or tabs) and may look empty but is not. The counter reports both separately.

Does a trailing newline add an extra line?

No — a single trailing newline at the very end of the text is ignored so the count matches what most editors show.

Is my text uploaded anywhere?

No — all counting happens locally in your browser and nothing is sent to a server.

Line Counter

Count total, non-empty, blank and unique lines.

Line counter

Paste any text and instantly see how many total lines, non-empty lines, empty lines, blank (whitespace-only) lines and unique lines it has, plus the length of the longest line.

It handles Windows and Unix line endings and ignores a single trailing newline, so the count matches your editor. Everything runs in your browser — nothing is uploaded.