speedlify2

Lighthouse lab metrics and Chrome UX Report field data for a list of sites, recorded on every run and compared over time.

Measurement runs · Embed a score · Field data from the Chrome UX Report ·

bite-sized-a11y.com

https://bite-sized-a11y.com/

Data from Aug 20, 2026, 7:08 PM UTC — 22h old.

Built Awesome · 1 measurement · since Aug 20, 2026 · last attempt 22h

This URL redirects to https://bite-sized-a11y.com/lander.

Lighthouse follows the redirect, so the numbers below describe the destination page, not this one. Not yet confirmed as a move; it needs to lead to the same place on several consecutive runs first.

Scores

83
Performance
no change
75
Accessibility
no change
73
Best Practices
no change
73
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 3.92 s — — 3.92 s 3.92 s
CLS Cumulative Layout Shift 0.073 — — 0.073 0.073
TBT Total Blocking Time 172 ms — — 172 ms 172 ms
FCP First Contentful Paint 1.75 s — — 1.75 s 1.75 s
Speed Index 1.79 s — — 1.79 s 1.79 s
TTFB Time to First Byte 638 ms — — 638 ms 638 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 327.1 kB — — 327.1 kB 327.1 kB
Requests 24 — — 24 24
Third-party Weight 0 B — — 0 B 0 B
Third-party CPU 0 ms — — 0 ms 0 ms
Unused JS 114.1 kB — — 114.1 kB 114.1 kB
Unused CSS 0 B — — 0 B 0 B

By resource type

script 242.9 kB · 4 req
font 66.3 kB · 2 req
other 7.4 kB · 13 req
stylesheet 5.5 kB · 2 req
document 5.0 kB · 3 req
third party 323.4 kB · 20 req

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 810 ms — — 810 ms 810 ms
Long Tasks 3 — — 3 3
A11y Failures 3 — — 3 3
A11y Failing Nodes 3 — — 3 3

Main thread work

script evaluation 422 ms
other 239 ms
script parse compile 79 ms
garbage collection 39 ms
style layout 20 ms
paint composite render 8 ms
parse HTML 5 ms

Axe violations axe-core , full rule set

The axe run failed: Navigation timeout of 120000 ms exceeded

Accessibility failures 3 of 12 audits

Tracked as a count, not just the score — the weighted score is coarse enough that you can ship a broken component and barely move it.

  • document-title — Document doesn't have a `<title>` element 1 node
  • meta-viewport — `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. 1 node
  • landmark-one-main — Document does not have a main landmark. 1 node

Hygiene

Changes rarely — which is exactly why a change is worth noticing.

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache http/1.1 1 console error

Measurement log

Every stored run for this URL, newest first. Failures are kept as records — "this site was down on Tuesday" is data too.

When PerfLCPCLSTBTWeight RunsSpreadBenchTook
Aug 20, 2026, 7:08 PM UTC 83 3.92 s 0.073 172 ms 327.1 kB 3/3 ±21 2,327 283.4s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show bite-sized-a11y.com's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify-score.js component code into your site! 

<speedlify-score speedlify-url="https://zachleat.github.io/speedlify2/" url="https://bite-sized-a11y.com/"></speedlify-score>