Compress PDF

About this tool

Reduce the size of any PDF file by compressing embedded images in-place. PDF Studio finds every image inside your PDF and re-encodes it at the selected JPEG quality — preserving all text, fonts, bookmarks, and document structure.

Key features

• Three compression levels

  Extreme (30% quality) for email, Recommended (50%) for sharing, Low (70%) for near-lossless output.

• Fast processing

  Each page is rendered and re-encoded server-side in seconds.

• No data retention

  Files are deleted from our servers immediately after processing.

• Free to use

  No subscription, no account — just upload and compress.

Frequently asked questions

How much will my PDF shrink?

It depends on how many images the PDF contains and their original size. PDFs with many high-resolution images can shrink by 50–80%. Text-only PDFs may barely shrink since only images are compressed.

Will text and bookmarks be preserved?

Yes — completely. Only the embedded images inside the PDF are modified. All text, fonts, links, bookmarks, and document structure remain fully intact.

What is the difference between the compression levels?

Extreme uses 30% JPEG quality — smallest file, noticeable image quality loss. Recommended uses 50% — good balance for sharing. Low uses 70% — minimal loss, closest to original quality.

Does this work on text-only PDFs?

Yes, but with little to no effect. The tool only compresses embedded image resources. If the PDF has no images, the output size will be nearly identical to the input.