Compress PDF — Reduce PDF File Size Online for Free
Compress PDF Tool – Reduce File Size Online
Large PDF files are difficult to email, upload, or store. Our Compress PDF tool reduces your PDF file size by up to 80% while maintaining readability and visual quality. It works entirely in your browser — no software installation needed.
When to Compress a PDF
- Email attachments (Gmail has a 25MB limit)
- Uploading documents to government or university portals
- Saving storage space on your phone or computer
- Sharing PDFs via WhatsApp or messaging apps
Compression Levels Explained
Low compression gives the best quality with a modest size reduction. Medium compression balances quality and size. High and Very High modes give the smallest file size and are ideal for text-heavy documents.
How to Use
- Click "Choose File" and upload your PDF.
- Select a compression level: Low, Medium, High, or Very High.
- Click the "Compress PDF" button.
- Wait a few seconds while the file is compressed.
- Click "Download" to save the smaller PDF to your device.
Frequently Asked Questions
Typical reduction is 30% to 80% depending on the content. Image-heavy PDFs compress the most.
Our tool uses smart compression. At Low or Medium settings, quality is nearly identical to the original.
Yes. Files are automatically deleted after compression and are never stored or shared.
No. Please unlock the PDF first using our Unlock PDF tool, then compress it.
The tool works best with files up to 100MB.