Firefox for Web Developers

Official Firefox account for people who build on the web. Learn about the things we're working on to grow and improve the web platform.

Firefox for Web Developersfirefoxwebdevs
2026-02-12

@balloob Yes! Although it will require a site permission addon, similar to WebMIDI support.mozilla.org/en-US/kb/s

Firefox for Web Developersfirefoxwebdevs
2026-02-12

Here's a quick rundown of what we delivered as part of Interop 2025, and what's planned for Interop 2026!

More details on the features and focus areas: hacks.mozilla.org/2026/02/laun

Firefox for Web Developersfirefoxwebdevs
2026-02-12

It's time for Interop 2026! This is a cross-browser effort where we agree on a set of focus areas to improve compatibility.

Here's how things went in 2025, and what we're taking on for 2026: hacks.mozilla.org/2026/02/laun

Firefox for Web Developersfirefoxwebdevs
2026-02-12

@link2xt @thomasfuchs thanks for adding context. Here's an example of one of the flows. The local model isn't downloaded until the confirmation.

But yeah, I don't want to tell people this is "opt-in", because you can justifiably say you didn't opt-in to the _offer_ of this feature. But AI controls does let you opt out of that, and any future AI feature.

mastodon.social/@firefoxwebdev

Firefox for Web Developersfirefoxwebdevs
2026-02-11

@ada would you be up for filing a bug report on this? I'm happy to help, but I feel that folks will likely have follow-up questions with regards to your device etc.

There's a "Firefox For Android :: Tabs" component which seems like a good fit bugzilla.mozilla.org/enter_bug

If you file it, send me the link, and I'll try and find the right people to take a look.

Firefox for Web Developersfirefoxwebdevs
2026-02-11

@mkljczk this is an account primarily about web platform features, aimed at developers, so I don't have that explanation to give you.

I haven't _personally_ found the AI sidebar useful, but I don't personally use bookmarks either.

I've played with agentic browsing, but I wouldn't let it run in my main profile until I had more confidence in the security.

Others' mileage may vary etc etc.

Firefox for Web Developersfirefoxwebdevs
2026-02-11

@ausi yeah, I haven't found a reliable way yet either, but I'll continue bugging folks about it.

I don't think we'd be able to disable validation altogether, because folks will still be using the events & such, but adding their own errors.

Firefox for Web Developersfirefoxwebdevs
2026-02-11

@ausi this… was news to me too.

I'll look into ways of feature detecting this.

Firefox for Web Developersfirefoxwebdevs
2026-02-10

@pikesley shipping in the next version, 148, later this month. mastodon.social/@firefoxwebdev

Firefox for Web Developersfirefoxwebdevs
2026-02-09

@ninafelwitch I think there's a risk that folks would miss out of genuinely (imo) useful features like translation, because they thought "ugh AI" and clicked dismiss, but I'm guessing a little - I work on web platform features, hence the account name, and I personally have little interest in AI becoming a large part of my role here.

I only got involved in the "kill switch" because I noticed it lacked a way to "disable all & future features… except [x]", which I was able to push for.

Firefox for Web Developersfirefoxwebdevs
2026-02-09

@ninafelwitch I think that's where the confusion comes from, yeah. The use & download of AI is opt-in, but the offer of using & downloading it isn't. This is why I've avoided using the term "opt-in" unprompted, because folks can have a different, but also reasonable definition.

Whereas the "kill switch" is simpler. Enable it, and the entry points are gone. Including for future AI features.

What is and isn't an AI feature is another grey area (e.g. translation), but I hope we got that right.

Firefox for Web Developersfirefoxwebdevs
2026-02-09

@ninafelwitch actually, the "settings" link just takes you to general settings. There used to be an option there to disable the "suggest more of my tabs" button, but it's moved to the new "AI controls" settings.

It should link to "AI controls". I've suggested this internally, and folks agree.

Firefox for Web Developersfirefoxwebdevs
2026-02-09

@ninafelwitch the first screenshot is when you create a tab group, the second is if you click "suggest more of my tabs".

If you click cancel in the second screenshot, you go back to the first screen.

Next time you create a tab group, you get the first screen.

Although the "settings" link takes you to where you can disable this entry point, and all AI entry points, including ones for future AI features.

Tab group creation popup, featuring "suggest more of my tabs"The confirmation, which tells the user it's an AI feature. They can "cancel" or "continue", or go to "settings".
Firefox for Web Developersfirefoxwebdevs
2026-02-09

@ninafelwitch and it is. Models don't download until you engage with the feature.

However, some folks have said this doesn't count as opt-in, as the entry points are still visible.

AI Controls let you also disable these entry points.

Confirmation dialogue:

Nightly uses Al to read your open tabs’ titles and descriptions to suggest more tabs and group names. This happens on your device.

Cancel / Continue

Customize Al in settings
Firefox for Web Developersfirefoxwebdevs
2026-02-09

@memdmp @alextecplayz @giacomo fwiw, when you click "suggest more of my tabs", you get this:

Confirmation dialog:

Suggest more of my tabs
Nightly uses Al to read your open tabs’ titles and descriptions to suggest more tabs and group names.

cancel / continue

This happens on your device. Customize Al in settings
Firefox for Web Developersfirefoxwebdevs
2026-02-09

@ada general release notes are at firefox.com/en-US/firefox/andr, you can also search bugzilla. But, what makes you suspect the screen lock?

Firefox for Web Developersfirefoxwebdevs
2026-02-06

@kAlvaro could it be that your server has some auth header that's of one-time use?

hm although that doesn't explain why it works with curl

Firefox for Web Developersfirefoxwebdevs
2026-02-06

@jackf723 @danhugo this isn't a feature that I'm very familiar with personally, but developer.mozilla.org/en-US/do suggests this was shipped in 139

Firefox for Web Developersfirefoxwebdevs
2026-02-06

@kAlvaro I just gave this a quick test and it seemed to work. Can you give me a few more details on the issue you're seeing?

Firefox for Web Developersfirefoxwebdevs
2026-02-05

@wojtek it's so nice that Mastodon does 60fps.

Although, sorry, I'll be back in my garage for the web feature videos

Client Info

Server: https://mastodon.social
Version: 2025.07
Repository: https://github.com/cyevgeniy/lmst