Resolution describes how many dots you want to make up your picture. The higher the number the better the resolution. The file sizes for 300 dpi are usually very large, however. When thinking web graphics, the magical number becomes 72. Generally, web browsers do not have the ability to project images with a higher resolution than 72 dpi, so saving images at a higher resolution only increases the download time for your web page.
Graphics are the main culprit of any slow website.
So, when designing, keep in mind how long you generally wait for a page to load before growing impatient. Now that you are resolution savvy, you should also know what format you will want to save your files in. Inc. Actually, I'm sure the editor is going call me on this, so how about if I just be nice and tell you for free. I receive complementary doughnuts and coffee in my building anyway. Inc. All Rights Reserved.