Most website developers will use a commercial product like Photoshop or Fireworks for resizing images. A free alternative to Photoshop is GIMP which is released under a Create Commons license. These programs can be overkill though if all you need to do is resize and save an image so that it loads quickly while still looking sharp and professional.
If you are looking for a free program to resize and save an image so that it is ready to diplay on a website you might try downloading Irfanview or RIOT.
RIOT is quick and easy to use, resize an image, compress it and save! Irfanview will do the same however you can complete additional tasks like cropping an image or batch processing hundreds of images with a few clicks.
If you only want to resize and compress an image quickly right now without installing a program you can try an on-line service like:
There are many other websites that provide a similar free service. Find one that you like best!
- Check out our Irfanview "Website ready images in four steps" tutorial.