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For a recent project, I needed to read an .mp3’s ID3 metadata (song title, artist, year, album) in pure JS. The idea was to have the user select a song file, and boom!, its info would display to the user. Good news…totally easy with the FileReader API and JS typed arrays. Initially, I did a quick search to find some examples, but all of the examples I found used older techniques like manipulating a binary string. Ugh! We have better tools now for working with binary data in JS. Typed arrays to t...