For your growth! no one can understand this without accessibility testing: -
Open WebAccessibilityTool.com website because this website is using this tool.
See the icon Round 32 x 32 icon to accessible design.
WebAccessibilityTool.com is a big website, if it has been fully opened, then open a new tab.
Press in the new tab ppooii.com or llkkjj.com. This is a unique tool.
You will see WebAccessibilityTool.com again and surprised because of this accessibility testing.
This easy to use the option you can use for your website also. Get this code from Atoall.com and paste on your website then it will work.
The biggest Government and Educational websites are using this.