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Developer ToolPopular PDF Tool

Compress PDF

Reduce image-heavy and scanned PDF file sizes locally, with honest savings and no document uploads.

No uploadsReal size comparisonUp to 100 pages

Best Results

Scans, photos, presentations, and image-heavy PDFs compress best. Text-only PDFs may already be compact.

Smaller documents, private processing

Reduce large scanned documents before email, storage, or sharing. If recompression would increase the size, the tool safely retains your original PDF instead.

What is Compress PDF?

Compress PDF reduces the storage and transfer size of PDF documents, especially scans, presentations, and image-heavy files. It helps when an attachment exceeds an email, portal, or form upload limit.

How to use Compress PDF

  1. 1.Choose the PDF whose file size you want to reduce.
  2. 2.Select balanced compression for readability or stronger compression for a smaller result.
  3. 3.Start processing and compare the original and compressed file sizes.
  4. 4.Open a sample page to check quality, then download the optimized PDF.

Key features

  • ✓Compression presets balance visual quality against file-size savings.
  • ✓Before-and-after size reporting shows the actual reduction achieved.
  • ✓Page rendering optimization is most effective on photographic or scanned PDFs.
  • ✓Browser-based handling avoids sending ordinary documents to a conversion queue.

Common use cases

  • Shrink a scanned application before uploading it to a portal.
  • Reduce a slide deck so it can be sent by email.
  • Optimize downloadable reports for mobile visitors.
  • Save storage when archiving image-heavy PDF receipts.

Frequently asked questions

Why did my PDF only become slightly smaller?

Text-only PDFs and files that already contain optimized images may have little redundant data left to remove.

Does PDF compression make text blurry?

Selectable text usually remains sharp, while embedded images may lose detail. Use balanced mode and inspect important pages before sharing.

Can I compress a signed PDF?

Reprocessing may invalidate a digital signature. Keep the signed original and verify the result before relying on it.

What compression level should I choose?

Begin with balanced compression. Use stronger compression only when meeting a strict size limit is more important than image detail.

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