How much smaller will my PDF get?

PDFs with embedded images typically shrink 15–50%. Text-only PDFs compress less because there is little redundant data to optimise.

Which compression level should I choose?

Low for minimal change, Medium (recommended) for email and uploads, High for the smallest possible file when slight quality loss is acceptable.

Is compressing PDFs private?

Yes. Compression runs 100% in your browser — your document never leaves your device.

Why is my PDF so large?

Usually unoptimised embedded images, embedded fonts, or redundant metadata. The compressor removes redundancy and optimises content streams to shrink the file.

How much smaller will my PDF get?

PDFs with embedded images typically shrink 15–50%. Text-only PDFs compress less because there is little redundant data to optimise.

Which compression level should I choose?

Low for minimal change, Medium (recommended) for email and uploads, High for the smallest possible file when slight quality loss is acceptable.

Is compressing PDFs private?

Yes. Compression runs 100% in your browser — your document never leaves your device.

Why is my PDF so large?

Usually unoptimised embedded images, embedded fonts, or redundant metadata. The compressor removes redundancy and optimises content streams to shrink the file.

Compress PDF — Free Online

Reduce your PDF file size. Choose compression level.

Drop your file here

or click to browse · max 200 MB per file

Choose File

Tips

→Medium is best for most documents.
→Text-heavy PDFs compress less than image-heavy ones.
→Processing happens in your browser — files stay private.

Other tools

Frequently asked questions

Quick answers about compress pdf — free, private, no sign-up.

Open the Compress PDF tool, upload your file, and choose Low, Medium or High compression. Medium is best for most documents — visible quality stays intact while size drops sharply.

How to use Compress PDF

Done in under a minute — right in your browser.

1
Open the Compress PDF tool
Go to yumpdf.com/compress-pdf in any browser.
2
Select your PDF
Click Select file or drag and drop your PDF.
3
Choose a compression level
Pick Low, Medium (recommended) or High compression.
4
Download the smaller PDF
Save your compressed file instantly.