[thrdbndndn]

I'm also surprised by this number. Granted it's not just old JPEG standard, still 100k sounds like a lot for a decoder.

[pixelesque]

It's the encoder as well, plus converter code for things like JPEG reading as well, and JPEG XL supports animation...

[thrdbndndn]

I guess the original comment in TFA is a little bit misleading, then.

> of the reference decoder (currently behind a pref in Firefox Nightly), which weighs in at more than 100,000 lines of multithreaded C++

[lonjil]

That number includes all the different extra tools in the repo, and all tests. And as mentioned, the encoder.

[archerx]

There must be a lot of edge cases that were discovered over the years.