The Informatics Open Courseware service currently (as of January 2024) has a file upload size limit of 6MB. This is to ensure the performance of the site is not compromised at it continues to grow. If you have some files which currently exceed this size – and which could be reduced – then you may want to consider the following options.
Mac Users
PDF files
For Mac users, if you are looking to compress a small number of files, the Preview App is probably your best friend here. Open the PDF in Preview and choose File>Export. Select the Quartz Filter pop up menu and then select “Reduce File Size’.
Word documents
For Word documents, you can use Pages instead of Preview to reduce your document’s file size.
Linux Users
Linux users may be interested in https://imagemagick.org/ – free, open source software for editing and manipulating digital images. This is especially useful for tasks requiring bulk image file manipulation.