I think I have seen more cool web based applications come from the Flickr API than any other public API. In addition there seems to be no limit to what people use it for and the development seems to be prolific. This is another example and one of the coolest I have seen.
I have always wanted an easy way to create a mosaic from photos. I have looked and there are ones that you can buy. These then come with a massive photo library that you either have to store on your system or muck around with disks to use. Or you can use your own photos, does anyone have that many photos? Maybe but not me, it would be a boring mosaic when you zoomed in.
The answer is; Image Mosaic Generator and it is fantastic. The images that are used in the generation of the mosaic all come from Flickr. There are some examples on the main page of the website. But it is far more fun to generate your own. Just select an image that you have and upload it into the generator. It about three to five minutes to upload and generate the image, it is huge so people that have “slow” connections might have to wait a while. But it is worth it.
Once generated you can then scale the image, bigger up to 200% or smaller to suite your needs. Once scaled you can then download the image. I found the button for downloading hiding in the bottom left of the generated image. Or just do what I did and download the big image and scale it with any reasonable photo editing program. The results are great, stand back from the images to get the full effect. The above image is a zoomed image of the one below.
No extra programs or masses of pictures on your PC, fast easy mosaics and it is a heap of fun.