Why Google's Favicon Crawler Is Completely Separate From Its Page Indexer (And Why That Matters) The symptom: ProToolTrack's favicon in Google Search results was wrong for six months. The file on the server was correct. Re-indexing the page 5 times did nothing. The root cause: Google has two separate crawl systems—one for pages, one for favicons. They don't talk to each other. The fix: Change the favicon filename to trigger a fresh cache. This is how we debugged it. Testing the Obvious Wrong Guesses Guess 1: The favicon file is corrupted. We pixel-sampled the image via canvas to count actual RGB values instead of eyeballing it: const img = new Image (); img . crossOrigin = ' anonymous ' ; img . src = ' /favicon.png?cb= ' + Date . now (); img . onload = () => { const c = document . createElement ( ' canvas ' ); c . width = img . width ; c . height = img . height ; const ctx = c . getContext ( ' 2d ' ); ctx . drawImage ( img , 0 , 0 ); const data = ctx . getImageData ( 0 , 0 , img . width , img . height ).…