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iotcentral.io loads faster with WebSpeed
Measured PageSpeed before and after WebSpeed optimization — no plugins, no migration.
Only this moved on this check. Everything else stayed inside measurement noise, and we do not call noise a win. We keep changing what our proxy does and re-measure pages as we go, so a later check can look different. All 32 changes from this one are listed below.
From the measured LCP gain: −0.7 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: −0.7 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: −0.7 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: ≈ 1.1 → 1 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.
Fastest quarter 56+ · you 54
Fastest quarter ≤ 6.8 s · you 7.0 s
Fastest quarter ≤ 12.2 s · you 14.3 s
Fastest quarter ≤ 1.5 MB · you 2.2 MB
Fastest quarter ≤ 1.8 MB · you 2.6 MB
Based on 120 Squarespace sites WebSpeed has measured, as they are, without our optimization. Cards marked “all platforms” compare with all 1177 sites we’ve measured, not just Squarespace ones. Updated 25 Sep 2026.
Speed
what the visitor sees| Metric | Now | Fast | Δ |
|---|---|---|---|
| PageSpeed scoreblends the five below | 54 | 52 | −2 |
| 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 | 4.0 s | 4.4 s | +11% |
| 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 | 14.3 s | 13.0 s | No change beyond run-to-run noise. |
| 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 | 7.0 s | 8.8 s | +25% |
| 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 | 300 ms | 290 ms | No change beyond run-to-run noise. |
| 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 | 0.03 | 0.001 | −0.03 |
| 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. | Text | Text | same |
| Time until the first byte of the HTML arrived.TTFB | 14 ms | 24 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 | 1.6 s | 3.9 s | +148% |
Page weight
loaded during the test| Metric | Now | Fast | Δ |
|---|---|---|---|
| Files the browser downloaded during the test. | 114 | 111 | No change beyond run-to-run noise. |
| The page itself, before anything it references. | 150 KB | 146 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. | 701.4 MB | 691.2 MB | −11% |
| Stylesheets downloaded during the test. | 14169 KB | 13168 KB | No change beyond run-to-run noise. |
| Web font files downloaded during the test. | 432 KB | 431 KB | No change beyond run-to-run noise. |
| Images downloaded during the test. Images below the fold may load later, after the test. | 20485 KB | 20485 KB | No change beyond run-to-run noise. |
| Third-partyother companies’ servers | |||
| Distinct third-party domains the page downloaded from — analytics, chat, embeds, fonts, CDNs. | 15 | 13 | −2 |
| Bytes downloaded from those third-party domains. | 2.1 MB | 1.9 MB | No change beyond run-to-run noise. |
Speed
what the visitor sees| Metric | Now | Fast | Δ |
|---|---|---|---|
| PageSpeed scoreblends the five below | 66 | 71 | +5 |
| 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 | 0.9 s | 0.6 s | −30% |
| 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 | 3.1 s | 2.9 s | No change beyond run-to-run noise. |
| 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 | 2.1 s | 2.4 s | No change beyond run-to-run noise. |
| 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 | 290 ms | 220 ms | −24% |
| 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 | 0.013 | 0.011 | 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. | Text | Text | same |
| Time until the first byte of the HTML arrived.TTFB | 12 ms | 24 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 | 1.6 s | 2.4 s | +53% |
Page weight
loaded during the test| Metric | Now | Fast | Δ |
|---|---|---|---|
| Files the browser downloaded during the test. | 122 | 119 | No change beyond run-to-run noise. |
| The page itself, before anything it references. | 150 KB | 146 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. | 701.4 MB | 691.3 MB | −10% |
| Stylesheets downloaded during the test. | 14169 KB | 13168 KB | No change beyond run-to-run noise. |
| Web font files downloaded during the test. | 432 KB | 432 KB | No change beyond run-to-run noise. |
| Images downloaded during the test. Images below the fold may load later, after the test. | 28809 KB | 28656 KB | −19% |
| Third-partyother companies’ servers | |||
| Distinct third-party domains the page downloaded from — analytics, chat, embeds, fonts, CDNs. | 15 | 13 | −2 |
| Bytes downloaded from those third-party domains. | 2.4 MB | 2.1 MB | −12% |
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.
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