Optimise PDF
Compress a PDF
Make image-based PDFs smaller for sharing or storage.
Choose your file
Best for scanned and image-heavy PDFs up to 120 MB.
Compression takes place in this browser tab. Your PDF is not uploaded.
How to use it
Three clear steps
- 1
Choose an image-based or scanned PDF.
- 2
Pick Balanced or Smaller file.
- 3
Select Compress PDF and compare the result before replacing anything.
Options and output
What this tool does
- Balanced keeps more image detail.
- Smaller file uses lower image resolution and stronger JPEG compression.
- Compression recreates pages as images, so forms, links and selectable text may be lost.
File privacy
Processed on your device
Compression takes place in this browser tab. Your PDF is not uploaded.
Troubleshooting
If the file will not process
- A text-only digital PDF may not become smaller with image-based compression.
- Keep the original if form fields, links or accessibility tags matter.
Useful answers
Common questions
Why can the compressed PDF be larger?
Already-optimised digital PDFs can be smaller than a newly rendered image version.
Does compression keep searchable text?
No. This local first version flattens each page to an image and states that before processing.