roddenberry.x.io

The numbers

First visit

0.360 g CO₂e

Return visit

0.0034 g CO₂e

Hosting

verified green

LCP

552 ms

CLS

0.001

TTFB

230 ms

At 10,000 views a month this page emits about 32.5 kg CO₂e a year, roughly 133 km in an average petrol car. The estimate assumes 75% new and 25% returning visitors, a measured cache reload ratio of 1%, and world-average grid intensity. How we calculate this

1. Serve images at the size they displaysave ~0.065 g/visit (710 kB)High impact · quick fix

   12 images are encoded at more than twice the pixels the layout shows, even accounting for this viewport's pixel density.

   Generate multiple sizes and let the browser pick with srcset/sizes; a 4000px original behind a 400px slot spends bandwidth no screen displays.

   • image211 kB
   • image174 kB
   • image161 kB
   • image128 kB
   • image65 kB

   WSG 2.9: Optimize media to reduce resource use
2. Convert and compress imagessave ~0.053 g/visit (586 kB)High impact · quick fix

   25 images (1.30 MB) ship in legacy formats (JPEG/PNG/GIF).

   Serve AVIF (or WebP) with responsive srcset sizes, and re-compress oversized files. AVIF typically halves JPEG weight at the same visual quality.

   • bg.jpg866 kB
   • hqdefault.jpg41 kB
   • hqdefault.jpg39 kB
   • hqdefault.jpg36 kB
   • hqdefault.jpg35 kB

   WSG 2.9: Optimize media to reduce resource use
3. Audit third-party servicessave ~0.021 g/visit (229 kB)Medium impact · moderate effort

   2 third-party domains account for 458 kB (15% of the page).

   Remove services that no longer earn their place; load the rest on interaction (facades for embeds, delayed consent-gated tags). Each third party is also a privacy and performance dependency.

   • i.ytimg.com436 kB
   • noembed.com22 kB

   WSG 3.5: Treat third parties the same as first parties
4. Reduce JavaScript payloadsave ~0.0062 g/visit (68 kB)Medium impact · moderate effort

   20 scripts total 274 kB on the wire (868 kB decoded). Bundles this size usually carry a lot of unused code.

   Split bundles per route, tree-shake dependencies, and audit with a bundle analyzer or coverage profile. A 25% cut is a conservative target for bundles this size.

   • framework-5666885447fdc3cc.js46 kB
   • 8467-e28d57c129a48f74.js44 kB
   • main-5e9d998aca839545.js33 kB
   • 585-604206291d4c6111.js33 kB
   • 5213-37f02b79f9d16f19.js22 kB

   WSG 3.2: Minify and remove unused codeWSG 3.3: Modularize bandwidth-heavy components
5. Upgrade compression beyond gzipsave ~0.0040 g/visit (44 kB)Advisory · quick fix

   295 kB of text ships gzip-compressed; Brotli or Zstandard would cut roughly another 15-20%, and browsers without them fall back to gzip automatically.

   Serve precompressed Brotli for static text assets (highest level, compressed at build time) and enable Brotli or zstd for dynamic responses; keep gzip only as the fallback.

   • framework-5666885447fdc3cc.js46 kB
   • 8467-e28d57c129a48f74.js44 kB
   • main-5e9d998aca839545.js33 kB
   • 585-604206291d4c6111.js33 kB
   • 5213-37f02b79f9d16f19.js22 kB

   WSG 4.3: Reduce data transfer with compression
6. Optimize web fontssave ~0.0028 g/visit (30 kB)Advisory · quick fix

   3 font files total 102 kB, 3 not in WOFF2.

   Subset fonts to used glyphs, prefer one variable font over multiple weights, serve WOFF2 only, and consider system fonts for UI text.

   • SanFranciscoDisplay-Regular.183ee967.otf77 kB
   • Okuda%20Italic.3fef46e9.ttf13 kB
   • Okuda.dac9f0de.ttf11 kB

   WSG 2.11: Use optimized web typography
7. Set a page-weight budgetAdvisory · moderate effort

   At 2.97 MB per view this page rates D. The findings above list where the weight is.

   Agree a transfer budget (e.g. under 975 kB reaches a B), enforce it in CI, and re-scan after each change to hold the line.

   WSG 3.1: Set goals based on performance and energy impact
8. Remove the entry redirectAdvisory · quick fix

   The address that was scanned goes through 1 redirect before the document is served, ending at https://roddenberry.x.io/. Every hop is a full round trip on a connection that has not warmed up yet.

   Point links, sitemaps and canonical tags at the final address, and make the host redirect in one hop rather than chaining http to https to www.

   • https://x.io/redirects to https://roddenberry.x.io/

   WSG 4.4: Setup necessary error pages and redirection links

Where the bytes are

• Images2.55 MB · 42 req
• JavaScript274 kB · 20 req
• Fonts102 kB · 3 req
• Data (fetch)23 kB · 26 req
• CSS21 kB · 3 req
• HTML5.8 kB · 1 req