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Optimize PDF

Compress PDF

Reduce image-heavy PDF size directly in your browser, with no upload.

This compression mode rasterizes each page into JPEG, which is best for scanned or image-heavy PDFs. For text-perfect structural optimization, use a resource-only compressor.

Finished files download automatically. No upload API is used.

100% local processing · no server upload

User guide

How to use Compress PDF

Reduce PDF size by locally re-rendering image-heavy pages at a selected quality level.

  1. 1

    Upload a PDF and inspect its original size.

  2. 2

    Choose extreme, recommended, or light compression.

  3. 3

    Start compression and keep the tab open while pages are rendered.

  4. 4

    Compare the result size and download the compressed file.

Best for

  • Email attachments
  • Upload portals with file-size limits

Important limitation

Image-based compression can reduce visual quality and may flatten interactive content; use the lightest level that meets your limit.

Frequently asked questions

Will text stay selectable?

Some compression modes rasterize pages, so selectable text can be flattened.

Which level should I use?

Recommended is the best starting point for most documents.

PDFPerch processes files locally unless this guide explicitly identifies a cloud-dependent feature. Always keep an original copy and verify critical output before submission, printing, signing, or accounting use.