I was recently reading Vivien’s blog over at inspiration bit where she was reviewing a cool firefox add-on which allows you to manipulate images in firefox. The Firefox add-on application is called Picnik Tools and is available for Mac and PC. I downloaded it for my Mac to try it out and it is like a mini cut down version of photoshop right in your browser, ideal for people who don’t require a full blown image editor. Once you have downloaded Picnik you can access it via tools in Firefox and then import a photo to edit. Editing options include: crop, resize, exposure, colours, sharpen, red eye. I would imagine it would be pretty slow work trying to edit high resolution images but idea of images for the web. You can also edit images directly from various photo sharing sites including Flickr.
Take a look at Vivien’s blog post which has a more in depth review for more information.