StysloDoc

If the tool does not start

Your browser does the compression. It needs capabilities that older browser versions may not provide.

Things to try

  1. Check that JavaScript is enabled for this site.
  2. Update to the newest browser version available for your device. If that is not possible, try another device you trust.
  3. Close tabs you do not need. Processing a large PDF can use more memory than your device has, even when the file is within the size and page limits.
  4. Check that the original file opens correctly and that the PDF is not password protected.

Chrome 49 / Firefox 52: Scanned PDF copies: up to 20 MiB and 10 pages. JPG and PNG: up to 100 MiB. HEIC is unavailable here. Some PDF features, including embedded color profiles, are not supported. Your document stays on this device. JPEG2000 scans need Firefox 52 or a newer browser. You can save the PDF or download all its pages as JPG in a ZIP with one click. PDF preview and individual page downloads from preview are unavailable.

An older computer is not the same as an older browser

A device’s age alone does not determine whether compression works. Browser version, available memory and operating-system updates also matter. Long PDFs can take considerably more time than a single image.

You can read the guides and privacy information without running the compression tool.

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