Use the sizes attribute to set the size of the icon in HTML. You can try to run the following code to implement sizes attribute −
Example
<!DOCTYPE html> <html> <head> <link rel = "icon" href = "my_icon.gif" type = "image/gif" sizes = "16x16"> </head> <body> <p>This is demo text.</p> <p>We set an icon here,</p> </body> </html>