You appear to be mixing terminology.
Do you mean changing the desktop background? Or changing an image on your personal webpage?
When scanning a picture it can change images into codes for input to the computer.
set as a desktop
To change the image of the homepage, you must have an account. Then click change background image in the bottom right corner of the homepage. It will then let you pic from a gallery or upload your own picture.
a Jonas brother picture
You can only do it by computer
If you're using interenet explorer, you go to: Tools >> Internet Options You'll see it right there at the top.
you ask someone on instagram
Go on google.com and below the search bar it says "make google my homepage"
First you need to know which program is locking your homepage. Go to Control Panel > Add or remove programs and uninstall any program that you don't want on your computer. You can change the homepage at Tools > Settings > Homepage. Also, you can drag the website's favicon onto the home button.
just go to the site for making it you homepage ,sometimes there is written "make it you homepage click it. Or right-click it and select homepage. For example go to Bing there will be written homepage click it
You can always change the homepage you click that opens up first. This can be done in the settings option in Chrome.
you put the chip on the computer download it to the computer then put it on facebook bygo to change profile picture then your done p.s i made this up!