Go to http://www.picnik.com/ . Then click Get started now, then click upload photo, then double click the photo you want to resize, then click resize, then either change the pixels or click % and input a %, then click save and share,when you click save and share it will show you the size of the photo in KB,then if the size is ok, click save photo. If the size of the photo is not to your liking then click edit and then resize and so on.

You can resize your photos (or simply recompress them - helps as well!) - on various WEB sites (google for image converter online). Their advantage is that you do not have to pay anything, to install anything expect maybe for a java engine. Their disadvantages are limited image size, limited conversion formats and an average quality of the conversion results (most use predefined php or asp routines). - using image editing/viewing programs. They can be free (GIMP, Irfanview, Google Picasa) or commercial (Photoshop). They allow you to precisely set the conversion options resulting in good conversion results. Their weakness is the complex interface for a relatively simple task and the more or less poor support for converting a lot of images in one operation. - using dedicated image converters (free or paid). They are created for image conversion and are (typically) simple to use. Since these are tools shaped for this task, they (typically) have no weaknesses in image quality, easy to use, advanced conversion options, batch mode support, ... Some of them support RAW formats (a must for professional photographers) and maybe upload to various web photo album services (for example picasa WEB Albums). An example of an image converters supporting everything noted above is AZImage ( http://www.racsoftware.com/imageconverter.php )