Will compressing reduce image quality?

Higher compression trades some image quality for a smaller file size; low compression keeps quality closer to the original with a smaller size reduction.

How much smaller will my file get?

It depends on the content — PDFs with lots of high-resolution images shrink the most; text-only PDFs are already small and may barely change.

Is compression reversible?

No — image compression is lossy, so keep your original file if you need the full-quality version later.

Optimize

Compress PDF

Shrink your PDF file size while optimizing for the best possible quality.

Drag & drop a PDF here

Choose a compression level and shrink your file size

.PDF · Max 50 MB per file

How to use Compress PDF

1
Upload the PDF you want to shrink.
2
Pick a compression level — low, medium or high.
3
Click "Compress PDF" and wait a few seconds.
4
Download the smaller file and compare the size saved.

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