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Firefox adds .jpg to .png image downloads

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Just what it says. I mean, it's usually not a huge problem, but saving things as .jpg affects some features and makes things a jumble when I end up with things saved as 'image.png.jpg'

Just what it says. I mean, it's usually not a huge problem, but saving things as .jpg affects some features and makes things a jumble when I end up with things saved as 'image.png.jpg'
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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:67.0) Gecko/20100101 Firefox/67.0

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My_Cheese_Is_Slippin'
  • Top 10 Contributor
39 solutions 453 answers

Hello MathU41,

I wasn't able to duplicate your problem but you could set Windows explorer to Show extensions for known file types. Then, the Save As dialog will show the file type in the Save As Type field.

Maybe it will help figure out where this is coming from.

Hello MathU41, I wasn't able to duplicate your problem but you could set Windows explorer to Show extensions for known file types. Then, the Save As dialog will show the file type in the Save As Type field. Maybe it will help figure out where this is coming from.
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Question owner

Huh... Testing with the avatar here doesn't cause the problem. From Twitter and Tumblr, it still tries to add .jpg--and .png isn't in the dropdown (which is blank if known file types are hidden)--but as least I can delete the '.jpg'. Maybe somewhere in the cookies or temp files.

Huh... Testing with the avatar here doesn't cause the problem. From Twitter and Tumblr, it still tries to add .jpg--and .png isn't in the dropdown (which is blank if known file types are hidden)--but as least I can delete the '.jpg'. Maybe somewhere in the cookies or temp files.
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cor-el
  • Top 10 Contributor
  • Moderator
17343 solutions 156777 answers

You can check the handlers.json file in the profile folder for references to .jpg

You can inspect the MIME database key with the registry editor (regedit.exe) and do a search for that MIME type (file extension) via Ctrl+F. Be cautious with editing the registry as there is NO UNDO possible: all changes are applied immediately. You can export key(s) in the registry editor before making changes. You can check specific file extension keys (e.g. .jpg) in the registry with the registry editor.

  • HKEY_CLASSES_ROOT\.xxx

You can check a possibly linked MIME type in the MIME Database registry key.

  • HKEY_CLASSES_ROOT\MIME\Database\Content Type\
You can check the handlers.json file in the profile folder for references to .jpg You can inspect the MIME database key with the registry editor (regedit.exe) and do a search for that MIME type (file extension) via Ctrl+F. Be cautious with editing the registry as there is NO UNDO possible: all changes are applied immediately. You can export key(s) in the registry editor before making changes. You can check specific file extension keys (e.g. .jpg) in the registry with the registry editor. * HKEY_CLASSES_ROOT\.xxx You can check a possibly linked MIME type in the MIME Database registry key. * HKEY_CLASSES_ROOT\MIME\Database\Content Type\
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Question owner

Useful to know. Didn't see anything that seems unusual through regedit, though, and there don't seem to be any references to either png or jpg in handlers.json.

Useful to know. Didn't see anything that seems unusual through regedit, though, and there don't seem to be any references to either png or jpg in handlers.json.
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