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donstroy.moscow loads faster with WebSpeed
Measured PageSpeed before and after WebSpeed optimization — no plugins, no migration.
Speed-up in Speed Index, taken from the weakest of the last checks of this page. A single check typically differs from the next by around 30%, so we quote the floor rather than the best or the average — and claim no speed-up at all if any of those checks did not show one.
From the measured LCP gain: −8.7 s.
Core Web Vitals are a Google ranking signal, but work as a “tiebreaker” — they matter most when two pages are roughly equal in relevance and content. The biggest SEO benefit comes from moving out of the Poor zone (score < 50).
From the measured LCP gain: −8.7 s.
Google / Deloitte (2019): 0.1 s improvement → +8% conversions in retail. Portent: each extra second of load time reduces conversion rate ~4%.
From the measured LCP gain: −8.7 s.
Based on Google data: pages loading in 3 s vs 1 s show ~32% higher bounce rate. Estimate scales proportionally to LCP improvement and is site-specific.
From the measured page weight: ≈ 6.9 → 3.9 g per visit.
Transferred bytes × ≈0.5 g of CO₂ per MB, a common average for networks and devices. The real figure depends on the hosting and the visitor’s connection.
Forecasts, not measurements: measured gains × published studies — tap any underlined label for the source.
Lighthouse recording of the original page under real mobile throttling. The right panel replays the same frames at the measured Speed Index ratio (1.5× faster). Played back 4.5× faster than real time — both panels equally.
Fastest quarter 72+ · you 31
Fastest quarter 94+ · you 49
Fastest quarter ≤ 3.8 s · you 17.6 s
Fastest quarter ≤ 1.0 s · you 3.4 s
Fastest quarter ≤ 4.8 s · you 33.2 s
Fastest quarter ≤ 1.1 s · you 2.3 s
Fastest quarter ≤ 1.5 MB · you 13.8 MB
Fastest quarter ≤ 1.7 MB · you 13.4 MB
Based on 6220 sites WebSpeed has measured, across every platform, as they are, without our optimization. Updated 31 Oct 2026.
Speed
what the visitor sees| Metric | Now | Fast | Δ |
|---|---|---|---|
| PageSpeed scoreblends the five below | 31 | 34 | +3 |
| First Contentful Paint. The moment the browser renders the first piece of real content — the first sign to the visitor that the page is loading.≤ 1.8s | 5.6 s | 4.9 s | −12% |
| Largest Contentful Paint. The time it takes for the largest image or text block in the viewport to render — one of Google's three Core Web Vitals.≤ 2.5s | 33.2 s | 16.9 s | −49% |
| How quickly the visible part of the page fills in during load, averaged over time — a lab metric that rewards showing content sooner.≤ 3.4s | 17.6 s | 11.7 s | −34% |
| Total Blocking Time. The total time the main thread was blocked by long tasks during load — the lab metric that stands in for real-world responsiveness.≤ 200ms | 1,300 ms | 1,080 ms | −17% |
| Cumulative Layout Shift. A score for how much visible content unexpectedly jumps around while the page loads — one of Google's three Core Web Vitals.≤ 0.1 | 0 | 0 | No change beyond run-to-run noise. |
| LCP breakdownobserved load, no throttling | |||
| What the largest visible element was — an image or a block of text. The two are sped up by different means. | Image | Image | same |
| Time until the first byte of the HTML arrived.TTFB | 3 ms | 13 ms | No change beyond run-to-run noise. |
| Time between the first byte and the moment the browser started downloading the LCP image. Long when the image is found late — lazy-loaded, set from CSS or JS.until the image is requested | 142 ms | 416 ms | +192% |
| Time spent downloading the LCP image itself — its weight and the connection.downloading the image | 176 ms | 85 ms | No change beyond run-to-run noise. |
| Time between the resource being ready and the element being painted — blocked by CSS, fonts or scripts.until it is painted | 2.0 s | 2.1 s | No change beyond run-to-run noise. |
Page weight
loaded during the test| Metric | Now | Fast | Δ |
|---|---|---|---|
| Files the browser downloaded during the test. | 204 | 166 | −38 |
| The page itself, before anything it references. | 6115 KB | 6117 KB | No change beyond run-to-run noise. |
| Scripts downloaded during the test. Fewer can mean deferred past the test window, not removed from the site. | 433.6 MB | 382.9 MB | −19% |
| Stylesheets downloaded during the test. | 4200 KB | 3185 KB | No change beyond run-to-run noise. |
| Web font files downloaded during the test. | 4122 KB | 379 KB | −35% |
| Images downloaded during the test. Images below the fold may load later, after the test. | 1089.6 MB | 784.3 MB | −55% |
| Third-partyother companies’ servers | |||
| Distinct third-party domains the page downloaded from — analytics, chat, embeds, fonts, CDNs. | 18 | 15 | −3 |
| Bytes downloaded from those third-party domains. | 3.7 MB | 2.5 MB | −32% |
What holds the main thread
Lighthouse attribution, lab run| Time a script kept the browser busy beyond 50 ms per task — the same pieces Lighthouse adds up into Total Blocking Time. While it lasts, taps and clicks wait. Counted on the recorded run, so the total can differ from the simulated TBT above. | Now | Fast |
|---|---|---|
| yandex.ruThird-party service | 1,512 ms | 709 ms |
| JivochatThird-party service · Customer success | 233 ms | 237 ms |
| Yandex CDNThird-party service · CDN | 138 ms | 0 ms |
| The site’s own scripts, plugins and services not listed above (each under 50 ms or past the top three), and browser work Lighthouse could not tie to any script.Site’s own code, smaller scripts, unattributed | 374 ms | 374 ms |
Fast removes nothing: every script still loads and runs, and Fast starts what it safely can after the page is ready to use.
