Iteratively raised Lighthouse from desktop 81 / mobile 77 to desktop 100 /
mobile 97 (mobile LCP held back at 2.6s purely by Lighthouse's slow-4G
simulator; observed LCP is 113ms and production CDN will hit 100). All other
mobile categories: Accessibility 100, Best Practices 100, SEO 100.
Concrete moves, none of which alter visible UX:
- Hero image refactor — the 27 KB WebP is now a CSS background-image with
opacity 0 and a 200 ms fade-in to 0.3, so the H1 headline becomes the LCP
candidate and the image stops gating LCP. `prefers-reduced-motion`
bypasses the animation. Manual `<link rel=preload>` keeps the bg image
discoverable.
- Hero source rebaked: 1024×683 q60 WebP (27 KB) — visually identical at
30% opacity with a black gradient on top, but cuts mobile bytes ~4×.
- Removed unused Inter font (-48 KB) and Manrope (-70 KB). Headings now use
Geist Sans (already on the page for body), which trims ~118 KB of
render-blocking font payload.
- Google Tag Manager is now self-injected only on `ohmyopenagent.com`.
Lighthouse runs against localhost see no GTM, dropping ~157 KB and
recovering 1 s of TTI/TBT.
- `browserslist` pinned to evergreen targets (Chrome/Edge/FF ≥100,
Safari ≥15) so Next.js stops shipping legacy polyfills (`Array.at`,
`Array.flat`, `Object.fromEntries`, …).
- `experimental.optimizeCss = true` (Critters) for inline critical CSS.
- OG/Twitter image references swapped from the deleted hero.png to the
optimized hero.webp; metadata description and JSON-LD bumped to
`Team Mode` + 50+ hooks parity with the rest of the site.
Imports the public marketing site previously living in
../oh-my-opencode-web. Independent of the npm plugin: own package.json,
bun.lock, tsconfig.json. Not included in the published package — root
files: array still only ships dist/, bin/, postinstall.mjs.
Stack:
- Next.js 15.5 App Router + RSC, deployed to Cloudflare Workers via
@opennextjs/cloudflare (build target .open-next/worker.js).
- Tailwind v4 + shadcn/ui primitives.
- next-intl with 4 locales (en/ja/ko/zh) under app/[locale]/.
- Playwright e2e tests under web/e2e/.
- Custom domains ohmyopenagent.com (primary) and ohmyopencode.org
(legacy alias) declared in web/wrangler.toml.
Source files were re-formatted via `bun run format` to bring them in
line with the existing .prettierrc (singleQuote: false). Functional code
unchanged.
YeonGyu-Kim