alexa.amazon.com/about

The numbers

First visit

1.57 g CO₂e

Return visit

1.04 g CO₂e

Hosting

unknown

LCP

1.04 s

CLS

0.055

TTFB

213 ms

At 10,000 views a month this page emits about 172.1 kg CO₂e a year, roughly 705 km in an average petrol car. The estimate assumes 75% new and 25% returning visitors, a measured cache reload ratio of 66%, and world-average grid intensity. How we calculate this

1. Audit third-party servicessave ~0.712 g/visit (5.25 MB)High impact · moderate effort

   5 third-party domains account for 10.49 MB (99% 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.

   • m.media-amazon.com10.49 MB
   • images-na.ssl-images-amazon.com4.7 kB
   • unagi.amazon.com1.7 kB
   • fls-na.amazon.com1.0 kB
   • 0 B

   WSG 3.5: Treat third parties the same as first parties
2. Convert and compress imagessave ~0.574 g/visit (4.23 MB)High impact · quick fix

   25 images (9.39 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.

   • ZWM4OTIxOWMt6.96 MB
   • YzgzMWRmYmUt._CB774774078_.png1.42 MB
   • ZGZmMmE5OWQt313 kB
   • YjlhYzg1MTIt._CB796243581_.jpg198 kB
   • MjI0MjRjYmYt._CB796243581_.jpg149 kB

   WSG 2.9: Optimize media to reduce resource use
3. Fix caching for returning visitorssave ~0.258 g/visit (1.74 MB)High impact · quick fix

   On a repeat visit 6.95 MB of static assets were re-downloaded instead of coming from cache.

   Serve static assets with Cache-Control: public, max-age=31536000, immutable and versioned filenames so returning visitors download almost nothing.

   • ZWM4OTIxOWMtCache-Control: max-age=86400,public · 6.95 MB
   • ATVPDKIKX0DER:133-5315204-3976212:N5WRHQHRZH9…no Cache-Control header · 149 B
   • ATVPDKIKX0DER:133-5315204-3976212:N5WRHQHRZH9…no Cache-Control header · 149 B
   • ATVPDKIKX0DER:133-5315204-3976212:N5WRHQHRZH9…no Cache-Control header · 149 B
   • ATVPDKIKX0DER:133-5315204-3976212:N5WRHQHRZH9…no Cache-Control header · 149 B

   WSG 4.2: Optimize caching and support offline access
4. Serve images at the size they displaysave ~0.048 g/visit (352 kB)High impact · quick fix

   6 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.

   • ZWM4OTIxOWMt6.96 MB
   • YzgzMWRmYmUt._CB774774078_.png1.42 MB
   • YjlhYzg1MTIt._CB796243581_.jpg198 kB
   • MjI0MjRjYmYt._CB796243581_.jpg149 kB
   • NWU2NzA3YmMt._CB796243581_.jpg149 kB

   WSG 2.9: Optimize media to reduce resource use
5. Lazy-load below-the-fold mediasave ~0.014 g/visit (100 kB)High impact · quick fix

   9 below-the-fold images/iframes (2.00 MB) download immediately for every visitor.

   Add loading="lazy" to below-fold img and iframe elements (and keep it off the LCP image). Browsers then fetch them only when scrolling approaches.

   • YzgzMWRmYmUt._CB774774078_.png1.42 MB
   • YjlhYzg1MTIt._CB796243581_.jpg198 kB
   • MjI0MjRjYmYt._CB796243581_.jpg149 kB
   • NWU2NzA3YmMt._CB796243581_.jpg149 kB
   • MDQ2MmZlMDEt._CB796243581_.png50 kB

   WSG 2.9: Optimize media to reduce resource use
6. Optimize web fontssave ~0.042 g/visit (310 kB)Medium impact · quick fix

   23 font files total 887 kB.

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

   • EmberModernDisplayV1.1-Bold.woff297 kB
   • EmberModernDisplayStd-Bold.woff278 kB
   • EmberModernDisplayStd-Regular.woff278 kB
   • -w6hwcDxlefrOYI.woff243 kB
   • NvWNxKhmDbgI1lq.woff243 kB

   WSG 2.11: Use optimized web typography
7. Reduce JavaScript payloadsave ~0.0056 g/visit (41 kB)Medium impact · moderate effort

   14 scripts total 164 kB on the wire (685 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.

   • 11I0WXrZVoL._RC%7C61xJcNKKLXL.js,11Y+5x+kkTL.…101 kB
   • 71wknIcACtL.js36 kB
   • 31Qk3N8Vf-L.js4.1 kB
   • 31J+-jfT4VL.js4.0 kB
   • 215h87l68bL.js3.8 kB

   WSG 3.2: Minify and remove unused codeWSG 3.3: Modularize bandwidth-heavy components
8. Defer video and audioMedium impact · quick fix

   1 video autoplays; 4 videos preload data without preload="none".

   Never autoload media: use preload="none" with a poster image, load players on interaction, and stream in an efficient codec (AV1/HEVC).

   • ZjcxMWJjM2It0 B
   • ZTQ2M2Y1YzAt0 B
   • ZTQ1ZGU2MTgt0 B
   • MDc1NDgzMGMt0 B
   • MzU5MDVlNzEt0 B

   WSG 2.9: Optimize media to reduce resource use
9. Verify your hosting energyMedium impact · moderate effort

   This host has not published renewable energy evidence with the Green Web Foundation, so its energy source is unknown.

   Choose a provider listed in the Green Web Directory, or ask your current provider to publish evidence (and a carbon.txt). This cuts the data-center share of every single page view.

   • carbon.txtNo carbon.txt found at the site root; publishing one is the lightest first step.

   WSG 4.1: Use sustainable hosting
10. Collapse the redirect chainMedium impact · quick fix

    The address that was scanned goes through 2 redirects before the document is served, ending at https://alexa.amazon.com/about. 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://alexa.com/redirects to https://alexa.amazon.com/about

    WSG 4.4: Setup necessary error pages and redirection links
11. Set a page-weight budgetAdvisory · moderate effort

    At 10.56 MB per view this page rates F. 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

Where the bytes are

• Images9.40 MB · 32 req
• Fonts887 kB · 23 req
• JavaScript164 kB · 14 req
• HTML66 kB · 1 req
• CSS45 kB · 7 req
• Other1.7 kB · 3 req
• Data (fetch)413 B · 1 req
• Audio / video0 B · 5 req