railway.com
Data from Aug 23, 2026, 7:32 AM UTC 14h old
Web Hosts #18 · 3 measurements · since Aug 21, 2026
Stack
Detected on the same page load as the accessibility pass — the generator
from <meta name="generator"> or the shape of the page,
the host from response headers.
Core Web Vitals field data, url-level
Real Chrome users, 28-day window (2026-07-25 → 2026-08-21). This is what Google measures you on.
Scores
Filmstrip Lighthouse, mobile
How the page drew during the measured load, at 8 points across 3.00 s.
-
375 ms
-
750 ms
-
1.13 s
-
1.50 s
-
1.88 s
-
2.25 s
-
2.63 s
-
3.00 s
Lab metrics Lighthouse, mobile
| Metric | Current | Previous | Change | Best | Worst | Trend |
|---|---|---|---|---|---|---|
| LCP Largest Contentful Paint | 5.42 s | 7.55 s | ↓ -2134 ms (-28.2%) | 5.42 s | 7.55 s | |
| CLS Cumulative Layout Shift | 0.040 | 0.040 | → no change | 0.040 | 0.040 | |
| TBT Total Blocking Time | 3.05 s | 2.00 s | ↑ +1052 ms (+52.5%) | 2.00 s | 3.05 s | |
| FCP First Contentful Paint | 3.37 s | 5.48 s | ↓ -2113 ms (-38.5%) | 3.37 s | 5.48 s | |
| Speed Index | 4.04 s | 5.48 s | ↓ -1440 ms (-26.3%) | 3.83 s | 5.48 s | |
| TTFB Time to First Byte | 620 ms | 653 ms | ↓ -33 ms (-5.1%) | 620 ms | 653 ms |
What LCP is made of observed, unthrottled
A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.
Measured on the trace before throttling is modelled, so these are real durations that will not sum to the 5.42 s above — that figure is a simulation of the same load on a slow phone and connection. Read these for the proportions: which phase dominates.
Field data Chrome UX Report, url-level
Real Chrome users, 28-day trailing window (2026-07-25 → 2026-08-21). This is what Google measures you on.
| Metric | p75 | Rating | Distribution (good / needs work / poor) |
|---|---|---|---|
| LCP CWV | 2.04 s | good | 82.2% good |
| INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run | 598 ms | poor | 37.9% good |
| CLS CWV | 0.030 | good | 83.5% good |
| FCP | 1.72 s | good | 76.8% good |
| TTFB | 596 ms | good | 82.7% good |
Lab vs field
Lab LCP 5.42 s · field p75 2.04 s · real users are 0.38× faster than the lab.
Field history 25 weeks
Weekly p75 from the CrUX History API, backfilled in a single request.
| Week ending | LCP | INP | CLS | FCP | TTFB |
|---|---|---|---|---|---|
| 2026-08-15 | 2.04 s | 586 ms | 0.030 | 1.72 s | 601 ms |
| 2026-08-08 | 2.06 s | 589 ms | 0.030 | 1.74 s | 609 ms |
| 2026-08-01 | 2.12 s | 589 ms | 0.030 | 1.77 s | 627 ms |
| 2026-07-25 | 2.15 s | 578 ms | 0.030 | 1.80 s | 642 ms |
| 2026-07-18 | 2.18 s | 560 ms | 0.030 | 1.82 s | 656 ms |
| 2026-07-11 | 2.21 s | 547 ms | 0.030 | 1.84 s | 673 ms |
| 2026-07-04 | 2.22 s | 530 ms | 0.030 | 1.85 s | 690 ms |
| 2026-06-27 | 2.25 s | 529 ms | 0.040 | 1.88 s | 716 ms |
| 2026-06-20 | 2.29 s | 535 ms | 0.040 | 1.90 s | 733 ms |
| 2026-06-13 | 2.30 s | 540 ms | 0.040 | 1.86 s | 713 ms |
| 2026-06-06 | 2.28 s | 556 ms | 0.040 | 1.84 s | 701 ms |
| 2026-05-30 | 2.29 s | 594 ms | 0.040 | 1.86 s | 671 ms |
Page weight
| Metric | Current | Previous | Change | Best | Worst | Trend |
|---|---|---|---|---|---|---|
| Page Weight | 3.58 MB | 3.95 MB | ↓ -356.8 kB (-9.3%) | 3.58 MB | 3.95 MB | |
| Requests | 284 | 285 | ↓ -1 (-0.4%) | 284 | 285 | |
| Third-party Weight | 423 kB | 423 kB | ↑ +120 B | 423 kB | 426 kB | |
| Third-party CPU | 411 ms | 146 ms | ↑ +265 ms (+181.9%) | 146 ms | 411 ms | |
| Unused JS | 1.02 MB | 991 kB | ↑ +25.7 kB (+2.7%) | 991 kB | 1.02 MB | |
| Unused CSS | 51.9 kB | 51.9 kB | ↑ +38 B (+0.1%) | 51.9 kB | 51.9 kB |
By resource type
Third parties 7 entities
423 kB transferred, 411 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.
Page health
| Metric | Current | Previous | Change | Best | Worst | Trend |
|---|---|---|---|---|---|---|
| Main Thread Work | 9.89 s | 8.34 s | ↑ +1547 ms (+18.5%) | 8.34 s | 9.93 s | |
| Long Tasks | 20 | 20 | → no change | 20 | 20 | |
| DOM Elements | 8,384 | 8,384 | → no change | 8,384 | 8,384 | |
| Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset | 65 | 65 | → no change | 65 | 65 | |
| A11y Failures | 2 | 2 | → no change | 2 | 2 | |
| A11y Failing Nodes | 4 | 4 | → no change | 4 | 4 |
Main thread work
Axe violations axe-core 4.13.0, full rule set
65 violating nodes across 2 rules, 9121 passing. This is a standalone axe run, stricter than the subset Lighthouse folds into its score above — and it is the second tiebreaker in the ranking.
-
moderate
region— All page content should be contained by landmarks 62 nodes -
serious
color-contrast— Elements must meet minimum color contrast ratio thresholds 3 nodes
Accessibility failures 2 of 20 audits
Tracked as a count, not just the score — the weighted score is coarse enough that you can ship a broken component and barely move it.
-
color-contrast— Background and foreground colors do not have a sufficient contrast ratio. 3 nodes -
landmark-one-main— Document does not have a main landmark. 1 node
Hygiene
Changes rarely — which is exactly why a change is worth noticing.
Measurement log
Every stored run for this URL, newest first. Failures are kept as records — "this site was down on Tuesday" is data too.
| When | Perf | LCP | CLS | TBT | Weight | Runs | Spread | Bench | Took |
|---|---|---|---|---|---|---|---|---|---|
| Aug 23, 2026, 7:32 AM UTC | 42 | 5.42 s | 0.040 | 3.05 s | 3.58 MB | 3/3 | ±19 | 2,466 | 77.3s |
| Aug 22, 2026, 6:38 AM UTC | 34 | 7.55 s | 0.040 | 2.00 s | 3.95 MB | 3/3 | ±14 | 2,316 | 66.2s |
| Aug 21, 2026, 5:33 AM UTC | 41 | 6.18 s | 0.040 | 2.99 s | 3.58 MB | 3/3 | ±3 | 2,349 | 67.8s |
Embed this score
Live below, then the markup that produces it. Drop that on any page to show
railway.com's scores, updated whenever this instance
re-measures — more about the component. Don’t forget to bundle the speedlify2-score.js component code into your site!
<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://railway.com/"></speedlify2-score>