Compress PDF Online Free
Reduce PDF size online and make PDFs smaller without uploading files.
Drop files here or click to upload
Max 100 MB
Compress PDF online free, reduce PDF size online, and make PDF smaller in your browser without registration or uploads.
Last reviewed: June 2026
How to use this tool
- 1Choose the PDF you want to compress.
- 2Select the compression level that matches your quality needs.
- 3Click Process to compress the PDF file locally.
- 4Download the compressed PDF and compare it with the original.
Common use cases
- Make a PDF small enough for email attachments.
- Reduce scanned document size before uploading to a portal.
- Compress PDF to 200KB online when your target portal accepts a smaller final file.
Technical notes
- PDFs with many images usually compress more than text-only PDFs.
- Higher compression can reduce image detail, while lower settings help compress PDF without losing quality.
- Text and page structure are preserved when the source PDF supports it.
Private by design
This tool runs in your browser. Your file is not uploaded to our server while using the tool.
Limitations
- Some already-optimized PDFs may not shrink much.
- This tool cannot guarantee a specific final file size.
- Check image-heavy or print-ready PDFs before using them for production work.
Frequently Asked Questions
How much can I reduce the file size?
Typically 20-80% depending on the content. PDFs with many images compress more.
Can I compress PDF without losing quality?
Use low or medium compression to keep text sharp and preserve image quality as much as possible.
Can I compress PDF online free no limit?
The tool is free and does not require registration. Practical limits depend on browser memory and file size.
Can I compress password-protected PDFs?
No. You need to remove the password first before compressing.
Is my file uploaded to a server?
No. Compression happens entirely in your browser. Your files stay on your device.