speedlify2

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

Measurement runs · Embed a score ·

pages.github.com

https://pages.github.com/

63 100 96 100 0AXE ✗CWV

Data from Aug 23, 2026, 6:39 AM UTC 15h old

Web Hosts #5 · 3 measurements · since Aug 21, 2026

This URL redirects to https://docs.github.com/en/pages.

Lighthouse follows the redirect, so the numbers below describe the destination page, not this one. The redirect is temporary (302/303/307), so it is treated as a detour rather than a move and history stays here.

The measuring machine was faster than usual.

Lighthouse benchmark index was 3232.5 against a baseline of 2495 (29.599999999999998%). CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

Stack

Detected on the same page load as the accessibility pass — the generator from <meta name="generator"> or the shape of the page, the host from response headers.

Next.js Built with Next.js
GitHub Pages Hosted by GitHub Pages

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-25 → 2026-08-21). This is what Google measures you on.

LCP 1.87 s good
INP 360 ms needs-improvement
CLS 0 good

Scores

63
Performance
↑ +1 (+1.6%)
100
Accessibility
no change
96
Best Practices
no change
100
SEO
no change

Filmstrip Lighthouse, mobile

How the page drew during the measured load, at 8 points across 3.00 s.

  1. 375 ms
  2. 750 ms
  3. 1.13 s
  4. 1.50 s
  5. 1.88 s
  6. 2.25 s
  7. 2.63 s
  8. 3.00 s

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 9.46 s 10.41 s ↓ -953 ms (-9.2%) significant 9.46 s 10.66 s
CLS Cumulative Layout Shift 0 0 → no change 0 0.016
TBT Total Blocking Time 378 ms 417 ms ↓ -39 ms (-9.4%) 378 ms 439 ms
FCP First Contentful Paint 2.42 s 2.41 s ↑ +8 ms (+0.3%) 2.40 s 2.42 s
Speed Index 2.42 s 2.41 s ↑ +8 ms (+0.3%) 2.40 s 2.42 s
TTFB Time to First Byte 609 ms 602 ms ↑ +7 ms (+1.2%) 602 ms 609 ms

What LCP is made of observed, unthrottled

A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.

Measured on the trace before throttling is modelled, so these are real durations that will not sum to the 9.46 s above — that figure is a simulation of the same load on a slow phone and connection. Read these for the proportions: which phase dominates.

element render delay 64 ms
resource load duration 15 ms
time to first byte 10 ms
resource load delay 10 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-25 → 2026-08-21). This is what Google measures you on.

Metric p75 Rating Distribution (good / needs work / poor)
LCP CWV 1.87 s good 84.8% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run 360 ms needs-improvement 6.6% good
CLS CWV 0 good 82.6% good
FCP 1.62 s good 78.8% good
TTFB 783 ms good 75.8% good

Lab vs field

Lab LCP 9.46 s · field p75 1.87 s · real users are 0.2× faster than the lab.

Field history 25 weeks

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

Week ending LCPINPCLSFCPTTFB
2026-08-15 1.87 s 360 ms 0 1.62 s 776 ms
2026-08-08 1.88 s 363 ms 0 1.62 s 773 ms
2026-08-01 1.89 s 363 ms 0 1.63 s 783 ms
2026-07-25 1.89 s 362 ms 0 1.63 s 783 ms
2026-07-18 1.90 s 362 ms 0 1.63 s 783 ms
2026-07-11 1.92 s 363 ms 0 1.65 s 788 ms
2026-07-04 1.94 s 362 ms 0 1.67 s 792 ms
2026-06-27 1.95 s 361 ms 0 1.68 s 791 ms
2026-06-20 1.95 s 361 ms 0 1.68 s 786 ms
2026-06-13 1.93 s 361 ms 0 1.66 s 777 ms
2026-06-06 1.90 s 361 ms 0 1.65 s 764 ms
2026-05-30 1.89 s 365 ms 0 1.63 s 756 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 3.45 MB 3.45 MB ↑ +161 B 3.45 MB 3.60 MB
Requests 55 56 ↓ -1 (-1.8%) 55 57
Third-party Weight 0 B 0 B → no change 0 B 0 B
Third-party CPU 0 ms 0 ms → no change 0 ms 0 ms
Unused JS 157 kB 156 kB ↑ +924 B (+0.6%) 156 kB 173 kB
Unused CSS 119 kB 119 kB → no change 119 kB 119 kB

By resource type

image 2.71 MB · 16 req
script 532 kB · 20 req
stylesheet 158 kB · 6 req
document 23.3 kB · 2 req
other 16.8 kB · 10 req
font 3.7 kB · 1 req
third party 3.45 MB · 55 req

Page health

Metric Current Previous Change Best Worst Trend
DOM Elements 235 235 → no change 235 235
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset 0 0 → no change 0 0
A11y Failures 0 0 → no change 0 0
A11y Failing Nodes 0 0 → no change 0 0

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 614 passing. This is a standalone axe run, stricter than the subset Lighthouse folds into its score above — and it is the second tiebreaker in the ranking.

Hygiene

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

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 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 23, 2026, 6:39 AM UTC 63 9.46 s 0 378 ms 3.45 MB 3/3 ±13 3,233 71.9s
Aug 22, 2026, 6:38 AM UTC 62 10.41 s 0 417 ms 3.45 MB 3/3 ±8 2,497 167.2s
Aug 21, 2026, 5:44 AM UTC 61 10.66 s 0.016 439 ms 3.60 MB 3/3 ±18 2,494 120.7s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show pages.github.com's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify2-score.js component code into your site! 

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://pages.github.com/"></speedlify2-score>