Not yet stable

For a given set of browsers, what APIs are not yet in all of them.

Example Comparisons
Browsers
Features

Summary

A count of the number of APIs are in Browser X but not in Browser Y.
Not in ChromeNot in Chrome Android
In Chrome 7
In Chrome Android 14

Unstable APIs

Below is a list of features that are not in all of Chrome and Chrome Android

Raw Data

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HTML Data

API First Browser Date Days in Limbo Notes
html.elements.hr.hr_in_select Chrome10/31/2023870
Chrome: Exposes the <hr> visually in the page only when the menu is expanded (arrowing within the collapsed menu does not show them).Chrome: Does not expose the <hr> in the accessibility tree.Edge: Exposes the <hr> visually in the page only when the menu is expanded (arrowing within the collapsed menu does not show them).Edge: Does not expose the <hr> in the accessibility tree.Firefox: Does not expose the <hr> in the accessibility tree.Opera: Exposes the <hr> visually in the page only when the menu is expanded (arrowing within the collapsed menu does not show them).Opera: Does not expose the <hr> in the accessibility tree.Safari: Does not expose the <hr> in the accessibility tree.Safari on iOS: Does not expose the <hr> in the accessibility tree.WebView on iOS: Does not expose the <hr> in the accessibility tree.
html.elements.iframe.allow.compute-pressure 📋Chrome5/14/2024674
html.elements.iframe.allow.document-domain 📋Chrome1/23/20182977
html.elements.iframe.allow.local-fonts 📋Chrome6/21/20221367
html.elements.iframe.sandbox.allow-pointer-lock 📋Chrome11/6/20124881
html.elements.input.capture 📋Chrome Android2/27/20134768
html.elements.meta.name.viewport 📋Chrome Android6/27/20125013
html.elements.meta.name.viewport.initial-scale 📋Chrome Android6/27/20125013
html.elements.meta.name.viewport.interactive-widget 📋Chrome Android11/29/20221206
html.elements.meta.name.viewport.interactive-widget.overlays-content 📋Chrome Android11/29/20221206
html.elements.meta.name.viewport.interactive-widget.resizes-content 📋Chrome Android11/29/20221206
html.elements.meta.name.viewport.interactive-widget.resizes-visual 📋Chrome Android11/29/20221206
html.elements.meta.name.viewport.maximum-scale 📋Chrome Android6/27/20125013
html.elements.meta.name.viewport.minimum-scale 📋Chrome Android6/27/20125013
html.elements.meta.name.viewport.user-scalable 📋Chrome Android6/27/20125013
html.elements.meta.name.viewport.viewport-fit 📋Chrome Android4/1/2025352
html.elements.meta.name.viewport.viewport-fit.auto 📋Chrome Android4/1/2025352
html.elements.meta.name.viewport.viewport-fit.cover 📋Chrome Android4/1/2025352
html.elements.meta.name.viewport.width 📋Chrome Android6/27/20125013
html.elements.select.hr_in_select Chrome10/31/2023870
Chrome: Exposes the <hr> visually in the page only when the menu is expanded (arrowing within the collapsed menu does not show them).Chrome: Does not expose the <hr> in the accessibility tree.Edge: Exposes the <hr> visually in the page only when the menu is expanded (arrowing within the collapsed menu does not show them).Edge: Does not expose the <hr> in the accessibility tree.Firefox: Does not expose the <hr> in the accessibility tree.Opera: Exposes the <hr> visually in the page only when the menu is expanded (arrowing within the collapsed menu does not show them).Opera: Does not expose the <hr> in the accessibility tree.Safari: Does not expose the <hr> in the accessibility tree.Safari on iOS: Does not expose the <hr> in the accessibility tree.WebView on iOS: Does not expose the <hr> in the accessibility tree.
html.elements.select.size 📋Chrome12/11/20086307