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Comment by fwn | Hacker News Reader

On Firefox for Android all extensions must be present in the AMO store at the time of installation, no sideloading - even of signed addons.

Mozilla banned non-store extensions in their last Firefox for Android overhaul a few years ago and afaik does not plan to allow them again.

This is the reason why the anti-paywall extensions are all gone/DMCAed.

It's a massive power shift away from the user. No idea why Mozilla did that.

How do you develop extensions then? Surely it must be possible somehow.

Not impossible, at all.

The answer is Firefox Nightly or Firefox Developer, you're freely to install unsigned addons in these editions.

> Not impossible, at all. The answer is Firefox Nightly or Firefox Developer, you're freely to install unsigned addons in these editions.

I do use Firefox for Android Nightly. How would I install an unsigned addon there?

I don't think it's possible. ... but if it were, this would be very useful to get the Anti-Paywall addons back.

It's called Sideload XPI, iirc Firefox Nightly allows you to sideload XPI if you enable Experimental by tapping Firefox logo in About 7 times.

But it's easier with Ice Raven or Smart Cookie Web Preview:

Opera and MS Edge for Android don't support extensions as well. So my guess is, the Playstore rules won't allow it.