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Resize Internet Explorer to the resolution of your choice without tweaking the OS settings

February 22nd, 2012 Leave a comment Go to comments

Tested on IE7 and IE9.
Here is a useful way to change the resolution of Internet Explorer if you need to test
a webapp on a specific resolution. It is pretty useful if you do not want to change the OS settings and/or if you need to test several resolutions.

In IE, you create bookmarklets which are JavaScript scripts that are intended to be run from a web browser’s bookmarks bar or menu.

  1. Add a favorite (shortcut : CTRL+D)
  2. Choose a name (for instance : 1024×768)
  3. Display the favorites
  4. Right-click on the favorite and edit its properties
  5. Add the URL : javascript:(function(){ window.resizeTo(1024,768); })();
  6. Click OK. On IE7, you get a warning message (“JavaScript is not a recognized protocole”). Ignore it.
  7. Follow the same steps to add another bookmarklet for another resolution.
    Then to change the resolution, you just need to select the favorite.

I quickly tried it on Firefox 10, it does not work. If anyone figures it out, please let me know.
Did Firefox take away the ability to use javascript: in the address bar ?
javascript:alert(7*45) does not even work in FF 10 (?!?)
Some discussion that i found on the matter : https://bugzilla.mozilla.org/show_bug.cgi?id=688841

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