Compress scanned PDF

Render each page as JPEG and rebuild the PDF. Choose resolution and quality, then compare actual file sizes.

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A compression method with a clear trade-off

Each page is rendered as JPEG and rebuilt into a PDF. Lower resolution and quality may save space but can reduce fine text, colour and detail.

This suits scans. Output text cannot be searched or selected; links and accessibility information are not preserved. Files are not guaranteed to shrink, and larger results are clearly labelled.

Good to know

One ordinary PDF up to 30 MB and 30 pages; output up to 60 MB.
Confirm that image-only pages are acceptable before processing. This is not lossless compression. Encrypted, form and signed files are unsupported.