docusaurus.io

Data from Aug 22, 2026, 10:21 PM UTC 23h old

Site Generators #17 · 3 measurements · since Aug 20, 2026

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.

Built with Docusaurus 3.10.1

Hosted by Netlify

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-24 → 2026-08-20). This is what Google measures you on.

LCP 1.50 s good

INP 233 ms needs-improvement

CLS 0 good

Scores

Performance

↑ +1 (+1.3%)

Accessibility

no change

100

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.

375 ms
750 ms
1.13 s
1.50 s
1.88 s
2.25 s
2.63 s
3.00 s

Lab metrics Lighthouse, mobile

Metric	Current	Previous	Change	Best	Worst
LCP Largest Contentful Paint	4.00 s	3.96 s	↑ +37 ms (+0.9%)	3.96 s	4.72 s
CLS Cumulative Layout Shift	0	0	→ no change	0	0
TBT Total Blocking Time	307 ms	345 ms	↓ -38 ms (-11%)	307 ms	361 ms
FCP First Contentful Paint	1.53 s	1.52 s	↑ +7 ms (+0.5%)	1.52 s	1.61 s
Speed Index	1.58 s	1.58 s	↓ -5 ms (-0.3%)	1.58 s	1.85 s
TTFB Time to First Byte	465 ms	613 ms	↓ -148 ms (-24.1%)	465 ms	613 ms

Metric

Current

Change

Best

Worst

Trend

LCP Largest Contentful Paint

4.00 s

3.96 s

↑ +37 ms (+0.9%)

3.96 s

4.72 s

CLS Cumulative Layout Shift

→ no change

TBT Total Blocking Time

307 ms

345 ms

↓ -38 ms (-11%)

307 ms

361 ms

FCP First Contentful Paint

1.53 s

1.52 s

↑ +7 ms (+0.5%)

1.52 s

1.61 s

Speed Index

1.58 s

↓ -5 ms (-0.3%)

1.58 s

1.85 s

TTFB Time to First Byte

465 ms

613 ms

↓ -148 ms (-24.1%)

465 ms

613 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 4.00 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 160 ms

time to first byte 37 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-24 → 2026-08-20). This is what Google measures you on.

Metric	p75	Rating	Distribution (good / needs work / poor)
LCP CWV	1.50 s	good	90.9% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run	233 ms	needs-improvement	70.3% good
CLS CWV	0	good	97% good
FCP	1.48 s	good	82.6% good
TTFB	734 ms	good	77.9% good

Metric

p75

Rating

Distribution (good / needs work / poor)

LCP CWV

1.50 s

good

90.9% good

INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run

233 ms

needs-improvement

70.3% good

CLS CWV

good

97% good

FCP

1.48 s

good

82.6% good

TTFB

734 ms

good

77.9% good

Lab vs field

Lab LCP 4.00 s · field p75 1.50 s · real users are 0.37× faster than the lab.

Field history 25 weeks

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

Week ending	LCP	INP	FCP	TTFB
2026-08-15	1.48 s	233 ms	1.47 s	743 ms
2026-08-08	1.46 s	234 ms	1.45 s	698 ms
2026-08-01	1.44 s	222 ms	1.43 s	707 ms
2026-07-25	1.40 s	224 ms	1.40 s	688 ms
2026-07-18	1.35 s	222 ms	1.35 s	667 ms
2026-07-11	1.33 s	218 ms	1.33 s	681 ms
2026-07-04	1.40 s	218 ms	1.40 s	698 ms
2026-06-27	1.44 s	210 ms	1.44 s	705 ms
2026-06-20	1.40 s	208 ms	1.40 s	691 ms
2026-06-13	1.45 s	219 ms	1.48 s	740 ms
2026-06-06	1.44 s	235 ms	1.44 s	740 ms
2026-05-30	1.41 s	240 ms	1.42 s	743 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-08-15

