Compress PDF
Shrink a PDF with light optimization or strong image compression.
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What is Compress PDF?
Compress PDF reduces file size so it is easier to email or upload. There are two levels: Light optimizes the file structure and strips metadata while keeping text intact, and Strong turns pages into compressed images for a much smaller file.
When to use it
- Shrink a file to fit an email attachment limit.
- Prepare documents for government or job portals.
- Save storage on scanned files.
How to use Compress PDF
- Add your file using the box above.
- Set the options if the tool has any.
- Press the button and download the result.
Tips for the best result
- Try Light first; it keeps text selectable and searchable.
- Strong suits scanned files, but text will no longer be selectable afterwards.
- If a file is already optimized we return it unchanged instead of making it bigger.
Frequently asked questions
Is Compress PDF free?
Yes. It is completely free, with no signup and no watermark.
Are my files uploaded to a server?
No. Processing happens in your browser, so your documents stay on your device.
Is there a file size limit?
There is no fixed limit. Very large files depend on your device memory, so close other tabs if a big file is slow.
How much smaller will it get?
It depends on the file. Scans and image-heavy files shrink a lot with Strong; text-based files change only a little.
Does quality suffer?
Light does not alter content. Strong lowers image quality slightly in exchange for a smaller size.