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When opening a big image file directly in Firefox, I have seen 3 kinds of opening. Image opens:

  1. From top to bottom
  2. From bottom to top
  3. From blurry to clear (in full dimensions)

I have mostly seen the first one happening (You may try this example). Is there a setting to change the way an image opens in Firefox, or is it just random? I'd prefer the third one as default.

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I'm using Firefox 11, if it matters. – Mehper C. Palavuzlar Mar 16 '12 at 1:12
up vote 6 down vote accepted

How the image displays depends on what type of image it is. Progressive-encoded images go from blurry to clear. BMPs go from bottom to top. The rest go from top to bottom.

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No way to hack it from settings or using an addon? – Mehper C. Palavuzlar Mar 16 '12 at 1:21
I'm sure you could, but it would have to wait until the entire image is downloaded, at which point you could just, you know, display it. – Ignacio Vazquez-Abrams Mar 16 '12 at 1:24
  1. using javascript you can wait for images to load, then set their display property to 'not none'
  2. using greasemonkey add-on you can run javascripts on any page - only problem: maybe it does so after the page/images already been loaded
  3. however, it is possible to run some scripts before even that, i.e ABP does that - it sets images (blocked ones) to display:none.

so on conclusion, it is possible, using add-on with that simple script code.

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