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

Charts Compare Measurement runs Embed a score

surma.dev

https://surma.dev/

97 83 100 85 !AXE !CWV

Ranks Overall #1,000 Built Awesome #776

Data from Sep 6, 2026, 2:02 PM UTC old Measured once a week · 3 runs since Aug 21, 2026

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

Stack

Netlify Hosted by Netlify

Lighthouse Scores

97
Performance
no change
83
Accessibility
no change
100
Best Practices
no change
85
SEO
no change

Metrics Lighthouse, mobile Chrome UX Report

Core Web Vitals: failing 2 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-08-08 → 2026-09-04), origin-level.

Metric Lab Lighthouse Field Chrome UX Report
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 2.41 s good ↓ -3 ms (-0.1%) 2.41 s – 2.42 s 2.71 s needs work 73.7% 16.7% 9.7%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — — —
CLS CWV Cumulative Layout Shift 0.008 good → no change 0 – 0.008 0 good 97.3% 2.7% 0%
TBT Total Blocking Time 0 ms good ↓ -16 ms (-100%) 0 ms – 16 ms n/a —
FCP First Contentful Paint 1.57 s good ↓ -32 ms (-2%) 1.57 s – 2.11 s 2.08 s needs work 71.9% 16.4% 11.7%
Speed Index 1.69 s good ↓ -457 ms (-21.3%) significant 1.69 s – 2.14 s n/a —
TTFB Time to First Byte 609 ms good ↓ -3 ms (-0.5%) 609 ms – 613 ms 1.51 s needs work 42.5% 37.5% 20%

LCP Subparts lab observed, unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is throttled.

element render delay 171 ms
time to first byte 77 ms

Lab LCP vs Field LCP Chrome UX Report

Lab 2.41 s
Field p75 2.71 s

The lab LCP is 0.89× the field p75 — real users likely have below-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 191 kB ↑ +1.1 kB (+0.6%) 189 kB – 191 kB
Requests 24 → no change 24 – 24
Third-party Weight 10.4 kB ↓ -101 B (-1%) 10.4 kB – 12.4 kB
Third-party CPU 5 ms ↑ +0 ms (+4.3%) 3 ms – 5 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

  • font 76.4% 146 kB · 2 req
  • image 8.7% 16.6 kB · 9 req
  • script 8.3% 15.8 kB · 5 req
  • stylesheet 3.7% 7.1 kB · 1 req
  • document 2.5% 4.8 kB · 1 req
  • other 0.3% 656 B · 5 req

Third parties 2 entities

10.4 kB transferred, 5 ms on the main thread.

Cloudflare script 10.2 kB · 5 ms CPU
Google Analytics 219 B · 0 ms CPU

Page health

Metric Value Change / range Trend
Main Thread Work 672 ms ↓ -120 ms (-15.2%) 533 ms – 792 ms
Long Tasks 2 ↑ +1 (+100%) 0 – 2
DOM Elements 121 → no change 121 – 121
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 2 → no change 2 – 2
A11y Failures 2 → no change 2 – 2
A11y Failing Nodes 2 → no change 2 – 2

Main thread work

other 305 ms
style layout 253 ms
script evaluation 79 ms
paint composite render 16 ms
parse HTML 16 ms
script parse compile 3 ms

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 214 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • serious html-has-lang — <html> element must have a lang attribute 1 node
  • critical image-alt — Images must have alternative text 1 node

Accessibility failures 2 of 14 audits

  • html-has-lang — `<html>` element does not have a `[lang]` attribute 1 node
  • image-alt — Image elements do not have `[alt]` attributes 1 node

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
2026-09-05 2.44 s — 0 1.99 s 1.49 s
2026-08-29 2.67 s — 0.010 2.08 s 1.51 s
2026-08-22 2.60 s — 0.010 2.09 s 1.34 s
2026-08-15 2.33 s — 0 1.94 s 1.24 s
2026-08-08 2.26 s — 0 1.94 s 1.23 s
2026-08-01 2.18 s — 0 1.72 s 1.22 s
2026-07-25 2.20 s — 0 1.75 s 1.23 s
2026-07-18 2.25 s — 0 1.76 s 1.25 s
2026-07-11 1.95 s — 0 1.70 s 1.15 s
2026-07-04 2.40 s — 0 1.78 s 1.15 s
2026-06-27 2.29 s — 0 1.76 s 978 ms
2026-06-20 2.26 s — 0 1.73 s 978 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 6, 2026, 2:02 PM UTC 97 2.41 s 0.008 0 ms 191 kB 3/3 ±2 2,494 +1% 22.5s Wayback
Aug 30, 2026, 1:39 PM UTC 97 2.41 s 0.008 16 ms 190 kB 3/3 ±1 2,471 0% 22.6s Wayback
Aug 21, 2026, 7:45 AM UTC 96 2.42 s 0 0 ms 189 kB 3/3 ±1 3,009 +21% 20.2s Wayback

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