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web: give display text an optical size using Inter's opsz axis #835
Description
Component plan: build this from the components named in
docs/designs/822-mui-revamp.md. The rule is "reused, never rebuilt" — composing MUI primitives into a screen wrapper is expected; reimplementing behaviour a shared component already has is not. Say in the PR which row of that table covers this screen.
Part of #674. Inherited from #656 (closed 2026-09-13), question 2 of 3.
Inter everywhere at one optical size gives headings and stat figures no voice.
font-variation-settings: "opsz" 32 on h1, h2, .stat-value buys tighter display cuts at zero
download cost.
Already answered, incidentally (2026-09-02): the installed
@fontsource-variable/interdoes
carry theopszaxis —web/node_modules/@fontsource-variable/inter/files/contains
inter-*-opsz-normal.woff2. The risk that the default entry shipswghtonly does not apply.
Do not re-investigate this.
Interacts with the MUI typography scale decision on this epic — if MUI owns headings after
conversion, this setting has to reach MUI's Typography too, not only bare h1/h2.
Activity
mforce commentedon Sep 14, 2026
Amendment (2026-09-14, from the #822 design doc, PR #862). The premise "the installed Inter does carry the opsz axis, zero download cost, do not re-investigate" is wrong in the way that matters: the files are in the package, but
main.tsximports the default entry whose sevenurl()s are allwght-only faces (grep -c opsz node_modules/@fontsource-variable/inter/index.css= 0).font-variation-settings: "opsz"on the loaded face does nothing. Adopting the axis means switching to theopsz.cssentry, which costs +118.9 KiB of precache across the seven subsets (+24.1 KiB on the latin subset a phone fetches), charged against #825's ceiling. Design direction: D7.2 indocs/designs/822-mui-revamp.md.mforce commentedon Sep 24, 2026
Closed as not planned (owner decision, 2026-09-24). The display optical size change was judged not worth it: it affects six stat figures, and the visible difference is small. PR #948 closed unmerged.
mforce commentedon Sep 24, 2026
Reopened: the close earlier today was a coordinator misreading. The owner meant to skip the screenshot preview, not the change. #835 continues in PR #948.
test(web): fix the precache-ceiling fixture after #835's opsz check
fix(web): pin body/input/table text to Inter's text cut, not just h1-…
fix(web): restore offline caching for the five dropped Inter subsets
docs(822): fix the D7.2 amendment to match the shipped opsz fix