Monday, December 27, 2021

Favicon Analysis

Adam Doppelt (tweet, via Hacker News):

Recently my team was tasked with building a favicon fetcher. As a warmup, I looked to see how Chrome handles favicon loading. Do you know that the favicon loader in Chrome is many thousands of lines of code? Why is it so complicated?

We realized we knew very little about the favicon ecosystem. Eventually we decided to fetch the Tranco top 100,000 websites and analyze their favicons.

2% are not square, and 21.1% of .ico files are actually PNGs.


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