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

usefathom.com

https://usefathom.com/

98PERF 100A11Y 100BEST 100SEO !AXE ✓CWV

Ranks Overall #625 Astro Showcase #36

Data from Oct 2, 2026, 7:02 PM UTC old Measured once a month · 1 run since Oct 2, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · 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

Astro Built with Astro
Uses Font AwesomeFont Awesome
Vercel Hosted by Vercel

Lighthouse Scores LAB Simulated

98
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 (2026-09-02 → 2026-09-29), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 2.27 s good — 2.27 s – 2.27 s 985 ms good 95.7% 2.4% 1.9%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 109 ms good 93.6% 5.7% 0.8%
CLS CWV Cumulative Layout Shift 0.002 good — 0.002 – 0.002 0 good 100% 0% 0%
TBT Total Blocking Time 0 ms good — 0 ms – 0 ms n/a —
FCP First Contentful Paint 1.52 s good — 1.52 s – 1.52 s 985 ms good 92.9% 3.9% 3.2%
Speed Index 1.52 s good — 1.52 s – 1.52 s n/a —
TTFB Time to First Byte 620 ms good — 620 ms – 620 ms 400 ms good 93.7% 5% 1.3%

LCP Subparts LAB Unthrottled

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

element render delay 156 ms
time to first byte 4 ms

LCP LAB Simulated vs LCP FIELD

Lab 2.27 s
Field p75 985 ms

The lab LCP is 2.3× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 246 kB — 246 kB – 246 kB
Requests 21 — 21 – 21
Third-party Weight 0 B — 0 B – 0 B
Third-party CPU 0 ms — 0 ms – 0 ms
Unused JS 0 B — 0 B – 0 B
Unused CSS 20.4 kB — 20.4 kB – 20.4 kB

By resource type

Type Transfer Share Size Requests
font 39.4% 97.0 kB 3
image 34.6% 85.2 kB 11
document 12.1% 29.9 kB 1
stylesheet 11.5% 28.4 kB 2
script 1.9% 4.8 kB 2
other 0.4% 1.1 kB 1
Total 246 kB 21

Page health

Metric Value Change / range Trend
Main Thread Work 808 ms — 808 ms – 808 ms
Long Tasks 2 — 2 – 2
DOM Elements 838 — 838 – 838
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 1 — 1 – 1
A11y Failures 0 — 0 – 0
A11y Failing Nodes 0 — 0 – 0

Main thread work

Task Time Share Duration Simulated
style layout 47% 379 ms
other 36% 288 ms
paint composite render 6% 50 ms
parse HTML 6% 45 ms
script evaluation 4% 36 ms
script parse compile 1% 6 ms
garbage collection 1% 5 ms
Total 808 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 1168 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
2026-09-26 979 ms 119 ms 0 977 ms 418 ms
2026-09-19 1.01 s 123 ms 0 1.02 s 447 ms
2026-09-12 1.06 s 139 ms 0 1.06 s 462 ms
2026-09-05 1.09 s 139 ms 0 1.10 s 471 ms
2026-08-29 1.10 s 139 ms 0 1.11 s 485 ms
2026-08-22 1.20 s 139 ms 0 1.21 s 485 ms
2026-08-15 1.34 s 139 ms 0 1.35 s 475 ms
2026-08-08 1.44 s 139 ms 0 1.44 s 487 ms
2026-08-01 1.49 s 133 ms 0 1.50 s 496 ms
2026-07-25 1.27 s 123 ms 0 1.27 s 499 ms
2026-07-18 1.07 s 94 ms 0 1.07 s 479 ms
2026-07-11 1.04 s 77 ms 0 1.04 s 473 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 2, 2026, 7:02 PM UTC 98 2.27 s 0.002 0 ms 246 kB 3/3 ±1 2,483 0% 26.5s Wayback