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.

Charts Compare Measurement runs Embed a score Open to Work

11ty.dev

https://www.11ty.dev/

100PERF 100A11Y 100BEST 100SEO ✓AXE ✓CWV

Ranks Overall #87 Built Awesome #76 Developer Tooling #1 Site Generators #1 zachleat #2

Data from Oct 6, 2026, 12:58 PM UTC old Measured every 2 days · 26 runs since Aug 21, 2026

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

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 4,187, 68% faster than this project's median of 2,486. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

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
Uses Lit 3.3.0Lit 3.3.0Web AwesomeWeb AwesomeFont AwesomeFont Awesome
Vercel Hosted by Vercel

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

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

Metrics LAB FIELD

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

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-07 → 2026-10-04), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 1.22 s good ↓ -2 ms (-0.2%) 1.21 s – 1.33 s 1.03 s good 94.6% 3.7% 1.8%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 95 ms good 92% 6.9% 1.1%
CLS CWV Cumulative Layout Shift 0 good → no change 0 – 0 0 good 94.6% 1.9% 3.6%
TBT Total Blocking Time 6 ms good ↑ +4 ms (+200%) 0 ms – 64 ms n/a —
FCP First Contentful Paint 1.07 s good ↓ -2 ms (-0.2%) 1.06 s – 1.33 s 1.03 s good 89.7% 6.6% 3.8%
Speed Index 1.07 s good ↓ -2 ms (-0.2%) 1.06 s – 1.33 s n/a —
TTFB Time to First Byte 623 ms good ↓ -2 ms (-0.3%) 607 ms – 649 ms 523 ms good 88% 9% 3%

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 582 ms
element render delay 272 ms

LCP LAB Simulated vs LCP FIELD

Lab 1.22 s
Field p75 1.03 s

The lab LCP is 1.19× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 101 kB ↑ +18 B 92.0 kB – 175 kB
Requests 13 → no change 11 – 54
Third-party Weight 0 B → no change 0 B – 0 B
Third-party CPU 0 ms → no change 0 ms – 0 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
document 39% 39.4 kB 1
font 21.7% 21.9 kB 2
script 16.4% 16.5 kB 3
image 11.9% 12.0 kB 3
stylesheet 9.3% 9.4 kB 1
other 1.7% 1.7 kB 1
Total 101 kB 13

Without JavaScript

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

Scripts disabled
As rendered

0.6% 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 463 ms ↑ +63 ms (+15.8%) 400 ms – 935 ms
Long Tasks 2 ↑ +1 (+100%) 1 – 3
DOM Elements 1,468 → no change 1,468 – 1,541
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 → no change 0 – 0
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
style layout 42% 196 ms
other 30% 137 ms
script evaluation 12% 56 ms
paint composite render 8% 38 ms
parse HTML 6% 30 ms
garbage collection 1% 6 ms
script parse compile 0% 2 ms
Total 463 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 2301 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 h2

