Compress PDF

Large PDFs are hard to email and slow to upload. This tool reduces the size of a PDF by optimising its images and fonts, while text stays sharp and searchable.

PDFs with many photos or scanned pages usually shrink the most. If your PDF is already optimised, the tool tells you and returns the original instead of a bigger file.

How to compress a PDF

1. Upload your PDF.
2. Choose Light, Recommended or Strong compression.
3. Click Convert. The result shows how much smaller the file is.

PDF compressor features

• Three levels: Light (print quality), Recommended (screen quality) and Strong (smallest file).
• Text and vector graphics stay sharp; mainly images are optimised.
• Duplicate images are detected and stored once.
• Never makes your file bigger: you get the original back if it cannot be reduced.

Which compression level should I use?

Light keeps print quality and is good for documents you will print. Recommended is ideal for reading on screen and sharing by email. Strong gives the smallest file, best for uploads with strict size limits; photos will look softer.

Frequently asked questions

How much smaller will my PDF be?

PDFs with photos or scans often shrink a lot. PDFs that contain mostly text are already small and shrink less.

Will the text still be searchable?

Yes. Compression optimises images; text remains text.

Can I compress a password-protected PDF?

Unlock it first with Unlock PDF, then compress it.

What is the size limit?

Up to 500 MB and 500 pages.

Privacy, limits and file safety

Your documents are processed on our own server, are never shared with anyone and are deleted automatically 60 minutes after processing. Passwords you enter are used once and never stored. Files can be up to 500 MB. No sign-up, no watermark and no software to install: it works in any modern browser on Windows, Mac, Android and iPhone.

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