Compress PDF Online
Reduce scanned and image-heavy PDF file sizes for email, online forms, and easier sharing. Choose your preferred balance of size and clarity—no signup required.
Select one PDF file
PDF only · Maximum 25 MB · Files remain on your device
About PDF Compressor
Reduce the file size of scanned and image-heavy PDF documents directly in your browser. Choose a compression level based on whether you prefer the smallest file or sharper page quality.
How to use
- Choose a PDF file up to 25 MB.
- Select Maximum, Balanced, or Best Quality compression.
- Click Compress PDF and wait for processing to finish.
- Download the compressed PDF and review the size reduction.
Benefits
- Make PDF files easier to email and upload.
- Choose the balance between smaller size and clearer pages.
- Process files privately in your browser.
- Keep the original file when compression would make it larger.
Frequently Asked Questions
Is this tool free?
Yes. All tools on ConvertGeine are free to use.
Are my files uploaded?
Your files stay on your device unless a tool clearly states otherwise.
Does it work on mobile?
Yes. ConvertGeine works on desktop, tablet and mobile devices.
Compress a PDF for email or online uploads
Large PDF attachments are commonly caused by scanned pages and high-resolution images. Compressing those pages can make a document easier to email or submit to a portal with a file-size limit. ConvertGeine offers three levels so you can prioritize the smallest download or retain sharper page images.
Which compression level should you choose?
Use Maximum compression when meeting a strict upload limit is most important. Balanced is a sensible starting point for most scanned documents. Best Quality creates clearer page images but may produce a larger result. Always open the downloaded PDF and check small text, signatures, and identification details before submitting an important document.
What happens to text and images?
This compressor rebuilds each page as a compressed image. That approach works especially well for scans and photo-heavy PDFs, but selectable text and interactive elements may be flattened. Keep your original file as a backup. For more guidance, read our PDF compression guide. If you need to reorganize documents first, use the Merge PDF tool before compressing the finished file.