Lorem ipsum is a block of dummy text in Latin often used in design and publishing to fill space in a mockup. The brilliant Dummy Image Generator is like ‘lorem ipsum’ for images.

Like ‘lorem ipsum’, the Dynamic Dummy Image Generator offers a glimpse at what content might look like in a layout, but instead of placeholder text, it creates a placeholder image. Using the service is dead simple:

Sometimes you just need a placeholder image right at your finger tips. Just enter the width + x + height at the end of this URL and off you go!

Example: http://dummyimage.com/640x480

You can even use a dummy image as a source in your HTML, like <img src='http://dummyimage.com/340x123' alt='A Dummy Image'>, which would look like this:

The Dynamic Dummy Image Generator is free to use, and is a bit on the geeky side, but if you’re a designer or just spend the occasional free minute tinkering on the web, it’s a really simple, well-executed idea.

(Via Lifehacker.)