2027 Web Platform Feature Ranking

Ranked proposals (top = most important)

1. Web app installation via <install> and navigator.install()

   Prompts the user to install a progressive web app.
2. Speculation Rules API

   Hints to the browser to proactively download pages in the background so they appear instantly when the user navigates to them.
3. CSS var() in size container queries

   Such as @container (width >= var(-⁠-⁠min-⁠width)).
4. CSS flex-⁠wrap: balance

   Distributes items in a multi-line flex container so each line has about the same number of items.
5. Interest invokers

   The interestfor attribute triggers actions on a target element when the user shows interest, such as via hover, focus, or long-press.