Attachments
Where possible, PKB displays attachments inline with the option to open full screen or download. If it is not possible to view a particular attachment within PKB, it will be available to download. For more information on our security when uploading attachments, please click here.
What are the size limits of attachments?
Audio (1 GB)
Plans (20 MB)
Messages (10 GB for the first message in a thread, 100 MB for replies in a message thread)
Files (10 GB)
Genetics (1 GB)
Imaging (1 GB)
Journal (1 GB)
Medications (20 MB - professionals only)
Tests (20 MB)
Documents
The following types of files can be viewed while in PKB:
Images: jpeg, jpg, png, gif
PDF
Microsoft Word documents: these are converted to PDF
You can upload most file types into a PKB record, but executable files such as .exe or similar will be blocked. If we are unable to show the document type inline, we will give the user a download link instead so they can open them locally.
For mobile devices, PDF documents will either be viewable within the browser or available to download depending on the type of document & device.
Known issue: Viewing PDF documents on iPhones running iOS 26.5
We are currently investigating an issue affecting PDF zoom on iPhones running iOS 26.5.
If you're using this version of iOS and your PDF document appears blurry after zooming, please use the + and ā buttons in the PDF viewer to zoom in and out. This method reliably refreshes the document and removes the blur.
Using the pinch-to-zoom gesture may not always work correctly and can sometimes cause the document to remain blurry.
Videos
In both the Files, Audio and Events & Messages sections, the video will play within the browser. If the format is not supported by your device, you will be given the option to download the file if possible. In all other areas where files can be uploaded, the file will download to your device and can then be viewed locally.
Note: Video playback on Windows XP & Windows phones is not supported.