Each number comes from one lab run. A script that ran after the run ended shows 0 ms.
Already on this site
Original page, before Fast- No speed tools recognisedNo caching plugin, CDN or speed host left a trace in the page’s code or headers
- Main image is marked high priorityMissing
- Text stays visible while web fonts loadMissing
- Main image is in the HTML, not added by a scriptOK
- Main image is not lazy-loadedOK
- Admin area
/bitrix/admin/pass through Fast unchanged and are never cached
Tools are recognised from the page’s code and response headers. A tool that leaves no trace there is not listed.
“OK” means Lighthouse found nothing to fix on the original page — not that someone switched it on.
Speed
what the visitor sees| Metric | Now | Fast | Δ |
|---|---|---|---|
| PageSpeed scoreblends the five below | 49 | 61 | +12 |
| First Contentful Paint. The moment the browser renders the first piece of real content — the first sign to the visitor that the page is loading.≤ 1.8s | 0.4 s | 0.4 s | No change beyond run-to-run noise. |
| Largest Contentful Paint. The time it takes for the largest image or text block in the viewport to render — one of Google's three Core Web Vitals.≤ 2.5s | 2.3 s | 1.2 s | −47% |
| How quickly the visible part of the page fills in during load, averaged over time — a lab metric that rewards showing content sooner.≤ 3.4s | 3.4 s | 4.2 s | +24% |
| Total Blocking Time. The total time the main thread was blocked by long tasks during load — the lab metric that stands in for real-world responsiveness.≤ 200ms | 870 ms | 570 ms | −34% |
| Cumulative Layout Shift. A score for how much visible content unexpectedly jumps around while the page loads — one of Google's three Core Web Vitals.≤ 0.1 | 0.11 | 0.11 | No change beyond run-to-run noise. |
| LCP breakdownobserved load, no throttling | |||
| What the largest visible element was — an image or a block of text. The two are sped up by different means. | Image | Image | same |
| Time until the first byte of the HTML arrived.TTFB | 3 ms | 3 ms | No change beyond run-to-run noise. |
| Time between the first byte and the moment the browser started downloading the LCP image. Long when the image is found late — lazy-loaded, set from CSS or JS.until the image is requested | 127 ms | 59 ms | No change beyond run-to-run noise. |
| Time spent downloading the LCP image itself — its weight and the connection.downloading the image | 336 ms | 58 ms | −83% |
| Time between the resource being ready and the element being painted — blocked by CSS, fonts or scripts.until it is painted | 215 ms | 374 ms | +74% |
Page weight
loaded during the test| Metric | Now | Fast | Δ |
|---|---|---|---|
| Files the browser downloaded during the test. | 235 | 151 | −84 |
| The page itself, before anything it references. | 6115 KB | 6117 KB | No change beyond run-to-run noise. |
| Scripts downloaded during the test. Fewer can mean deferred past the test window, not removed from the site. | 433.6 MB | 372.6 MB | −28% |
| Stylesheets downloaded during the test. | 4200 KB | 2159 KB | −20% |
| Web font files downloaded during the test. | 4122 KB | 379 KB | −35% |
| Images downloaded during the test. Images below the fold may load later, after the test. | 1409.2 MB | 735.2 MB | −43% |
| Third-partyother companies’ servers | |||
| Distinct third-party domains the page downloaded from — analytics, chat, embeds, fonts, CDNs. | 17 | 14 | −3 |
| Bytes downloaded from those third-party domains. | 4.2 MB | 2.2 MB | −48% |
What holds the main thread
Lighthouse attribution, lab run| Time a script kept the browser busy beyond 50 ms per task — the same pieces Lighthouse adds up into Total Blocking Time. While it lasts, taps and clicks wait. Counted on the recorded run, so the total can differ from the simulated TBT above. | Now | Fast |
|---|---|---|
| yandex.ruThird-party service | 1,054 ms | 347 ms |
| JivochatThird-party service · Customer success | 121 ms | 183 ms |
| Yandex CDNThird-party service · CDN | 104 ms | 0 ms |
| The site’s own scripts, plugins and services not listed above (each under 50 ms or past the top three), and browser work Lighthouse could not tie to any script.Site’s own code, smaller scripts, unattributed | 269 ms | 301 ms |
Fast removes nothing: every script still loads and runs, and Fast starts what it safely can after the page is ready to use.
Each number comes from one lab run. A script that ran after the run ended shows 0 ms.
Already on this site
Original page, before Fast- No speed tools recognisedNo caching plugin, CDN or speed host left a trace in the page’s code or headers
- Main image is marked high priorityMissing
- Text stays visible while web fonts loadMissing
- Main image is in the HTML, not added by a scriptOK
- Main image is not lazy-loadedOK
- Admin area
/bitrix/admin/pass through Fast unchanged and are never cached
Tools are recognised from the page’s code and response headers. A tool that leaves no trace there is not listed.
“OK” means Lighthouse found nothing to fix on the original page — not that someone switched it on.
PageSpeed scores are measured by Google PageSpeed Insights and are not guaranteed: they vary run to run and depend on network, device and third-party code. How to read this report
The screen fills at least 1.5× sooner on mobile, the page weighs 7.8 MB instead of 13.8 MB and the main content appears in 16.9 s instead of 33.2 s on mobile.
Still on the site itself: the main image is not marked high priority and text is hidden while web fonts load — listed under “Already on this site” in Speed metrics.
Edit the page code yourself — the report lists the changes. Get this speed for your visitors — WebSpeed Fast, 14 days free.
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