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.

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speedlify.dev

https://www.speedlify.dev/

94 100 100 100 ✓AXE –CWV

Ranks Overall #356 Built Awesome #286 Developer Tooling #5 zachleat #13

Data from Sep 14, 2026, 6:16 AM UTC old Measured every 2 days · 13 runs since Aug 21, 2026

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

Build Awesome 4.0.0 Built with Build Awesome 4.0.0
GitHub Pages Hosted by GitHub Pages

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 3.00 s. Compare this filmstrip against another site.

  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

Lighthouse Scores LAB Simulated

94
Performance
↑ +2 (+2.2%)
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics LAB

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 Simulated
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 2.31 s good ↓ -33 ms (-1.4%) 793 ms – 2.35 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 210 ms needs work ↓ -69 ms (-24.7%) 0 ms – 281 ms
FCP First Contentful Paint 1.61 s good ↓ -11 ms (-0.7%) 793 ms – 1.63 s
Speed Index 1.61 s good ↓ -11 ms (-0.7%) 793 ms – 1.63 s
TTFB Time to First Byte 604 ms good ↓ -15 ms (-2.4%) 602 ms – 676 ms

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 588 ms
element render delay 276 ms

Page weight

Metric Value Change / range Trend
Page Weight 284 kB ↓ -23.0 kB (-7.7%) 50.4 kB – 318 kB
Requests 41 ↓ -1 (-2.4%) 4 – 42
Third-party Weight 102 kB ↓ -18.5 kB (-15.6%) significant 0 B – 121 kB
Third-party CPU 2 ms ↓ -1 ms (-19.2%) significant 0 ms – 3 ms
Unused JS 0 B → no change 0 B – 21.3 kB
Unused CSS 11.6 kB ↓ -81 B (-0.7%) 0 B – 12.2 kB

By resource type

Type Transfer Share Size Requests
document 50.4% 143 kB 1
image 47.9% 136 kB 37
script 1.6% 4.4 kB 1
other 0.1% 382 B 1
Total 284 kB 41

Third parties 3 entities

Entity Transfer Size Main thread Simulated
11ty.dev image 97.6 kB 0 ms
zgo.at 4.4 kB 2 ms
goatcounter.com 382 B 0 ms
Total 102 kB 2 ms

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.

Page health

Metric Value Change / range Trend
Main Thread Work 1.37 s ↓ -365 ms (-21%) 121 ms – 1.81 s
Long Tasks 6 ↓ -2 (-25%) 0 – 9
DOM Elements 13,665 ↑ +61 (+0.4%) 64 – 13,665
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 → no change 0 – 0
A11y Failures 1 → no change 0 – 1
A11y Failing Nodes 2 → no change 0 – 10

Main thread work

Task Time Share Duration Simulated
style layout 33% 453 ms
other 29% 397 ms
paint composite render 23% 314 ms
parse HTML 12% 158 ms
script evaluation 3% 38 ms
garbage collection 1% 7 ms
script parse compile 0% 3 ms
Total 1.37 s

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 35307 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Accessibility failures 1 of 31 audits

  • label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 2 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 14, 2026, 6:16 AM UTC 94 2.31 s 0 210 ms 284 kB 3/3 ±2 3,044 +23% 79.4s Wayback
Sep 11, 2026, 11:28 PM UTC 92 2.35 s 0 279 ms 308 kB 3/3 ±4 2,331 -6% 93.1s Wayback
Sep 9, 2026, 8:55 PM UTC 99 1.59 s 0 57 ms 318 kB 3/3 ±11 3,373 +36% 53.6s Wayback
Sep 7, 2026, 7:35 PM UTC 95 1.54 s 0 243 ms 312 kB 3/3 ±2 2,481 0% 67.5s Wayback
Sep 5, 2026, 12:29 PM UTC 98 1.52 s 0 161 ms 290 kB 3/3 ±1 3,057 +23% 50.1s Wayback
Sep 4, 2026, 1:02 AM UTC 97 1.51 s 0 179 ms 259 kB 3/3 ±0 2,320 -7% 58.5s Wayback
Sep 2, 2026, 11:14 PM UTC 94 1.52 s 0 281 ms 259 kB 3/3 ±1 2,266 -9% 60.8s Wayback
Sep 1, 2026, 10:44 PM UTC 95 1.53 s 0 254 ms 286 kB 3/3 ±2 2,390 -4% 61.7s Wayback
Aug 31, 2026, 9:01 PM UTC 97 1.52 s 0 168 ms 258 kB 3/3 ±1 2,423 -2% 56.2s Wayback
→ Generator changed from Eleventy to Build Awesome first seen this measurement
Aug 27, 2026, 2:29 PM UTC 97 1.35 s 0 195 ms 189 kB 3/3 ±10 2,370 -5% 59.7s Wayback
Aug 23, 2026, 7:21 PM UTC 97 1.28 s 0 189 ms 181 kB 3/3 ±7 2,386 -4% 58.5s Wayback
Aug 23, 2026, 5:19 PM UTC 99 1.28 s 0 120 ms 183 kB 3/3 ±7 2,486 0% 56.3s Wayback
Aug 21, 2026, 1:55 PM UTC 100 793 ms 0 0 ms 50.4 kB 3/3 ±0 2,502 +1% 21.8s Wayback

Embed this score

Use this web component to show speedlify.dev'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://www.speedlify.dev/"></speedlify2-score>