I have a PDF file already uploaded to my course. But it has no pictures at all, and I do want to upgrade it. Does my course have a limit of GB for this? Should I stick to a maximum size of my file?
For pdf files the size limit is 25mb. However we recommend to keep the file size as small as possible. This is so that it loads quicker for students and causes less issues on older devices. You can always run your pdfs through https://smallpdf.com/ to reduce their size.