speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time. Follow us on Mastodon or Bluesky.

Charts Compare Measurement runs Embed a score Open to Work

traintimes.org.uk

https://traintimes.org.uk/

100PERF 100A11Y 100BEST 100SEO ✓AXE ✓CWV

Ranks Overall #1 traintimes.org.uk #1

Data from Oct 30, 2026, 10:08 PM UTC old Measured once a day · 1 run since Oct 30, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

Self-hosted · nginx Hosted by Self-hosted
Rendered On each request Document changed between loads

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 10.22 s. Compare this filmstrip against another site.

  1. 1.20 s
  2. 2.56 s
  3. 3.83 s
  4. 5.11 s
  5. 6.39 s
  6. 7.67 s
  7. 8.94 s
  8. 10.22 s

Lighthouse Scores LAB Simulated

100
Performance
no change
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics LAB FIELD

Core Web Vitals: passing 3 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-10-01 → 2026-10-28), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 809 ms good — 809 ms – 809 ms 433 ms good 97% 2.2% 0.8%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 101 ms good 93.6% 5% 1.4%
CLS CWV Cumulative Layout Shift 0 good — 0 – 0 0 good 100% 0% 0%
TBT Total Blocking Time 0 ms good — 0 ms – 0 ms n/a —
FCP First Contentful Paint 809 ms good — 809 ms – 809 ms 432 ms good 95% 3.1% 1.9%
Speed Index 809 ms good — 809 ms – 809 ms n/a —
TTFB Time to First Byte 619 ms good — 619 ms – 619 ms 249 ms good 93.6% 4.8% 1.6%

LCP Subparts LAB Throttled

The subparts attribute LCP to your server, resource discovery, download, or rendering. They come from one throttled load, the same one as the filmstrip, so they add up to that load’s LCP rather than the simulated Lab LCP above.

time to first byte 1.13 s
element render delay 73 ms

LCP LAB Simulated vs LCP FIELD

Lab 809 ms
Field p75 433 ms

The lab LCP is 1.87× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 23.6 kB — 23.6 kB – 23.6 kB
Requests 9 — 9 – 9
Third-party Weight 0 B — 0 B – 0 B
Third-party CPU 0 ms — 0 ms – 0 ms
Unused JS 0 B — 0 B – 0 B
Unused CSS 0 B — 0 B – 0 B

By resource type

Type Transfer Share Size Requests
other 40.4% 9.6 kB 3
document 32.8% 7.8 kB 1
stylesheet 11.5% 2.7 kB 1
script 10.7% 2.5 kB 3
image 4.6% 1.1 kB 1
Total 23.6 kB 9

Without JavaScript

The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.

Scripts disabled
As rendered

1.9% of pixels differ — they are nearly identical. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Page health

Metric Value Change / range Trend
Main Thread Work 202 ms — 202 ms – 202 ms
Long Tasks 0 — 0 – 0
DOM Elements 221 — 221 – 221
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 — 0 – 0
A11y Failures 0 — 0 – 0
A11y Failing Nodes 0 — 0 – 0

Main thread work

Task Time Share Duration Simulated
other 47% 96 ms
style layout 28% 57 ms
script evaluation 15% 29 ms
parse HTML 4% 8 ms
paint composite render 3% 7 ms
script parse compile 3% 5 ms
Total 202 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 441 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Field history 25 weeks

Weekly p75 from the CrUX History API, backfilled in a single request.

Week ending LCPINPCLSFCPTTFB
2026-10-24 423 ms 100 ms 0 425 ms 237 ms
2026-10-17 401 ms 101 ms 0 402 ms 200 ms
2026-10-10 413 ms 102 ms 0 415 ms 216 ms
2026-10-03 423 ms 104 ms 0 425 ms 224 ms
2026-09-26 424 ms 105 ms 0 425 ms 226 ms
2026-09-19 436 ms 104 ms 0 437 ms 235 ms
2026-09-12 448 ms 104 ms 0 448 ms 237 ms
2026-09-05 449 ms 105 ms 0 450 ms 238 ms
2026-08-29 445 ms 105 ms 0 445 ms 246 ms
2026-08-22 468 ms 109 ms 0 471 ms 257 ms
2026-08-15 459 ms 111 ms 0 459 ms 254 ms
2026-08-08 454 ms 109 ms 0 452 ms 252 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 30, 2026, 10:08 PM UTC 100 809 ms 0 0 ms 23.6 kB 3/3 ±0 2,110 +2% 34.9s Wayback