Compress a PDF to reduce file size
To compress a PDF online : upload your file, choose the compression level (low, medium, high), then start optimization.
Steps (show)
- Upload your PDF file.
- Select compression level.
- Click “Compress PDF”.
- When done, click “Download”.
Choose a PDF file or drag it here
Reduce PDF size without losing quality
Difyzi PDF compressor reduces file weight while keeping readable quality. Free, no signup.
Frequently asked questions
High (300 dpi) for print quality. Medium (150 dpi) for best balance. Low (72 dpi) for smallest size.
It depends on the file content. Typical reduction is between 30% and 70% for image-heavy PDFs.
72 dpi is screen-optimized. 150 dpi is balanced. 300 dpi keeps max quality for print.
Currently one file at a time for better reliability.
Files are processed temporarily on our secure servers, then automatically removed.