ASCII Art Margin Trimmer

Trim empty outer rows and common left/right whitespace while preserving the internal drawing.

ASCII art with outer whitespace

Runs locally in your browser. Image tools use the File API and Canvas; images are not uploaded.

Margin trimming handles tabs without cutting wide glyphs

Tabs are expanded before shared outer margins are removed. Internal blank rows remain intact and the review exposes line-ending and trailing-space changes.