Welcome to the 17th of 31 applications we will post (in addition to the contest participants' submissions). Make sure you add this blog to your RSS / Atom feed and check the gallery for summaries of all the apps as they are released. 

The Web-based Image Resizer will let you upload an image and then download a resized version. To make it quick, we show low-quality versions for a preview, but when you choose to download, we use a high-quality resize algorithm to give you the best possible image. You can download JPEG or PNG.

If you don't want a standard size, you can choose to do a custom resize and either provide the exact pixel size you want or use a slider to choose the percentage you want.
 

Go To The Web Application.

Download The Source.