Hey there.
I’m studying chemistry and I’ve downloaded an older students deck back in September. I’ve just realized that he added a lot of useful pictures that just don’t seem to appear when reviewing the deck, but I can see them when I try to edit certain cards. While all of the pictures can be found in the folder “collection media”, Anki lists them as unused (Unbenutzt) when reviewing media… I’ve searched the web and tried multiple things myself including deleting and re-downloading the deck, nothing seems to work. Any help is appreciated 
- Those unused files – are you sure they are referenced by any of your cards? They might be actually unused and just haven’t been removed by the original author.
- I can see the picture isn’t displayed in the study screen. But the CR2 is wrong too. Which leads me to believe there is something wrong with your card templates (see Card Templates - Anki Manual). Please paste all three templates (front, back, style) in code blocks. Code block are very important, else this sites eats formatting. You do code blocks like this:
```
You code goes here.
``` - Is this deck public? If yes, please post the link.
Good eye – yep, it’s a template problem. That’s almost definitely a type-answer field that is stripping out formatting and media. On the card template, find {{type:Rückseite}} – change it to {{Rückseite}} .
Very good point, which I haven’t thought about. Yes, it’s very possible that the unused pictures are just there because the author didn’t remove them. As for the CR2, very good catch, but in chemistry this should actually be correct, since R just stands for any arbitrary rest. Nonetheless you were right about the templates, I did what @Danika_Dakika suggested and it seemed to work, thanks! I don’t really understand how you made the connection from CR2 to templates, haha 
. So if you dont mind sharing your thought process, I’d appreciate that a lot since im trying to learn more about Anki. Its so powerful but so confusing…
@Danika_Dakika Thank you! You’ve spared me from a lot of further frustration 
. So if I understand correctly, the {{type:Rückseite}} leads to me having to type the answer when reviewing, but also strips the back of the cards of all media? Is there a way for me to filter out all of these card types and change them all at once or will I have to do that manually for each one?
Your “Angezeigte Karte bearbeiten” window shows R-NH-CR2-OH (the 2 is a subscript / tiefgestellt). Your study screen on the other hand shows R-NH-CR2-OH without subscript.
I cannot comment whether the chemistry thingy is correct or not from a chemistry point of view. But seeing that
- the formatting is missing for the CR2 part and
- the picture is gone
it points to something in the card templates being the reason.
(and the reason I was asking for the templates code is that there are actually a lot of possible ways to do that – but as Danika_Dakika pointed out, the type: is the most common problem for cases like yours).
Everything that would prevent you from typing in the answer (you cannot really type in stuff like videos, pictures ect. and stuff like special formatting – like subscript – are stripped because they cannot commenly be typed either). This is limited to the field that was setup as type:, though. Other fields won’t be stripped of media and formatting.
You can create a new field, e.g. Bilder (Vorderseite) and put the pictures into that field instead. Then you can use type: on the Rückseite field. It’ll still strip out the subscript formatting but the images will be there.
@Anon_0000 That makes so much sense! Thanks a lot