forum.donanimhaber.com

The numbers

First visit

0.663 g CO₂e

Return visit

0.050 g CO₂e

Hosting

unknown

LCP

2.10 s

CLS

0.002

TTFB

534 ms

At 10,000 views a month this page emits about 61.2 kg CO₂e a year, roughly 251 km in an average petrol car. The estimate assumes 75% new and 25% returning visitors, a measured cache reload ratio of 8%, and world-average grid intensity. How we calculate this

1. Audit third-party servicessave ~0.164 g/visit (1.44 MB)High impact · moderate effort

   50 third-party domains account for 2.88 MB (64% 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.com479 kB
   • imasdk.googleapis.com445 kB
   • securepubads.g.doubleclick.net265 kB
   • pagead2.googlesyndication.com245 kB
   • static.virgul.com226 kB
   • fonts.gstatic.com148 kB

   WSG 3.5: Treat third parties the same as first parties
2. Reduce JavaScript payloadsave ~0.067 g/visit (590 kB)High impact · moderate effort

   63 scripts total 2.36 MB on the wire (7.70 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.

   • pubads_impl.js204 kB
   • prebid11.25.1.js173 kB
   • js173 kB
   • show_ads_impl_fy2021.js170 kB
   • js164 kB

   WSG 3.2: Minify and remove unused codeWSG 3.3: Modularize bandwidth-heavy components
3. Convert and compress imagessave ~0.043 g/visit (375 kB)High impact · quick fix

   81 images (378 kB) ship in legacy formats (JPEG/PNG/GIF); 1 image exceeds 300 kB apiece.

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

   • cache-v2560 kB
   • itopyaLogoVector_1_300x.png90 kB
   • acfb0632451d4b5b85c5049f95bc6744.png41 kB
   • 2ca6a3518be7496183bea42e865b8589.png39 kB
   • 97528970046409653644.png29 kB

   WSG 2.9: Optimize media to reduce resource use
4. Serve images at the size they displaysave ~0.0067 g/visit (58 kB)Medium impact · quick fix

   3 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.

   • itopyaLogoVector_1_300x.png90 kB
   • 97528970046409653644.png29 kB
   • a57306148df840ea93f765ae17cb8d58.png14 kB

   WSG 2.9: Optimize media to reduce resource use
5. Fix caching for returning visitorssave ~0.0065 g/visit (44 kB)Medium impact · quick fix

   On a repeat visit 175 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.

   • AGSKWxXpSJ8Td3BdXzsg8sFZg4aHGiv7yB0VaMMCa3p2B…Cache-Control: no-cache, no-store, max-age=0, must-revalidate · 73 kB
   • 21728129623Cache-Control: no-cache, no-store, max-age=0, must-revalidate · 71 kB
   • pageviewno Cache-Control header · 10 kB
   • favicon.icoCache-Control: max-age=604800 · 8.7 kB
   • adviewno Cache-Control header · 1.0 kB

   WSG 4.2: Optimize caching and support offline access
6. Defer video and audiosave ~<0.001 g/visit (6.0 kB)Medium impact · quick fix

   3 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).

   • 10907623-144.mp412 kB

   WSG 2.9: Optimize media to reduce resource use
7. 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
8. Upgrade compression beyond gzipsave ~0.030 g/visit (263 kB)Advisory · quick fix

   1.75 MB 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.

   • forumCss317 kB
   • bridge3.784.0_en.html286 kB
   • forum.donanimhaber.com151 kB
   • NoktaPlayer.js111 kB
   • widget_iframe.1227a5674072e080ffb1ba14ac0c107…106 kB

   WSG 4.3: Reduce data transfer with compression
9. Optimize web fontssave ~0.0076 g/visit (67 kB)Advisory · quick fix

   5 font files total 171 kB, 1 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.

   • memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-muw.woff248 kB
   • KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBA.woff243 kB
   • memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSGmu1aB.…36 kB
   • icomoon.ttf23 kB
   • KFOMCnqEu92Fr1ME7kSn66aGLdTylUAMQXC89YmC2DPNW…21 kB

   WSG 2.11: Use optimized web typography
10. Remove references to broken resourcessave ~<0.001 g/visit (356 B)Advisory · quick fix

    13 requests answered 4xx/5xx on load: transfer and connections spent on nothing, on every single visit.

    Delete or fix the references (stale asset URLs, dead third-party tags). Each one is a request the page provably does not need.

    • j.jsHTTP 404 · 0 B
    • j.jsHTTP 404 · 0 B
    • j.jsHTTP 404 · 0 B
    • j.jsHTTP 404 · 0 B
    • j.jsHTTP 404 · 0 B

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

    At 4.48 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
12. Simplify the document structureAdvisory · larger effort

    The page renders 12980 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

Where the bytes are

• JavaScript2.36 MB · 63 req
• Images1.02 MB · 141 req
• HTML547 kB · 7 req
• CSS325 kB · 3 req
• Fonts171 kB · 5 req
• Other25 kB · 5 req
• Data (XHR)17 kB · 14 req
• Audio / video12 kB · 1 req
• Data (fetch)3.8 kB · 12 req

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