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-09-26 1.13 s 100 ms 0 1.10 s 551 ms
2026-09-19 1.10 s 87 ms 0 1.06 s 530 ms
2026-09-12 1.09 s 87 ms 0 1.04 s 522 ms
2026-09-05 1.06 s 87 ms 0 1.04 s 548 ms
2026-08-29 1.02 s 87 ms 0 1.03 s 528 ms
2026-08-22 984 ms 93 ms 0 986 ms 514 ms
2026-08-15 1.07 s 88 ms 0 1.07 s 560 ms
2026-08-08 1.10 s 88 ms 0 1.10 s 527 ms
2026-08-01 1.18 s 89 ms 0 1.16 s 593 ms
2026-07-25 1.21 s 93 ms 0 1.19 s 607 ms
2026-07-18 1.19 s 96 ms 0 1.19 s 607 ms
2026-07-11 1.18 s 97 ms 0 1.17 s 604 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 6, 2026, 12:58 PM UTC 100 1.22 s 0 6 ms 101 kB 3/3 ±0 4,187 +68% 49.6s Wayback
Oct 3, 2026, 1:08 PM UTC 100 1.23 s 0 2 ms 101 kB 3/3 ±16 4,507 +81% 49.5s Wayback
Sep 30, 2026, 3:41 PM UTC 100 1.24 s 0 11 ms 92.0 kB 3/3 ±0 2,478 0% 57.2s Wayback
Sep 28, 2026, 10:44 AM UTC 100 1.23 s 0 6 ms 101 kB 3/3 ±0 2,482 0% 57.9s Wayback
Sep 24, 2026, 10:03 PM UTC 100 1.22 s 0 16 ms 92.0 kB 3/3 ±0 2,480 0% 57.3s Wayback
Sep 22, 2026, 9:47 PM UTC 100 1.22 s 0 6 ms 101 kB 3/3 ±0 3,415 +37% 48.1s Wayback
Sep 20, 2026, 8:47 PM UTC 100 1.23 s 0 18 ms 101 kB 3/3 ±0 2,235 -10% 57.4s Wayback
Sep 18, 2026, 1:24 PM UTC 100 1.33 s 0 0 ms 92.0 kB 3/3 ±1 2,440 -2% 59.8s Wayback
Sep 16, 2026, 3:37 AM UTC 100 1.29 s 0 18 ms 101 kB 3/3 ±0 2,394 -4% 54s Wayback
Sep 14, 2026, 12:59 AM UTC 100 1.23 s 0 10 ms 101 kB 3/3 ±0 2,995 +20% 51.9s Wayback
Sep 11, 2026, 8:41 PM UTC 100 1.24 s 0 19 ms 101 kB 3/3 ±0 2,636 +6% 59.3s Wayback
Sep 9, 2026, 5:37 PM UTC 100 1.22 s 0 21 ms 101 kB 3/3 ±0 2,499 +1% 37.6s Wayback
Sep 7, 2026, 3:02 PM UTC 100 1.24 s 0 16 ms 92.1 kB 3/3 ±1 2,478 0% 34.1s Wayback
Sep 5, 2026, 3:09 AM UTC 100 1.21 s 0 4 ms 92.1 kB 3/3 ±1 2,445 -2% 34s Wayback
Sep 3, 2026, 10:24 PM UTC 100 1.23 s 0 28 ms 92.2 kB 3/3 ±0 2,958 +19% 28.6s Wayback
Sep 2, 2026, 8:49 PM UTC 100 1.24 s 0 20 ms 92.1 kB 3/3 ±0 2,445 -2% 32.2s Wayback
Sep 1, 2026, 8:39 PM UTC 100 1.25 s 0 14 ms 92.1 kB 3/3 ±0 2,301 -7% 32.7s Wayback
Aug 31, 2026, 5:57 PM UTC 100 1.22 s 0 64 ms 92.3 kB 3/3 ±0 2,443 -2% 32.2s Wayback
Aug 27, 2026, 4:15 AM UTC 100 1.23 s 0 19 ms 101 kB 3/3 ±12 2,625 +6% 37.6s Wayback
Aug 25, 2026, 11:24 PM UTC 100 1.24 s 0 7 ms 92.4 kB 3/3 ±18 2,496 0% 35.2s Wayback
Aug 25, 2026, 9:20 PM UTC 100 1.22 s 0 20 ms 101 kB 3/3 ±0 2,313 -7% 32.5s Wayback
Aug 25, 2026, 7:33 PM UTC 100 1.33 s 0 0 ms 92.3 kB 3/3 ±17 2,338 -6% 33.1s Wayback
Aug 24, 2026, 7:28 PM UTC 100 1.23 s 0 21 ms 101 kB 3/3 ±18 2,463 -1% 36.9s Wayback
Aug 23, 2026, 7:21 PM UTC 100 1.29 s 0 8 ms 167 kB 3/3 ±5 3,010 +21% 34.8s Wayback
Aug 22, 2026, 6:28 PM UTC 100 1.25 s 0 36 ms 175 kB 3/3 ±10 2,370 -5% 40.5s Wayback
Aug 21, 2026, 5:28 PM UTC 100 1.21 s 0 9 ms 92.2 kB 3/3 ±1 2,471 -1% 35.5s Wayback

Embed this score

Use this web component to show 11ty.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.11ty.dev/"></speedlify2-score>