speedlify2

Lighthouse lab metrics and Chrome UX Report field data for a list of sites, recorded on every run and compared over time.

Measurement runs · Embed a score · Field data from the Chrome UX Report ·

eu-testbook.com

https://eu-testbook.com/

72 89 100 92 –CWV 21AXE

Data from Aug 20, 2026, 9:32 PM UTC — 21h old.

Built Awesome · 1 measurement · since Aug 20, 2026 · last attempt 21h

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.

Netlify Hosted by Netlify

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-19 → 2026-08-15). From the backfilled CrUX history rather than this measurement, which predates the API key. This is what Google measures you on.

LCP — no data
INP — no data
CLS — no data

Scores

72
Performance
no change
89
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 2.21 s — — 2.21 s 2.21 s
CLS Cumulative Layout Shift 0.937 — — 0.937 0.937
TBT Total Blocking Time 0 ms — — 0 ms 0 ms
FCP First Contentful Paint 2.06 s — — 2.06 s 2.06 s
Speed Index 2.06 s — — 2.06 s 2.06 s
TTFB Time to First Byte 654 ms — — 654 ms 654 ms

What LCP is made of

A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.

element render delay 170 ms
time to first byte 53 ms

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-08-15 — — — — —
2026-08-08 — — — — —
2026-08-01 — — — — —
2026-07-25 — — — — —
2026-07-18 — — — — —
2026-07-11 — — — — —
2026-07-04 — — — — —
2026-06-27 — — — — —
2026-06-20 — — — — —
2026-06-13 — — — — —
2026-06-06 1.82 s — 0 1.79 s —
2026-05-30 1.81 s — 0 1.81 s 1.11 s

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 609.1 kB — — 609.1 kB 609.1 kB
Requests 40 — — 40 40
Third-party Weight 101.4 kB — — 101.4 kB 101.4 kB
Third-party CPU 17 ms — — 17 ms 17 ms
Unused JS 0 B — — 0 B 0 B
Unused CSS 0 B — — 0 B 0 B

By resource type

image 495.6 kB · 18 req
script 57.7 kB · 10 req
font 39.3 kB · 5 req
stylesheet 11.2 kB · 5 req
document 4.1 kB · 1 req
other 1.3 kB · 1 req
third party 101.4 kB · 14 req

Third parties 4 entities

101.4 kB transferred, 17 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Cloudflare CDN 42.8 kB · 14 ms CPU
Google Fonts 40.4 kB · 0 ms CPU
parsleyjs.org 12.3 kB · 2 ms CPU
Unpkg 5.9 kB · 0 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 426 ms — — 426 ms 426 ms
Long Tasks 0 — — 0 0
DOM Elements 195 — — 195 195
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 21 — — 21 21
A11y Failures 3 — — 3 3
A11y Failing Nodes 12 — — 12 12

Main thread work

other 202 ms
style layout 102 ms
script evaluation 64 ms
paint composite render 28 ms
parse HTML 15 ms
script parse compile 15 ms

Axe violations axe-core 4.13.0, full rule set

21 violating nodes across 7 rules, 301 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.

  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 8 nodes
  • moderate region — All page content should be contained by landmarks 5 nodes
  • serious aria-hidden-focus — ARIA hidden element must not be focusable or contain focusable elements 4 nodes
  • moderate heading-order — Heading levels should only increase by one 1 node
  • moderate landmark-one-main — Document should have one main landmark 1 node
  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
  • moderate page-has-heading-one — Page should contain a level-one heading 1 node

Accessibility failures 3 of 21 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. 7 nodes
  • aria-hidden-focus — `[aria-hidden="true"]` elements contain focusable descendents 4 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.

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

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 PerfLCPCLSTBTWeight RunsSpreadBenchTook
Aug 20, 2026, 9:32 PM UTC 72 2.21 s 0.937 0 ms 609.1 kB 3/3 ±5 3,211 24.1s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show eu-testbook.com's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify-score.js component code into your site! 

<speedlify-score speedlify-url="https://zachleat.github.io/speedlify2/" url="https://eu-testbook.com/"></speedlify-score>