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PDF Compressor for Scanned Files

Raster-compress scanned PDFs with JPG quality settings and compare output size.

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REAL-WORLD EXAMPLE

Try scanned PDF compression

Try: Choose the built-in sample PDF (or your own), set Medium resolution and 65% image quality, then Compress & compare.

Expected behavior: Review the original-versus-output size before downloading a PDF or batch ZIP.

This method rasterizes PDF pages and can remove searchable text and links.

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About the PDF Compressor for Scanned Files

Reduce file size of scanned or image-heavy PDFs by converting each page to a JPEG image with adjustable quality and resolution.

Formula or method

The browser rasterizes PDF pages, encodes each rendered page as JPEG and reassembles a new PDF. The output size is compared with the original.

Worked example

Try reducing a photo-heavy PDF at medium resolution and 65% JPEG quality, then check the output size and image quality.

How to use the tool

  1. Choose one or more PDF files, or open the sample PDF to test the workflow.
  2. Adjust rendering resolution and JPEG image quality; lower settings can shrink scans but may blur details.
  3. Select Compress & compare, inspect the original/output size and a few pages, then download the PDFs or ZIP.

Common uses

Everyday documents, school and office tasks, productivity and file conversion.

When this tool is useful

Reduce oversized scanned documents before emailing or uploading them, while checking whether pages remain readable.

What to check before relying on the result

This tool rebuilds pages as images. Searchable text, hyperlinks, form fields and signatures may be lost; keep your original PDF.

Assumptions and limitations

Rasterization removes selectable text, links, forms, vectors, bookmarks and digital signatures. Some PDFs become larger. Do not use for legal, archival or accessible PDFs. Limit 20 pages, 20 MB.

Frequently asked questions

Does PDF compression preserve text and forms?

No, this particular raster compression changes each page to an image and is best for scans.

Can I make a scanned PDF smaller without changing its appearance?

There is a trade-off: image-based compression can reduce size, but fine text and graphics may become less legible. Compare pages before sending.

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Privacy and support

Your inputs are processed locally in your browser. ToolMosaic does not upload or store the values you enter in this tool. Our tools are free, and we appreciate your support.