Compress PDF Files Online

Make PDFs small enough to email by shrinking the photos inside them.

Compression level

Good balance for email and sharing.

Shrinks the photos inside your PDF (scans, brochures, slides). Text and vector graphics stay sharp and usually shrink little.

Compression runs in your browser. Your PDF is not uploaded.
Guide

How to compress a PDF

1

Add your PDF

Drop one PDF file onto the page.

2

Pick a level

Light keeps the best quality, Strong makes the smallest file.

3

Compress and download

See how much space you saved, then save the new PDF.

Frequently asked questions

Is my PDF uploaded to a server?

No. Compression runs in your browser, so the file stays on your device.

How does it make the PDF smaller?

It re-encodes the photos inside the PDF at a lower quality and size, then saves the file with a more compact structure. Text and vector graphics are not changed.

Why did my PDF not get smaller?

PDFs made mostly of text and shapes are already small, and some photos are already heavily compressed. Try the Strong level, or a PDF with scans or photos.

Which images can it shrink?

Standard JPEG photos and scans. Images in other formats, such as black-and-white scans or CMYK photos, are left as they are.

Will the text still be selectable?

Yes. Text is not touched, so it stays selectable and searchable.

Can I compress a password-protected PDF?

Not directly. Remove the password first, then add the file.

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