Compress PDF Online
Reduce the file size of scanned and image-heavy PDF documents directly in your browser.
Best for scanned and image-heavy PDFs. This method rebuilds every page as a JPEG image, so selectable text, links and form fields will no longer remain interactive.
Free Online PDF Compressor
Reduce the file size of scanned and image-heavy PDF documents directly from your browser. A smaller PDF can be easier to attach to email, upload to websites, store online or share through services that impose file-size limits.
How to compress a PDF
- Select the PDF file you want to reduce.
- Choose the available quality level that fits your needs.
- Click Compress PDF.
- Wait for the document to be rebuilt.
- Download the compressed PDF and compare its size and visual quality.
Which PDFs benefit most?
This compressor is most useful for scanned documents and PDFs containing large page images. Image-heavy files often provide more room for size reduction than simple text documents.
Quality and file size
Compression involves a trade-off between visual quality and file size. A stronger compression setting can create a smaller document, while a higher-quality setting can preserve more image detail. Choose according to how the PDF will be viewed or shared.
Important limitation
This tool rebuilds PDF pages using compressed page images. As a result, selectable text, hyperlinks, form fields and some other interactive elements can be flattened. Keep the original document if you may need those features later.
Frequently asked questions
Why is my compressed PDF still large?
The result depends on the original document, page count, image complexity and selected quality.
Is this suitable for scanned PDFs?
Yes. Scanned and image-heavy documents are the main use case for this compressor.
Should I keep the original?
Yes. Keep the original PDF when selectable text or interactive features are important.