PDF Size Guide| PDF Size Guide
Understand file size, upload limits and the reduction percentage required before trying to compress a PDF.
PDF Size Calculator
Enter your current PDF size and the maximum allowed size. Optionally select a PDF to read its size locally.
Current File Size
Upload Limit
Required Reduction
How to use the result
- Check thefile sizeof your current PDF.
- Confirm theupload limitof the destination website or recipient.
- Use the calculated percentage to estimate how much smaller the PDF needs to become.
- TryCompress PDFand then inspect the output quality.
Why are some PDFs so large?
Page count is not the only factor. A five-page file with high-resolution scans can be larger than a fifty-page text PDF.
Quality check after compression
- Open the compressed PDF and zoom to 100% and 200% to check important pages.
- Confirm that small text, numbers and signatures remain readable.
- Inspect charts, images and tables, especially before printing.
- Check that hyperlinks, page order and document structure are still correct.
- Always keep the original filebefore compressing or converting.
Sending and upload limits
Gmail:Attachment limits may vary between personal Gmail accounts, Google Workspace accounts and organization policies. Check the limit that applies to your account.
Universities and government services:There is no universal limit. Each application portal may set its own rules for file type and size.
WhatsApp:We do not publish an unverified fixed limit. Check the current limit in WhatsApp or its official help center before sending your document.