As you know, there was an option available in Google Image Search known as Search image with specific screen resolution, option name as Exactly but recently Google changed the approach and am not happy with the pre-defined sizes available there, any idea how I can hunt for a specific resolution image?Say what if I want to search for an image of 300x300Screen of new Google Image Search Options...
How do I search an image with specific resolution using new Google Image Search
google;google image search
Looks like the option got removed, and Google have even acknowledged it:Thanks for writing in. We're aware of this issue, and we're working on  bringing the feature back. I'll let you know as soon as it's back up.  Sorry for any inconvenienceAs pointed out in that thread, you can still get an exact size by using the imagesize filter like so:html5 logo imagesize:300x300