Remove extra spaces and blank lines

Text copied from PDFs, web pages, Word documents and spreadsheets carries whitespace you cannot see: double spaces, trailing spaces, runs of blank lines, tabs, non-breaking spaces (U+00A0) and zero-width characters (U+200B, U+FEFF) that break searches, form validation and code. This cleaner removes them in one pass, with each step under your control.

Trimming can remove spaces at both ends of each line, or only trailing spaces so code indentation survives. Collapsing turns runs of spaces and tabs inside a line into one space but leaves the indentation at the start of the line alone. Blank lines can be collapsed to a single empty line (keeping paragraphs) or removed entirely. Tab conversion is column-aware: tabs expand to the next tab stop rather than a fixed number of spaces, and "leading spaces to tabs" re-indents with tabs without touching alignment inside the line.

Unicode cleanup replaces non-breaking and other special spaces with a normal space and removes zero-width spaces and byte-order marks. Zero-width joiners and non-joiners are kept inside words, where Persian text and emoji sequences need them, and removed only at word edges.