Private · in-browser · no upload

Invert colors

Invert page colors for high-contrast print or night reading prep.

Drop a PDF

or tap to browse

Processed in your browser — files never uploaded

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Shrink PDF size by downsampling embedded images. Honest about limits.

Best-effort repair by re-writing the PDF structure with pdf-lib.

Convert pages to grayscale via canvas re-embed — print prep.

Fit every page onto A4, Letter, or Legal. Stays in the browser — pages are scaled, not uploaded.