Good evening, @AbdulMahama ...
All the solutions posted here do not solve the question been asked. Therefore, this question should not be marked as "Solved". @kblack gave wrong solution to the question been asked, @Draco came close but yet still did not give the correct solution to the question. I wonder why @Robbie_Grant and @111566552512078 were so quick to mark this question as "answered", their claim is that "because there hasn't been any more activity in a while so I assume that you have the information that you need". What about if the original poster @u1021367 were hopeless-and-helpless and decided not to come back? This is unfortunate.
The reply from Ken Black (now retired, so you won't hear back from him) in late August 2017 was back when this Community website was using a different platform/interface. In that platform, people could mark one answer per question as "Correct". With the platform you and I (and many others) are now using, people can mark responses with the "Solution" button. The one difference is that multiple solutions can be marked for a given question. In a way, that's nice because there may be more than one solution available to accomplish the same task. However, I do agree with you that the response marked as "Solution" from @111566552512078 wasn't exactly a solution, so I've gone ahead and un-marked that response. Also, it's not necessarily true that @Robbie_Grant and @111566552512078 were the ones who marked their own responses with the "Solution" label. It's really possible for anyone to mark someone else's response as a "Solution"...and I don't know who marked those two replies as such...as it's probably been quite a while since they were marked with "Solution".
Let me reiterate what the original poster @u1021367 want (and many of us). Imagine you have a large class size (e.g. >=100) and each student is uploading a screenshot/picture of their solutions to canvas. The instructor has to download all the uploads, grade them and come back to canvas and record their grades; this is not good. In as much as all the downloaded student files occupy unnecessary storage space on your laptop, it makes grading unpleasant.
I re-read the original question from @u1021367, and I am not sure I completely agree with you. The user states, "I can't view any of the files or powerpoints for my classes without downloading them." (highlighting is my own) When the user states, "for my classes", I interpret this to mean the user is a student trying to view files or PowerPoints provided by his/her instructor in the class. To me, it sounds like this student was having trouble viewing the files on course content pages. I'm not sure if this student ever came back to this topic to look at responses that were provided. But, we can only hope that the student was able to get some help either from some of these replies or from people at his/her school.
This next part is a lot of speculation on my part, so I apologize in advance if I have misinterpreted anything you've described...
While I'm not positive, it sounds like you might be an instructor? And, it sounds like you are asking about files submitted to assignments in a Canvas course. Though, I am not sure why you are needing to first download all the files and save them on your laptop. Can I ask...what type of files are you possibly working with? Are the images standard documents like Word documents, PDFs, or images? Those should all be viewable in the Canvas SpeedGrader, and there wouldn't be a reason to download them (though I'm sure there are reasons you want to download them). Just in case, here is a video tutorial on how to use the SpeedGrader: SpeedGrader Overview (Instructors).
There should be a way such that students uploaded file can be seen, just like how their typed-texts can be seen in SpeedGrader WITHOUT DOWNLOADING the files. This will save much time for instructors grading a large class size.
This makes me very curious about what kinds of files students are uploading as part of assignment submissions. Maybe if you can help identify the kinds of files that are being submitted, that would be helpful.
I'm not sure if any of this will be of help to you, but I wanted to at least chime in to provide some of my own insights...for what it's worth. Looking forward to hearing back from you about these things...thanks! Take care...be well.
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