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

esif.dev

https://esif.dev/

98 100 100 92 ✓AXE –CWV

Ranks Overall #398 Built Awesome #322 zachleat #13

Data from Sep 4, 2026, 11:55 PM UTC old Measured once a week · 3 runs since Aug 20, 2026

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

Stack

Eleventy 2.0.1 Built with Eleventy 2.0.1
Cloudflare Hosted by Cloudflare

Lighthouse Scores

98
Performance
no change
100
Accessibility
no change
100
Best Practices
no change
92
SEO
no change

Without JavaScript

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

Scripts disabled
As rendered

9.6% of pixels differ — they are nearly identical. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.97 s 2.10 s ↓ -135 ms (-6.4%) 1.97 s 2.10 s
CLS Cumulative Layout Shift 0.019 0.010 ↑ +0.009 (+90%) 0.010 0.019
TBT Total Blocking Time 0 ms 0 ms → no change 0 ms 0 ms
FCP First Contentful Paint 1.68 s 1.80 s ↓ -126 ms (-7%) 1.68 s 1.80 s
Speed Index 1.68 s 1.80 s ↓ -126 ms (-7%) 1.68 s 1.80 s
TTFB Time to First Byte 620 ms 478 ms ↑ +142 ms (+29.7%) 478 ms 623 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 86 ms
time to first byte 29 ms
resource load duration 18 ms
resource load delay 11 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 450 kB 449 kB ↑ +542 B (+0.1%) 449 kB 451 kB
Requests 31 31 → no change 31 31
Third-party Weight 55.5 kB 54.8 kB ↑ +702 B (+1.3%) 54.8 kB 56.7 kB
Third-party CPU 4 ms 6 ms ↓ -1 ms (-24.6%) 4 ms 6 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

  • image 87.2% 392 kB · 21 req
  • script 4.4% 19.8 kB · 4 req
  • font 3.4% 15.4 kB · 2 req
  • document 2.3% 10.4 kB · 1 req
  • other 2.2% 10.0 kB · 2 req
  • stylesheet 0.5% 2.2 kB · 1 req

Third parties 3 entities

55.5 kB transferred, 4 ms on the main thread.

11ty.dev image 29.9 kB · 0 ms CPU
Google Fonts font 15.4 kB · 0 ms CPU
Cloudflare script 10.2 kB · 4 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 452 ms 574 ms ↓ -122 ms (-21.2%) 452 ms 574 ms
Long Tasks 0 0 → no change 0 0
DOM Elements 868 868 → no change 868 868
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 192 ms
script evaluation 123 ms
style layout 92 ms
paint composite render 24 ms
parse HTML 20 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 1458 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

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 4, 2026, 11:55 PM UTC 98 1.97 s 0.019 0 ms 450 kB 3/3 ±0 2,495 +1% 30.2s Wayback
Aug 28, 2026, 11:34 PM UTC 98 2.10 s 0.010 0 ms 449 kB 3/3 ±2 2,300 -7% 32.1s Wayback
Aug 20, 2026, 9:40 PM UTC 98 2.05 s 0.017 0 ms 451 kB 3/3 ±1 2,503 +1% 29.6s Wayback

Embed this score

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