Use only JPG or GIF graphics
… as these are the most web friendly.
I heard that there’s GIF87a and 89a. What are the differences?
GIF89a allows you to do GIF animations, and interlacing.
So what’s interlacing?
Simply put, the image builds up as the end user is watching the download. Sort of like a preview.
(image courtesy of webdesign.about.com)
So what about JPEG?
Well GIF8x, as good as it is, is limited to 256 colours. JPEG, 16,777,216. You can see why it’s popular for photos.
It does compression just like GIF, but you can select how “progressive” it is. Look at the image below, it demonstrates the effect of more compression across the photo.
(image from wikipedia)
Lets sum it up in a table:
| GIF87a/89a | JPEG | |
| Colours | 256 | 16,777,216 |
| Compression | Minimal | Good, but at cost of image quality |
| Animation?, interlacing? | Yes & Yes | No & No |
| Best use | Line drawing, cartoons | Photography |
Guess you did this post because my second image on my current post is blurry, LOL. Nah, it was intentional really. Anyway..I think I understand what you are talking about… does that mean you are a good teacher?
Guess you did this post because my second image on my current post is blurry, LOL. Nah, it was intentional really. Anyway..I think I understand what you are talking about… does that mean you are a good teacher?
No, nothing like that. Been meaning to write this for my benefit, and there we are.
Yes, I’m good at teaching people things
No, nothing like that. Been meaning to write this for my benefit, and there we are.
Yes, I'm good at teaching people things