File size explained
(Note: file size is not the actual dimensions of the image).
If you use graphics on a web page, the file size is crucial for download times. As a rough guide, pages that total 45kb should load via a 14.4kb modem within 15 seconds. Always check the total size of your work, which includes the graphics and any other work you’ve created.
To check the file size:
- open the folder that holds the file
- from the View menu, choose Details
- the file Size should appear next to the Name column.
Resolution and Image size
The image size is simply the physical dimensions of the graphic.
For example on a computer screen, if your screen setting is 640 x 480, an image of 640 X 480 pixels would fill the whole screen. If your screen setting is 1024 x 768, it would appear as about 2/3rds of the screen.
When working with images for the screen it’s always best to think in pixels instead of centimetres.
The Image Resolution is the number of pixels per inch in the image (dots/inch, pixels/centimeter).
Large file sizes and high resolution are not important when creating images for print, in fact the larger the file size and resolution the better the quality.