Paste your text, and the tool collapses any run of consecutive blank lines down to a single blank line.
Any run of two or more consecutive blank lines is reduced to exactly one blank line, so single spacing between blocks is preserved.
No. It keeps a single blank line between blocks so structure and readability are maintained; it only removes the excess.
It normalizes line endings to LF while collapsing blanks, so the output is consistent across editors and platforms.