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When I try to download a jpg or jpeg file, Firefox converts it to png.

  • 9 vastausta
  • 1 henkilöllä on sama ongelma
  • 1 näyttö
  • Viimeisin kirjoittaja FredMcD

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When I try to download a jpg or jpeg file, Firefox converts it to png. Why is this and how can I stop it? Thanks, Mike.

When I try to download a jpg or jpeg file, Firefox converts it to png. Why is this and how can I stop it? Thanks, Mike.

Valittu ratkaisu

There was a Silverlight plugin that was out of date. I updated it and the problem went away. I'm not entirely convinced that Silverlight was causing the problem, but maybe it was. Thank you for your help cor-el and FredMcd. Mike.

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That should not happen unless you, or an add-on, is changing it. Or, was it a png in the first place?

Right click on the image and select Save Image As What is displayed as far as the extention?

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No, it was not png in the first place, it was jpeg. I tried save image as, but when the dialog comes up it has already changed the extension to png. I also suspected a plug in. The only one that looks like it might be a problem is the picasa plug in. This is my mother's computer. I do not use picasa and I do not know anything about it, but I have tried googling my problem many different ways, both including or not including the word picasa in my search, and apparently I am the only person in the universe who is having this problem. I have noticed that various conversion plug ins exist that are designed to do just the kind of thing that is giving me a problem, but I do not see any such thing in my list of installed add ons, plug ins, etc.

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Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac=Options)
key, and then starting Firefox. Is the problem still there?

While still in Safe Mode,

Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Then in the reply box at the bottom of this page, do a right click in the box and select Paste. This will show us your system details. No Personal Information Is Collected.

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Do all files work properly if you change the file extension to .jpg when you save the file?

Try to rename (or delete) the mimeTypes.rdf file in the Firefox profile folder to reset all file actions.

You can use this button to go to the current Firefox profile folder:


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 the linked MIME type in the MIME Database registry key.

  • HKEY_CLASSES_ROOT\MIME\Database\Content Type\

Muokattu , muokkaaja cor-el

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Application Basics


Name: Firefox Version: 43.0.3 Build ID: 20151223140742 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0 Multiprocess Windows: 0/1 (default: false) Safe Mode: true

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Graphics


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Important Modified Preferences


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Important Locked Preferences


JavaScript


Incremental GC: true

Accessibility


Activated: true Prevent Accessibility: 0

Library Versions


NSPR Expected minimum version: 4.10.10 Version in use: 4.10.10

NSS Expected minimum version: 3.20.2 Basic ECC Version in use: 3.20.2 Basic ECC

NSSSMIME Expected minimum version: 3.20.2 Basic ECC Version in use: 3.20.2 Basic ECC

NSSSSL Expected minimum version: 3.20.2 Basic ECC Version in use: 3.20.2 Basic ECC

NSSUTIL Expected minimum version: 3.20.2 Version in use: 3.20.2

Experimental Features


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I almost forgot to try downloading a jpeg while in safe mode. I just tried it now and it worked with no problems. Mike.

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It could be the work of one of your add-ons. Type about:addons<enter> in the address bar to open your Add-ons Manager. Hot key; <Control>(Mac:<Command>)<Shift> A)

In the Add-ons Manager, on the left, select Extensions. Disable a few add-ons, then Restart Firefox.

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All of them.

If the problem continues, disable some more (restarting FF). Continue until the problem is gone. After, you know what group is causing the issue. Re-enable the last group ONE AT A TIME (restarting FF) until the problem returns.

Once you think you found the problem, disable that and re-enable all the others, then restart again. Let us know who the suspect is detective.

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Valittu ratkaisu

There was a Silverlight plugin that was out of date. I updated it and the problem went away. I'm not entirely convinced that Silverlight was causing the problem, but maybe it was. Thank you for your help cor-el and FredMcd. Mike.

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That was very good work. Well Done. Please flag your last post as Solved Problem so others will know.


https://www.microsoft.com/getsilverlight/get-started/install/default.aspx Silverlight 5 (5.1.41105.0)


Use this link to check that your plugins are up-to-date. If any are listed as unknown or research, do not worry about them.