How to compress a PDF online
- Upload the PDF file you want to reduce.
- Choose the compression level and optional settings.
- Run the compress PDF tool.
- Download the smaller optimized PDF.
Why use our Compress PDF tool?
- Make PDFs smaller for email attachments, web forms, and upload portals.
- Use an online PDF compressor without installing software.
- Choose settings based on the balance you need between size and quality.
- Compress reports, invoices, scanned files, contracts, and business documents.
Common compress PDF use cases
- Reduce PDF size before uploading to job, school, visa, or loan forms.
- Make scanned documents easier to send by email.
- Compress merged reports, contracts, or invoice packets.
- Prepare PDFs for browser-based workflows and file-size limits.
For a fuller workflow, continue with Merge PDF , Split PDF , or PDF to JPG .
compress PDF FAQs
How do I reduce the size of a PDF?
Upload your PDF, choose a compression level, process the file, and download the smaller PDF.
Can I compress a PDF for email?
Yes. Compress PDF is useful when a document is too large for an email attachment.
Will compression change my PDF quality?
Higher compression may reduce quality. Choose a level that fits the file size and readability you need.
Can I compress scanned PDFs?
Yes. Scanned PDFs often benefit from compression because image-heavy pages can be large.
What should I do before compressing a PDF?
Remove unwanted pages or merge files first if you need the final compressed document to include only the right pages.