Photos still look great for web-viewing even when they're at resolutions well below the optimal size for printing. Resize and resample your images down to a more reasonable size at Web Resizer.
Photo by docentjoyce.
Upload a photo to Web Resizer and you can not only resize the image to smaller dimensions but tweak its appearance and image quality. You can round the corners or leave them square, add a border, crop, rotate, sharpen and adjust the image quality to push the image size down even further. If you're unable to decide which image quality setting is best, you can check the "Compare Image Sizes" box and Web Resizer will lay out image in increments of 10 points on the scale for you to compare. You can also do basic adjustments to the contrast, exposure, and tint of the image.
It's not a tool for batch conversion or heavy editing but for individual tweaking to optimise a handful of site images or adjust a profile picture to fit within the size and resolution requirements of a site you want to upload it to, it's a handy and free tool. Have a favourite online editor? Let's hear about it in the comments.