webrazzi.com

The numbers

First visit

0.346 g CO₂e

Return visit

0.025 g CO₂e

Hosting

verified green

LCP

532 ms

CLS

0

TTFB

256 ms

At 10,000 views a month this page emits about 31.9 kg CO₂e a year, roughly 131 km in an average petrol car. The estimate assumes 75% new and 25% returning visitors, a measured cache reload ratio of 7%, and world-average grid intensity. How we calculate this

1. Audit third-party servicessave ~0.073 g/visit (784 kB)High impact · moderate effort

   25 third-party domains account for 1.57 MB (55% 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.

   • www.googletagmanager.com361 kB
   • securepubads.g.doubleclick.net267 kB
   • tpc.googlesyndication.com261 kB
   • cdn.dataroid.com238 kB
   • pagead2.googlesyndication.com133 kB
   • s2.getsitecontrol.com84 kB

   WSG 3.5: Treat third parties the same as first parties
2. Reduce JavaScript payloadsave ~0.030 g/visit (327 kB)High impact · moderate effort

   24 scripts total 1.31 MB on the wire (4.29 MB 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.

   • dataroid-websdk.js238 kB
   • pubads_impl.js206 kB
   • js192 kB
   • gtm.js168 kB
   • runtime.5ee47cc.js84 kB

   WSG 3.2: Minify and remove unused codeWSG 3.3: Modularize bandwidth-heavy components
3. Optimize web fontssave ~0.018 g/visit (198 kB)Medium impact · quick fix

   3 font files total 565 kB.

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

   • Inter-italic.var.woff2239 kB
   • Inter-roman.var.woff2225 kB
   • Inter-Regular.woff2101 kB

   WSG 2.11: Use optimized web typography
4. Convert and compress imagessave ~0.011 g/visit (121 kB)Medium impact · quick fix

   5 images (269 kB) 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.

   • 7343844286678077725261 kB
   • w-lazy-load-951.jpg7.7 kB
   • simple.gif341 B
   • png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAJCA…0 B
   • nGuaUD6b4BgkltpD8AAAAAElFTkSuQmCC0 B

   WSG 2.9: Optimize media to reduce resource use
5. Fix caching for returning visitorssave ~0.0040 g/visit (33 kB)Medium impact · quick fix

   On a repeat visit 132 kB 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.

   • 15959954503609286909Cache-Control: public, max-age=31536000 · 108 kB
   • gc00flWitZZjz8qe1_LZ6jEKqKTgyg0GJmZtTMLaTnA.jsCache-Control: public, max-age=31536000 · 22 kB
   • fyntvemfcoCache-Control: no-cache, no-store · 1.1 kB
   • l46vrlwm.jsCache-Control: public, max-age=0 · 780 B
   • simple.gifCache-Control: no-cache, no-store, must-revalidate · 341 B

   WSG 4.2: Optimize caching and support offline access
6. Serve images at the size they displaysave ~<0.001 g/visit (4.2 kB)Medium impact · quick fix

   20 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.

   • w-lazy-load-951.jpg7.7 kB
   • w-lazy-load-951.jpg7.7 kB
   • w-lazy-load-951.jpg7.7 kB
   • w-lazy-load-951.jpg7.7 kB
   • w-lazy-load-951.jpg7.7 kB

   WSG 2.9: Optimize media to reduce resource use
7. Upgrade compression beyond gzipsave ~0.0055 g/visit (59 kB)Advisory · quick fix

   394 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.

   • dataroid-websdk.js238 kB
   • build.min.css74 kB
   • desktop.min.css15 kB
   • v4513226cdae34746b4dedf0b4dfa099e178179150949612 kB
   • webrazzi-20-logo-light.svg9.4 kB

   WSG 4.3: Reduce data transfer with compression
8. Set a page-weight budgetAdvisory · moderate effort

   At 2.86 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
9. Simplify the document structureAdvisory · larger effort

   The page renders 1619 DOM elements, above the 1,500 guideline. Large trees cost memory and CPU on every visitor's device.

   Flatten wrapper markup, render long lists virtually or paginate, and prefer semantic elements over nested divs.

   WSG 3.6: Ensure code follows good semantic practices
10. Upgrade connections to HTTP/2 or HTTP/3Advisory · quick fix

    1 host serves five or more resources over HTTP/1.1, paying per-request connection and header overhead newer protocols eliminate.

    Enable HTTP/2 (or HTTP/3) on the server or move the assets behind a CDN that speaks it; multiplexing makes many small requests nearly free.

    • api.dataroid.com5 requests over http/1.1

    WSG 3.1: Set goals based on performance and energy impact

Where the bytes are

• JavaScript1.31 MB · 24 req
• Images774 kB · 35 req
• Fonts565 kB · 3 req
• CSS89 kB · 2 req
• Data (XHR)40 kB · 15 req
• HTML31 kB · 4 req
• Data (fetch)26 kB · 16 req
• Other24 kB · 6 req

Trend