If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort?
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@firefoxwebdevs Customizable selects would be great of course, but it’s maybe a bit too early. This is a feature that shouldn’t be rushed.
@mvsde I wanted to ask for these, too, but agree that they need to be done well.
Recently used select2 and the amount of CSS hacks needed to make it behave as I needed and to make it accessible was far too big.
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@firefoxwebdevs web serial api!!!!
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@firefoxwebdevs Customizable Selects would be great.
@herschel_r we're actively working on it
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@firefoxwebdevs Customizable selects would be great of course, but it’s maybe a bit too early. This is a feature that shouldn’t be rushed.
@mvsde it's definitely not too early, we're actively working on it
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@mvsde it's definitely not too early, we're actively working on it
@firefoxwebdevs That’s great to hear!
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs Web Bluetooth and USB support!
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs selfishly as I want it on my blog, initial-letter support.
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs I would've liked to see mobile testing being more reliable and forming part of the main dashboard. It's such a big area to still not be included. I'm aware it's in under investigation, but it's there for a few years now.
If I had to pick one, probably WebNotifications. I use them a lot as a user and there's loads of differences between browsers. None of them work perfectly, but Firefox and Safari in particular are missing a lot of important features like image, renotify, silent and icon (Safari iOS).
https://github.com/web-platform-tests/interop/issues/1047
https://developer.mozilla.org/en-US/docs/Web/API/Notification -
@firefoxwebdevs Web Bluetooth and USB support!
@gundersen would you be ok if it was behind a site permission addon? https://support.mozilla.org/en-US/kb/site-permission-add-ons
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs XSLT. Keep 1.0 support and add in support for 2.0 and 3.0 -
If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs more complete implementation of color spaces (display-p3). In canvas, ImageData, input color picker, ...
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs my faves are in Interop 2026. It is an exciting set!
If I had to add one for Firefox it would be progress() https://webstatus.dev/features/progress-function
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@firefoxwebdevs XSLT. Keep 1.0 support and add in support for 2.0 and 3.0
@job I can't imagine newer versions of XSLT being added. I don't think you'll be happy with this, but you can transform XML with JS https://jakearchibald.com/2025/making-xml-human-readable-without-xslt/
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs the CloseWatcher API (I guess maybe implicitly we get that from closedby?).
field-sizing: content would be a nice win too.
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
Directly support Anchor Positioning API v2
It will nicely supplement the dialog APIs too.
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs `sizes=auto`
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs (multiple) Customizable select
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@firefoxwebdevs (multiple) Customizable select
@Thain @firefoxwebdevs listbox or drop-down out of interest?
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@Thain @firefoxwebdevs listbox or drop-down out of interest?
@Lukew @firefoxwebdevs Most of the time, I've seen drop-down, but any of them can be a very good start
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If you had to pick _one_, which web platform feature would you like in Firefox that isn't part of the Interop 2026 effort? https://hacks.mozilla.org/2026/02/launching-interop-2026/#new-features
@firefoxwebdevs
This (and for the style selection ui to be more visible again): https://bugzilla.mozilla.org/show_bug.cgi?id=216537
