
1) Web browser
Found on
https://www.crosswordclues.com/clue/favicon

Opera Software added the ability to change the favicon in the Speed Dial in Opera 10. ===How to use=== This table illustrates the different ways the favicon can be recognized by the web browser. If links for both PNG and ICO favicons are present, PNG-favicon-compatible browsers select which format and size to use as follows. Firefox and Safari wil...
Found on
http://en.wikipedia.org/wiki/Favicon
No exact match found.