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

ffconf.org

https://ffconf.org/

97 91 100 100 ✗AXE –CWV

Ranks Overall #1,104 Built Awesome #848

Data from Sep 5, 2026, 8:13 AM UTC old Measured once a week · 3 runs since Aug 20, 2026

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

Stack

Netlify Hosted by Netlify

Lighthouse Scores

97
Performance
↓ -2 (-2%)
91
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics Lighthouse, mobile

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric Lab Lighthouse
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 2.03 s good ↑ +341 ms (+20.2%) significant 1.69 s – 2.03 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0 good → no change 0 – 0
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 1.66 s good ↓ -26 ms (-1.5%) 1.66 s – 1.69 s
Speed Index 3.95 s needs work ↑ +2263 ms (+133.9%) significant 1.69 s – 3.95 s
TTFB Time to First Byte 681 ms good ↑ +36 ms (+5.6%) significant 645 ms – 681 ms

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 2.27 s
time to first byte 77 ms

Page weight

Metric Value Change / range Trend
Page Weight 134 kB ↑ +185 B (+0.1%) 133 kB – 134 kB
Requests 24 → no change 24 – 24
Third-party Weight 2.7 kB ↓ -1 B 2.7 kB – 2.7 kB
Third-party CPU 2 ms → no change 2 ms – 2 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

  • image 67% 89.5 kB · 13 req
  • font 19.1% 25.5 kB · 2 req
  • stylesheet 6.2% 8.3 kB · 4 req
  • document 5.3% 7.0 kB · 2 req
  • script 1.6% 2.2 kB · 1 req
  • other 0.8% 1.1 kB · 2 req

Third parties 1 entities

2.7 kB transferred, 2 ms on the main thread.

Plausible scriptother 2.7 kB · 2 ms CPU

Page health

Metric Value Change / range Trend
Main Thread Work 501 ms ↑ +49 ms (+10.9%) 452 ms – 518 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 113 → no change 113 – 113
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 7 → no change 5 – 7
A11y Failures 2 → no change 2 – 2
A11y Failing Nodes 11 → no change 11 – 11

Main thread work

other 316 ms
paint composite render 85 ms
style layout 60 ms
script evaluation 24 ms
parse HTML 12 ms
script parse compile 3 ms

Axe violations axe-core 4.13.0, full rule set

7 violating nodes across 2 rules, 243 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate region — All page content should be contained by landmarks 4 nodes
  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 3 nodes

Accessibility failures 2 of 22 audits

  • target-size — Touch targets do not have sufficient size or spacing. 8 nodes
  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 3 nodes

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 5, 2026, 8:13 AM UTC 97 2.03 s 0 0 ms 134 kB 3/3 ±4 2,340 -6% 26.5s Wayback
Aug 29, 2026, 5:54 AM UTC 99 1.69 s 0 0 ms 133 kB 3/3 ±3 2,976 +20% 22.2s Wayback
Aug 20, 2026, 9:34 PM UTC 99 1.69 s 0 0 ms 133 kB 3/3 ±5 3,363 +36% 26.1s Wayback

Embed this score

Use this web component to show ffconf.org'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://ffconf.org/"></speedlify2-score>