1.48 s

233 ms

1.47 s

743 ms

2026-08-08

1.46 s

234 ms

1.45 s

698 ms

2026-08-01

1.44 s

222 ms

1.43 s

707 ms

2026-07-25

1.40 s

224 ms

1.40 s

688 ms

2026-07-18

1.35 s

222 ms

1.35 s

667 ms

2026-07-11

1.33 s

218 ms

1.33 s

681 ms

2026-07-04

1.40 s

218 ms

1.40 s

698 ms

2026-06-27

1.44 s

210 ms

1.44 s

705 ms

2026-06-20

1.40 s

208 ms

1.40 s

691 ms

2026-06-13

1.45 s

219 ms

1.48 s

740 ms

2026-06-06

1.44 s

235 ms

1.44 s

740 ms

2026-05-30

1.41 s

240 ms

1.42 s

743 ms

Page weight

Metric	Current	Previous	Change	Best	Worst
Page Weight	773 kB	772 kB	↑ +491 B (+0.1%)	772 kB	773 kB
Requests	49	49	→ no change	49	50
Third-party Weight	267 kB	266 kB	↑ +576 B (+0.2%)	266 kB	267 kB
Third-party CPU	67 ms	64 ms	↑ +3 ms (+4.5%)	64 ms	68 ms
Unused JS	119 kB	118 kB	↑ +442 B (+0.4%)	115 kB	119 kB
Unused CSS	0 B	0 B	→ no change	0 B	0 B

Metric

Current

Change

Best

Worst

Trend

Page Weight

773 kB

772 kB

↑ +491 B (+0.1%)

772 kB

773 kB

Requests

→ no change

Third-party Weight

267 kB

266 kB

↑ +576 B (+0.2%)

266 kB

267 kB

Third-party CPU

67 ms

64 ms

↑ +3 ms (+4.5%)

64 ms

68 ms

Unused JS

119 kB

118 kB

↑ +442 B (+0.4%)

115 kB

119 kB

Unused CSS

0 B

→ no change

0 B

By resource type

script 477 kB · 7 req

image 154 kB · 14 req

other 91.1 kB · 18 req

stylesheet 36.9 kB · 2 req

document 14.2 kB · 2 req

third party 273 kB · 7 req

Third parties 3 entities

267 kB transferred, 67 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Google Tag Manager 170 kB · 67 ms CPU

YouTube 64.6 kB · 0 ms CPU

unavatar.io 32.0 kB · 0 ms CPU

Page health

Metric	Current	Previous	Change	Best	Worst
Main Thread Work	2.00 s	2.09 s	↓ -88 ms (-4.2%)	2.00 s	2.09 s
Long Tasks	6	6	→ no change	6	6
DOM Elements	436	436	→ no change	436	436
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset	3	3	→ no change	3	3
A11y Failures	1	1	→ no change	1	1
A11y Failing Nodes	1	1	→ no change	1	1

Main thread work

script evaluation 878 ms

other 451 ms

style layout 313 ms

script parse compile 215 ms

paint composite render 90 ms

parse HTML 44 ms

garbage collection 13 ms

Axe violations axe-core 4.13.0, full rule set

3 violating nodes across 3 rules, 664 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.

minor aria-allowed-role — ARIA role should be appropriate for the element 1 node
moderate heading-order — Heading levels should only increase by one 1 node
serious nested-interactive — Interactive controls must not be nested 1 node

Accessibility failures 1 of 27 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.

heading-order — Heading elements are not in a sequentially-descending order 1 node

Hygiene

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

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3

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	Perf	LCP	TBT	Weight	Runs	Spread	Bench	Took
Aug 22, 2026, 10:21 PM UTC	80	4.00 s	307 ms	773 kB	3/3	±20	2,475	33.3s
Aug 21, 2026, 9:24 PM UTC	79	3.96 s	345 ms	772 kB	3/3	±1	2,363	30.9s
Aug 20, 2026, 8:31 PM UTC	74	4.72 s	361 ms	773 kB	3/3	±19	2,485	33.6s

When

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Aug 22, 2026, 10:21 PM UTC

4.00 s

307 ms

773 kB

3/3

±20

2,475

33.3s

Aug 21, 2026, 9:24 PM UTC

3.96 s

345 ms

772 kB

3/3

±1

2,363

30.9s

Aug 20, 2026, 8:31 PM UTC

4.72 s

361 ms

773 kB

3/3

±19

2,485

33.6s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show docusaurus.io'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://docusaurus.io/"></speedlify2-score>