Scanned PDF向けにPDFを圧縮する方法

Scanned PDF files are often very large due to high-resolution images. Here is how to compress a scanned PDF while keeping the text readable.

Why scanned PDFs are so large

Each scanned page is stored as an image, which increases file size significantly compared to text-based PDFs.

The best solution: optimize scanned images

Smart compression reduces image resolution and removes unnecessary data while preserving readability and document clarity.

PDFを圧縮

How to compress a scanned PDF

  1. Open the Compress PDF tool
  2. Upload your scanned PDF file
  3. Apply compression settings
  4. Download the reduced PDF file

スキャンPDFが大きい理由

Scanned documents contain high-resolution images that increase file size significantly.

How to reduce image-heavy PDF files

Image optimization and downscaling reduce size while keeping text readable.

OCR and compression

Applying OCR can make scanned PDFs searchable without increasing size.

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