speedlify2

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

Charts Measurement runs Embed a score

brett.im

https://brett.im/

100 100 100 100 ✓AXE –CWV

Ranks Overall #189 Built Awesome #154

Data from Sep 4, 2026, 5:39 AM UTC old Measured once a week · 3 runs since Aug 20, 2026

Test elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis

Stack

xm Hosted by xmit

Lighthouse Scores

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

Filmstrip Lighthouse, mobile

How the page drew during the measured load, at 8 points across 3.00 s.

  1. 375 ms
  2. 750 ms
  3. 1.13 s
  4. 1.50 s
  5. 1.88 s
  6. 2.25 s
  7. 2.63 s
  8. 3.00 s

Without JavaScript

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

Scripts disabled
As rendered

0.5% of pixels differ — they are nearly identical. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.53 s 1.10 s ↑ +429 ms (+39.1%) 1.10 s 1.53 s
CLS Cumulative Layout Shift 0 0 → no change 0 0
TBT Total Blocking Time 0 ms 0 ms → no change 0 ms 0 ms
FCP First Contentful Paint 1.23 s 1.10 s ↑ +129 ms (+11.8%) 1.10 s 1.23 s
Speed Index 2.37 s 1.10 s ↑ +1268 ms (+115.6%) 1.10 s 2.37 s
TTFB Time to First Byte 613 ms 548 ms ↑ +65 ms (+11.9%) 548 ms 616 ms

LCP Subparts lab observed, unthrottled

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

element render delay 1.17 s
time to first byte 164 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 6.8 kB 6.8 kB → no change 6.8 kB 6.8 kB
Requests 3 3 → no change 3 3
Third-party Weight 0 B 0 B → no change 0 B 0 B
Third-party CPU 0 ms 0 ms → no change 0 ms 0 ms
Unused JS 0 B 0 B → no change 0 B 0 B
Unused CSS 0 B 0 B → no change 0 B 0 B

By resource type

  • stylesheet 59.7% 2.8 kB · 1 req
  • document 40.3% 1.9 kB · 1 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 132 ms 129 ms ↑ +3 ms (+2.2%) 129 ms 136 ms
Long Tasks 0 0 → no change 0 0
DOM Elements 52 52 → no change 52 52
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 0 → no change 0 0
A11y Failures 0 0 → no change 0 0
A11y Failing Nodes 0 0 → no change 0 0

Main thread work

other 64 ms
style layout 50 ms
script evaluation 9 ms
paint composite render 5 ms
parse HTML 4 ms
script parse compile 0 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 162 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 h3

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook
Sep 4, 2026, 5:39 AM UTC 100 1.53 s 0 0 ms 6.8 kB 3/3 ±0 2,465 -1% 24.8s
Aug 28, 2026, 1:22 AM UTC 100 1.10 s 0 0 ms 6.8 kB 3/3 ±0 2,366 -5% 20.9s
Aug 20, 2026, 7:11 PM UTC 100 1.53 s 0 0 ms 6.8 kB 3/3 ±0 2,492 0% 24.4s

Embed this score

Use this web component to show brett.im's scores on any website, updated whenever this instance re-measures. Don’t forget to bundle the speedlify2-score.js component code into your site! 

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://brett.im/"></speedlify2-score>