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I want to take screenshots in a web browser so that the resulting graphic (.png, .jpg) is a specific resolution, for example: 1024 x 768

Besides adjusting my monitor resolution, is there any way to do this with an application or plug-in/add-on specifically for Mac OS? There is a Firefox plug in called Window Resizer, but it does not work with newer versions of Firefox.

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  • As an aside: 1024x768 is NOT a common browser resolution. The screen might often have that size, but that implies that the browser is smaller.
    – Arjan
    Apr 28, 2010 at 5:54
  • Do you want to include the browser itself in your screen capture?
    – Arjan
    Apr 28, 2010 at 17:18

4 Answers 4

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The last program I used for this was Gadwin Web Snapshot

I do not recall all its features but I think it can achieve what is required here.

Other options would be:

  • Screenshot - Webpage Screenshot, a Chrome extension that lets you take screenshots

    enter image description here

  • Capture Me, which is a flexible screen capture and recording utility for Mac OS X which features a floating capture window, several saving options, and resize ability.

    alt text

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  • Thanks for adding the extra links ramon, I took liberty and added them to your answer
    – Ivo Flipse
    Apr 28, 2010 at 6:41
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The Firefox addon Web Developer supports resizing the browser window. There are a couple of default resolutions and you can easily add more.

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If you just want the contents, not the browser window (and its toolbars) itself, then Paparazzi might be quite useful. It not only has its own GUI, but also has a URL syntax that supports invocation from any browser, including setting the size:

paparazzi:(maxwidth=1000,maxheight=700)http://www.google.com/

Turn this into a bookmarklet like so:

javascript:void(window.location.href='paparazzi:(maxwidth=1000,maxheight=700)'+window.location.href)

In Safari you can assign it to one of the first 9 places in the bookmarks folder, and hence automatically give it something like a Command-1 keyboard shortcut. Note that whatever browser you use, the actual screenshot will always be created using WebKit (just like Safari and Chrome do, but different from Firefox's Gecko).

Paparazzi also supports some AppleScript. Or if you prefer the command line, using webkit2png:

python webkit2png -W 1000 -H 700 http://google.com/


If you also want to include the browser window itself, then I doubt there's a browser-specific tool for that, so you'd have to use your regular screen capture program. To resize the browser window for that, I use the following bookmarklet (which, for some browsers might apply to the inner format, but for Safari and Firefox refers to the outer size):

javascript:void(window.resizeTo(1000,700))
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You want AppleScript.

Or a JavaScript bookmark now that I think about it.

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