Baseline stages: two or three?

Hello, WebDX!
Hope you all having a good week.

I have a quick question of the stages of Baseline. The definition on
the WebDX website [1] says:

> Baseline features are available across popular browsers. Baseline has two stages:
>
> * **Newly available**: The feature works across the latest devices and browser versions. The feature might not work in older devices or browsers. Indicated with a blue icon.
> * **Widely available**: The feature is well established and works across many devices and browser versions. It’s been available across browsers for at least 2½ years (30 months). Indicated with a green icon.
>
> Prior to being newly available, a feature has **Limited availability** when it's not yet available across all browsers.

while web.dev Baseline page [2] says:

> Baseline has three stages:
>
> * **Limited availablity:** The feature is not available in all the core browsers.
> * **Newly available:** The feature becomes supported by all of the core browsers, and is therefore interoperable.
> * **Widely available:** 30 months has passed since the newly interoperable date. The feature can be used by most sites without worrying about support.

and I wonder which to follow when I explain Baseline to people.

I really like WebDX's explanation of "across browsers" as it captures
the essence of "Baseline." However, when I think about explaining
Baseline in slides or bullet points, presenting it with three distinct
labels feels much easier to me.

So, what do you folks think? What's the group's perspective on this?

Thanks a lot,
Masataka

[1] https://web-platform-dx.github.io/web-features/#how-do-features-become-part-of-baseline%3F
[2] https://web.dev/baseline#how-do-things-become-baseline

-- 
Masataka Yakura
<myakura.web@gmail.com>

Received on Sunday, 13 July 2025 16:05:49 UTC