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

bitsofco.de

https://bitsofco.de/

99PERF 97A11Y 100BEST 100SEO ✗AXE –CWV

Ranks Overall #1,162 Built Awesome #797

Data from Oct 3, 2026, 1:45 AM UTC old Measured once a week · 7 runs since Aug 20, 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

Eleventy 2.0.1 Built with Eleventy 2.0.1
Netlify Hosted by Netlify

Lighthouse Scores LAB Simulated

99
Performance
no change
97
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics LAB

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric Lab Simulated
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 1.12 s good ↑ +154 ms (+16%) significant 957 ms – 1.12 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0 good → no change 0 – 0
TBT Total Blocking Time 96 ms good ↓ -7 ms (-6.8%) 87 ms – 103 ms
FCP First Contentful Paint 1.12 s good ↑ +154 ms (+16%) significant 957 ms – 1.12 s
Speed Index 1.12 s good ↑ +154 ms (+16%) significant 957 ms – 1.12 s
TTFB Time to First Byte 705 ms good ↑ +97 ms (+16%) significant 608 ms – 705 ms

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 386 ms
element render delay 49 ms

Page weight

Metric Value Change / range Trend
Page Weight 208 kB ↑ +2.6 kB (+1.3%) 199 kB – 208 kB
Requests 6 ↑ +1 (+20%) significant 5 – 6
Third-party Weight 178 kB ↑ +2.3 kB (+1.3%) 168 kB – 178 kB
Third-party CPU 51 ms ↓ -2 ms (-4%) 48 ms – 53 ms
Unused JS 76.5 kB ↓ -589 B (-0.8%) 74.1 kB – 77.1 kB
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
script 84.9% 177 kB 1
document 11.5% 23.9 kB 1
image 2.6% 5.5 kB 1
other 1% 2.0 kB 3
Total 208 kB 6

Third parties 2 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 177 kB 51 ms
Google Analytics 546 B 0 ms
Total 178 kB 51 ms

Page health

Metric Value Change / range Trend
Main Thread Work 421 ms ↑ +25 ms (+6.2%) 348 ms – 421 ms
Long Tasks 2 → no change 2 – 2
DOM Elements 122 → no change 122 – 122
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 10 → no change 10 – 10
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 1 → no change 1 – 1

Main thread work

Task Time Share Duration Simulated
script evaluation 42% 176 ms
other 22% 95 ms
style layout 21% 89 ms
script parse compile 9% 40 ms
parse HTML 3% 14 ms
paint composite render 2% 7 ms
Total 421 ms

Axe violations axe-core 4.13.0, full rule set

10 violating nodes across 2 rules, 197 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate region — All page content should be contained by landmarks 9 nodes
    Offending elements (5 of 9)
    1. #bitsofcode-logo > span 
      <span class="sr-only">bitsofcode</span>
    2. .post__header > p 
      <p>Articles on frontend engineering</p>
    3. .excerpt:nth-child(1) 
      <article class="excerpt">
    4. .excerpt:nth-child(2) 
      <article class="excerpt">
    5. .excerpt:nth-child(3) 
      <article class="excerpt">
  • moderate landmark-one-main — Document should have one main landmark 1 node
    Offending element
    1. html 
      <html lang="en">

Accessibility failures 1 of 17 audits

  • landmark-one-main — Document does not have a main landmark. 1 node

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
2026-04-11 → 2026-09-26 No data — 25 weeks under the CrUX reporting threshold

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 3, 2026, 1:45 AM UTC 99 1.12 s 0 96 ms 208 kB 3/3 ±1 2,846 +14% 22s Wayback
Sep 25, 2026, 11:15 AM UTC 99 964 ms 0 103 ms 206 kB 3/3 ±4 2,474 0% 22.5s Wayback
Sep 18, 2026, 8:47 AM UTC 99 967 ms 0 100 ms 205 kB 3/3 ±17 2,554 +3% 25.9s Wayback
Sep 11, 2026, 8:36 AM UTC 99 968 ms 0 92 ms 204 kB 3/3 ±43 2,610 +5% 34.5s Wayback
Sep 4, 2026, 5:36 AM UTC 100 969 ms 0 87 ms 201 kB 3/3 ±8 2,861 +15% 24.4s Wayback
Aug 28, 2026, 1:16 AM UTC 99 965 ms 0 101 ms 200 kB 3/3 ±18 2,480 0% 25.8s Wayback
Aug 20, 2026, 3:51 PM UTC 99 957 ms 0 103 ms 199 kB 3/3 ±0 2,397 -4% 21.5s Wayback

Embed this score

Use this web component to show bitsofco.de'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://bitsofco.de/"></speedlify2-score>