Re: [csswg-drafts] [filter-effects-2] Progressive blur for `blur()` (#13285)

Thanks Sebastian — I think you’re right that the API should be future-proof and naturally accommodate the other logical blur variants from #11134.

Given that, I’m going to revise the proposal toward a dedicated function `linear-blur()` with gradient-like stop list syntax, rather than overloading `blur()`. 

In the interest of momentum, I’d still propose tackling progressive (linear) blur first as the initial implementation focus (common 0 → N scrim case, default `to bottom`), but within a syntax that can later extend to additional stops/offsets and `radial-blur()` / `conic-blur()`, etc.

If you see any pitfalls with `linear-blur()` as the long-term shape (parsing, perf/implementation constraints, interactions with `backdrop-filter`), I’d love to hear them.

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Received on Friday, 2 January 2026 11:34:13 UTC