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What with these HUGE cookie file sizes?

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  • آخری جواب بذریعہ Sovrim Terraquian

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I took a look today and I had 237 MB in cookies! This was after clearing the cache of all files. I've only had this (new) machine a couple months.

Short version: Sites have "cookies" from 200kb to as much as 34MB! For many of the sites over 3MB I have no account and have visited them only briefly.

To be clear, I don't care about the space being used. It's trivial. But what the heck is FFox storing and calling it "cookies"? Last I checked, a site was still limited to 4K size cookies and perhaps 50 per domain. So how are we getting to MB+ sized "cookies" per site? Again, the cache was cleared, so what's left aside from trivial cookie files of <4KB?

Desktop; Windows 11; Firefox 139.0.4 64 bit

I took a look today and I had 237 MB in cookies! This was after clearing the cache of all files. I've only had this (new) machine a couple months. Short version: Sites have "cookies" from 200kb to as much as 34MB! For many of the sites over 3MB I have no account and have visited them only briefly. To be clear, I don't care about the space being used. It's trivial. But what the heck is FFox storing and calling it "cookies"? Last I checked, a site was still limited to 4K size cookies and perhaps 50 per domain. So how are we getting to MB+ sized "cookies" per site? Again, the cache was cleared, so what's left aside from trivial cookie files of <4KB? Desktop; Windows 11; Firefox 139.0.4 64 bit

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The size you're citing isn't just cookies; it's the sum of all local data stored for a website. According to the MDN Web Docs, the default (best effort) limit of storage for a site is either 10% of the total disk size or 10 GiB, whichever is less.

As for why websites store that much data on your computer, that's a valid question. However, it's a philosophical question beyond the scope of Firefox support.

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