Line Counter

A line, for this tool, is whatever sits between two newline characters — the same definition a text editor uses when it numbers lines down the left margin. Pasting text splits it on those newlines and reports three counts: the total number of lines, how many of those contain at least one non-whitespace character, and how many are effectively empty (blank, or containing only spaces or tabs).

The distinction between total and non-empty lines is often the more useful number in practice. A file with 500 total lines but only 300 non-empty ones tells you something different than a flat 500 — it might mean generous spacing in a document, blank separator lines in a config file, or padding rows in a data export. Line count alone can also be misleading for code review or diff-size estimates if a file is full of blank lines used for visual grouping.

This gets used for quick sanity checks before pasting into a system with a line limit, verifying a script's output matches an expected row count, or estimating how much a text file has been padded with blank lines versus actual content.

A line is the text between two newline characters, the same definition text editors use for line numbers. A final newline at the end of a file does not create an extra visible line in most editors, but it can add an empty entry when splitting.

Windows files use CRLF line endings and Unix files use LF. Both are treated as one line break, so counts match across systems.