Web safe file formats

.psd files (Photoshop Format):
They preserve layer information, you can continually edit and adjust images using the psd files.

.jpeg files - best for photos
• Best for photo images
• No transparency (background will always be white, even if the file itself has a transparent background)
• jpg is not suitable for images with text, large blocks of color, or simple shapes, because crisp lines will
  blur and colors can shift.
• Every time a jpg file is closed, the file recompresses; therefor, editing should be done using the psd files so
  image quality is not lost with multiple recompressions.
• Offers the smallest files size, but at the expense of overall image quality.

.png files - best for transparency
• Relatively recent graphic format so really old browsers don’t recognize png files.
• Supports transparency
• Provides greater depth of color, catering to images up to 24 bit in color.
•  Doesn’t support animation.
•  Very good quality and at a small files size.

.gif files - small file size, supports animation
• Used for web-based line art such as logos and buttons.
• Maximum of 256 colors, best for images that have only a few colors.
• Like .png, this file format supports transparency.
•  .gif is an option for putting animation online.