Categories
Category: Images
Categories
Optimization: image size
If possible, try to create images for the web that are less than 1160 bytes, they will fit in just one TCP-IP packet and make the download easier.
Nobody seems to optimize nowadays though…
Use the following website:
Categories
Something about images
- gif images
- Stands for “Graphics Interchange Format”
- Good compression with images with solid colors (Logos, graphs, text, simple banners)
- Offer single color transparency (One of the colors can be transparent, showing the background where it sits instead)
- It only contain 256 shades, meaning images with lots of colors, like photos, may look a bit “posterized”
- It support animations composed of several gif images
- jpeg images (jpg)
- Stands for “Join Photographic Expert Group”
- Can contain millions of different colors (ideal for photos)
- Compression algorithm specialized in color accuracy, but text may lose sharpness and become blurry
- png images
- Stands for “Portable Network Graphics”
- PNG8: Same as GIF, 256 shades, 1 color transparency, but compress better than gif
- PNG24 and PNG32:
- more colors than jpg images
- Alpha transparency (256 levels of transparency)
- IE6 doesn’t handle transparency too well
- Files are bigger than JPEG