Brightspace can preview many uploaded files directly in the browser. This works well for PDFs, Word documents, and some PowerPoint files.
However, some files may not display as intended in the preview window. For example, spreadsheets may be broken into pages, and PowerPoint files with video or interactive content may not work correctly in the browser.
For these files, it is usually better to create a download link so students can open the file using the appropriate desktop or web application.