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

esbuild.github.io

https://esbuild.github.io/

100PERF 95A11Y 100BEST 70SEO !AXE ✓CWV

Ranks Overall #1,012 Developer Tooling #25

Data from Oct 8, 2026, 11:22 PM UTC old, older than this category's 3 days freshness target Measured every 2 days · 21 runs since Aug 27, 2026

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

This data is old.

Sites are measured on a rolling schedule, so figures here are the newest successful measurement rather than a reading taken just now. Comparisons against other sites may span different points in time.

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

GitHub Pages Hosted by GitHub Pages

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 7.80 s. Compare this filmstrip against another site.

  1. 622 ms
  2. 1.95 s
  3. 2.92 s
  4. 3.90 s
  5. 4.87 s
  6. 5.85 s
  7. 6.82 s
  8. 7.80 s

Lighthouse Scores LAB Simulated

100
Performance
no change
95
Accessibility
no change
100
Best Practices
no change
70
SEO
no change

Metrics LAB FIELD

Core Web Vitals: passing 2 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-09 → 2026-10-06), origin-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 810 ms good ↑ +14 ms (+1.8%) 791 ms – 810 ms 724 ms good 98.6% 0.5% 1%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — — —
CLS CWV Cumulative Layout Shift 0 good → no change 0 – 0 0 good 98.7% 0.4% 0.9%
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms n/a —
FCP First Contentful Paint 810 ms good ↑ +14 ms (+1.8%) 791 ms – 810 ms 696 ms good 98.4% 0.4% 1.2%
Speed Index 810 ms good ↑ +14 ms (+1.8%) 791 ms – 810 ms n/a —
TTFB Time to First Byte 617 ms good ↑ +7 ms (+1.1%) 601 ms – 619 ms 455 ms good 92.3% 7.1% 0.6%

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 567 ms
element render delay 100 ms

LCP LAB Simulated vs LCP FIELD

Lab 810 ms
Field p75 724 ms

The lab LCP is 1.12× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 7.8 kB ↑ +117 B (+1.5%) 7.6 kB – 7.8 kB
Requests 3 → no change 3 – 3
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 94.2% 7.4 kB 1
image 5.8% 450 B 1
Total 7.8 kB 3

Without JavaScript

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

Scripts disabled
As rendered

18.6% of pixels differ — parts of the page change. 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 395 ms ↑ +37 ms (+10.3%) 352 ms – 632 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 217 → no change 217 – 217
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 1 → no change 1 – 1
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 2 → no change 2 – 2

Main thread work

Task Time Share Duration Simulated
other 46% 181 ms
style layout 26% 103 ms
paint composite render 20% 79 ms
script evaluation 5% 21 ms
parse HTML 2% 9 ms
script parse compile 1% 2 ms
Total 395 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 471 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Accessibility failures 1 of 18 audits

  • target-size — Touch targets do not have sufficient size or spacing. 2 nodes

SEO failures 3 of 7 audits

  • meta-description — Document does not have a meta description
  • link-text — Links do not have descriptive text 1 item
  • crawlable-anchors — Links are not crawlable 2 items

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
2026-10-03 657 ms — 0 660 ms 456 ms
2026-09-26 616 ms — 0 612 ms 524 ms
2026-09-19 661 ms 99 ms 0 660 ms 511 ms
2026-09-12 699 ms 95 ms 0 669 ms 447 ms
2026-09-05 709 ms 93 ms 0 693 ms 537 ms
2026-08-29 786 ms 88 ms 0 769 ms 562 ms
2026-08-22 733 ms 80 ms 0 722 ms 551 ms
2026-08-15 801 ms 88 ms 0 784 ms 593 ms
2026-08-08 862 ms 97 ms 0 821 ms 605 ms
2026-08-01 862 ms 112 ms 0 846 ms 642 ms
2026-07-25 883 ms 114 ms 0 875 ms 638 ms
2026-07-18 783 ms 115 ms 0 777 ms 642 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 8, 2026, 11:22 PM UTC 100 810 ms 0 0 ms 7.8 kB 3/3 ±0 2,470 -1% 39.6s Wayback
Oct 6, 2026, 7:09 PM UTC 100 796 ms 0 0 ms 7.7 kB 3/3 ±0 3,266 +31% 38s Wayback
Oct 3, 2026, 8:43 PM UTC 100 799 ms 0 0 ms 7.7 kB 3/3 ±0 2,663 +7% 39.1s Wayback
Sep 30, 2026, 8:42 PM UTC 100 792 ms 0 0 ms 7.7 kB 3/3 ±0 2,493 0% 39.9s Wayback
Sep 28, 2026, 6:42 PM UTC 100 799 ms 0 0 ms 7.7 kB 3/3 ±0 2,292 -8% 39.1s Wayback
Sep 25, 2026, 5:52 AM UTC 100 797 ms 0 0 ms 7.7 kB 3/3 ±0 2,462 -1% 40.7s Wayback
Sep 23, 2026, 12:10 AM UTC 100 797 ms 0 0 ms 7.7 kB 3/3 ±0 2,470 -1% 40.2s Wayback
Sep 20, 2026, 11:20 PM UTC 100 797 ms 0 0 ms 7.7 kB 3/3 ±0 2,496 0% 40.3s Wayback
Sep 18, 2026, 5:33 PM UTC 100 799 ms 0 0 ms 7.7 kB 3/3 ±0 2,470 -1% 39.1s Wayback
Sep 16, 2026, 2:39 PM UTC 100 791 ms 0 0 ms 7.7 kB 3/3 ±0 2,978 +20% 37.2s Wayback
Sep 14, 2026, 12:06 PM UTC 100 808 ms 0 0 ms 7.7 kB 3/3 ±0 2,471 -1% 40.2s Wayback
Sep 12, 2026, 6:56 AM UTC 100 791 ms 0 0 ms 7.7 kB 3/3 ±0 2,489 0% 39.4s Wayback
Sep 10, 2026, 5:41 AM UTC 100 794 ms 0 0 ms 7.7 kB 3/3 ±0 2,390 -4% 26.1s Wayback
Sep 8, 2026, 12:58 AM UTC 100 801 ms 0 0 ms 7.7 kB 3/3 ±0 2,490 0% 21.5s Wayback
Sep 6, 2026, 12:40 AM UTC 100 793 ms 0 0 ms 7.7 kB 3/3 ±0 3,100 +25% 20.8s Wayback
Sep 4, 2026, 6:15 PM UTC 100 791 ms 0 0 ms 7.7 kB 3/3 ±0 2,331 -6% 23.4s Wayback
Sep 3, 2026, 11:58 AM UTC 100 801 ms 0 0 ms 7.7 kB 3/3 ±0 3,245 +30% 20.4s Wayback
Sep 3, 2026, 1:09 AM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 23.4s
Sep 1, 2026, 11:05 PM UTC 100 799 ms 0 0 ms 7.6 kB 3/3 ±0 2,316 -7% 21.5s Wayback
Aug 31, 2026, 9:22 PM UTC 100 793 ms 0 0 ms 7.7 kB 3/3 ±0 2,471 -1% 21.4s Wayback
Aug 27, 2026, 6:58 PM UTC 100 806 ms 0 0 ms 7.7 kB 3/3 ±3 2,452 -1% 22.5s Wayback