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This isn't really a technical question so I apolgoise if I ruffle any feathers!
How do sites like these image web pages in different browsers? i.e. litmusapp.com
Thanks all
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The browser uses the src attribute of the tag to trigger the image load. It doesn't matter if it is the first or the 1,000th image in your HTML. If the browser gets the src attribute, it will trigger the image to be downloaded, regardless of whether it is in or out of current view.
The HTML <img> tag is used to embed an image in a web page. Images are not technically inserted into a web page; images are linked to web pages. The <img> tag creates a holding space for the referenced image. The <img> tag is empty, it contains attributes only, and does not have a closing tag.
I've found how-to's on using a custom build of the webkit(safari,chrome,etc) engine to generate PNG screens. Mozilla also has a bitmap buffer than can be copied and converted to PNG. There are addons you can download and view the XUL source code. For a utility, I wold lean toward a command line build of webkit or similar for rendering. It's open source and not terribly hard to do.
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