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

rkblog.dev

https://rkblog.dev/

100PERF 100A11Y 100BEST 100SEO βœ“AXE βœ“CWV

Ranks Overall #8 Built Awesome #7

Data from Oct 4, 2026, 7:13 PM UTC old Measured once a week Β· 7 runs since Aug 21, 2026

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

Eleventy Built with Eleventy
Cloudflare Hosted by Cloudflare

Lighthouse Scores LAB Simulated

100
Performance
↑ +1 (+1%)
100
Accessibility
no change
100
Best Practices
no change
100
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 (2026-09-05 → 2026-10-02), origin-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 804 ms good ↓ -722 ms (-47.3%) significant 784 ms – 1.61 s 885 ms good 97.5% 2.1% 0.4%
INP CWV Interaction to Next Paint β€” field only, no lab run can measure it n/a — — —
CLS CWV Cumulative Layout Shift 0 good β†’ no change 0 – 0 0 good 95.6% 3.4% 1%
TBT Total Blocking Time 74 ms good ↓ -40 ms (-35.1%) 28 ms – 114 ms n/a —
FCP First Contentful Paint 804 ms good ↓ -722 ms (-47.3%) significant 784 ms – 1.54 s 862 ms good 96.3% 2.4% 1.4%
Speed Index 804 ms good ↓ -722 ms (-47.3%) significant 784 ms – 1.54 s n/a —
TTFB Time to First Byte 473 ms good ↓ -142 ms (-23.1%) significant 469 ms – 621 ms 568 ms good 81.8% 14.5% 3.7%

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.

time to first byte 51 ms
element render delay 32 ms

LCP LAB Simulated vs LCP FIELD

Lab 804 ms
Field p75 885 ms

The lab LCP is 0.91Γ— the field p75 β€” real users likely have similar hardware or network connectivity to the lab test.

Page weight

Metric Value Change / range Trend
Page Weight 186 kB ↓ -6.9 kB (-3.7%) 186 kB – 193 kB
Requests 6 ↓ -2 (-25%) significant 6 – 8
Third-party Weight 178 kB ↓ -8.1 kB (-4.5%) 178 kB – 187 kB
Third-party CPU 60 ms ↑ +1 ms (+1.2%) 43 ms – 60 ms
Unused JS 75.5 kB ↓ -1.6 kB (-2.1%) 73.8 kB – 77.1 kB
Unused CSS 0 B β†’ no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
script 96.7% 178 kB 1
document 2.8% 5.2 kB 1
image 0.4% 808 B 2
Total 186 kB 6

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 178 kB 60 ms
Total 178 kB 60 ms

Without JavaScript

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

Scripts disabled
As rendered

0% of pixels differ — they are 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 357 ms ↓ -55 ms (-13.3%) 293 ms – 412 ms
Long Tasks 2 β†’ no change 2 – 2
DOM Elements 114 ↓ -1 (-0.9%) 114 – 115
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 β†’ no change 0 – 0
A11y Failures 0 β†’ no change 0 – 0
A11y Failing Nodes 0 β†’ no change 0 – 0

Main thread work

Task Time Share Duration Simulated
script evaluation 59% 210 ms
other 19% 69 ms
script parse compile 12% 45 ms
style layout 5% 20 ms
paint composite render 2% 7 ms
parse HTML 2% 7 ms
Total 357 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 155 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 h3

Measurement log

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-09-26 937 ms β€” 0 883 ms 603 ms
2026-09-19 903 ms β€” 0 883 ms 701 ms
2026-09-12 924 ms β€” 0 885 ms 666 ms
2026-09-05 873 ms β€” 0 874 ms 655 ms
2026-08-29 903 ms β€” 0 885 ms 596 ms
2026-08-22 914 ms β€” 0 874 ms 539 ms
2026-08-15 918 ms β€” 0 914 ms 535 ms
2026-08-08 936 ms β€” 0 933 ms 527 ms
2026-08-01 877 ms β€” 0 874 ms 515 ms
2026-07-25 933 ms β€” 0 904 ms 517 ms
2026-07-18 937 ms β€” 0 873 ms 536 ms
2026-07-11 1.02 s β€” 0 1.01 s 668 ms

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 4, 2026, 7:13 PM UTC 100 804 ms 0 74 ms 186 kB 3/3 Β±2 2,481 0% 22.1s Wayback
Sep 27, 2026, 5:32 PM UTC 99 1.53 s 0 114 ms 193 kB 3/3 Β±2 2,491 0% 21.6s Wayback
Sep 20, 2026, 2:31 PM UTC 100 784 ms 0 28 ms 192 kB 3/3 Β±2 2,992 +20% 21s Wayback
Sep 13, 2026, 1:45 PM UTC 99 800 ms 0 114 ms 191 kB 3/3 Β±3 2,487 0% 22.1s Wayback
Sep 6, 2026, 10:20 AM UTC 99 1.54 s 0 89 ms 190 kB 3/3 Β±1 2,603 +5% 22.4s Wayback
Aug 30, 2026, 1:14 AM UTC 100 1.52 s 0 55 ms 187 kB 3/3 Β±1 2,461 -1% 21.5s Wayback
Aug 21, 2026, 5:40 AM UTC 99 1.61 s 0 55 ms 187 kB 3/3 Β±1 2,353 -5% 21.3s Wayback

Embed this score

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