Using Graphics in Blogs

The most popular ways of loading a graphic into a blog post is either:

to upload one from your computer 

or 

to link to a graphic on its own web page.

Show at least one example of each and explain how you did it.

Graphic files on internet are saved as many different file types, such as 

jpg

jpg

jpg

png

gif

Show an example of one of each and say at least one thing that makes it special.

Graphic files are measured in file size and pixels.

What is the difference?

What is the pixel size of one of the image fies you have used so far.

ALT tags

What are ALT Tags and what are they used for?