Compress PDF Online Free
Reduce PDF size for email, forms, portals, and document sharing. Choose a compression mode or target KB size, then download a smaller PDF from your browser.
- Target KB option
- Shows final file size
- No upload required
Compress PDF
Reduce PDF size fast for email, forms, and portal uploads.
Sign in to save input and output files to your backend dashboard.
Strong and extreme modes rebuild pages more aggressively. Exact portal limits are not guaranteed; check the final size before upload.
Compress PDF Online Free: quick guide
Reduce PDF size for email, forms, portals, and document sharing. Choose a compression mode or target KB size, then download a smaller PDF from your browser. GlobePDF runs this workflow in your browser, so your files stay on your device instead of being uploaded to a server. Use it when you want to make a PDF or image smaller for upload, email, or storage, then verify the downloaded result before sending it anywhere.
How to use it
- Upload the PDF you want to make smaller with Compress PDF.
- Choose the compression setting that fits your upload limit.
- Download the compressed PDF and compare the final file size before submitting it.
Best for
- Email attachments
- Portal upload limits
- Reducing storage size without installing software
Before you submit
- Compare the final size against the exact KB or MB limit.
- Open the downloaded file once before submitting it.
- Keep the original file until the result is accepted.
Best settings for PDF compression
Start with recommended compression for readable digital PDFs. Use stronger compression for scans, certificates, and image-heavy documents where file size matters more than perfect image quality.
After downloading, compare the output size with the rule from the form, email provider, school, bank, or government portal. Exact-size compression depends on the original images, fonts, and page content.
If the PDF is still too large
Run the file again with a stronger mode, remove unnecessary pages, or compress scanned images before converting them into a PDF. For strict limits, open the downloaded PDF and confirm that names, numbers, stamps, and signatures are still readable.
Keep the original PDF until the receiving website accepts the compressed copy. That gives you a clean fallback if a portal rejects the file or asks for a different size.
Questions about Compress PDF Online Free
Can I compress a PDF to an exact size?
You can enter a target size, but exact results depend on the images, fonts, and pages inside the PDF. Always check the final size before upload.
Will compression reduce PDF quality?
Recommended mode keeps readability first. Stronger modes can make image-heavy PDFs smaller, so review the downloaded file before submitting it.