gsap.com

Data from Aug 20, 2026, 11:29 PM UTC — 19h old.

Built Awesome · 1 measurement · since Aug 20, 2026 · last attempt 19h

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.

Hosted by Cloudflare

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-22 → 2026-08-18). This is what Google measures you on.

LCP 4.25 s poor

INP 128 ms good

CLS 0 good

Scores

Performance

no change

Accessibility

no change

100

Best Practices

no change

100

SEO

no change

Lab metrics Lighthouse, mobile

Metric	Current	Previous	Change	Best	Worst
LCP Largest Contentful Paint	3.36 s	—	—	3.36 s	3.36 s
CLS Cumulative Layout Shift	0	—	—	0	0
TBT Total Blocking Time	153 ms	—	—	153 ms	153 ms
FCP First Contentful Paint	1.53 s	—	—	1.53 s	1.53 s
Speed Index	2.62 s	—	—	2.62 s	2.62 s
TTFB Time to First Byte	608 ms	—	—	608 ms	608 ms

What LCP is made of

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

time to first byte 293 ms

element render delay 124 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-22 → 2026-08-18). This is what Google measures you on.

Metric	p75	Rating	Distribution (good / needs work / poor)
LCP CWV	4.25 s	poor	60.5% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run	128 ms	good	86.3% good
CLS CWV	0	good	98.8% good
FCP	1.92 s	needs-improvement	69.9% good
TTFB	1.60 s	needs-improvement	37% good

Metric

p75

Rating

Distribution (good / needs work / poor)

LCP CWV

4.25 s

poor

60.5% good

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

128 ms

good

86.3% good

CLS CWV

good

98.8% good

FCP

1.92 s

needs-improvement

69.9% good

TTFB

1.60 s

needs-improvement

37% good

Lab vs field

Lab LCP 3.36 s · field p75 4.25 s · real users are 1.26× slower 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	4.44 s	128 ms	1.91 s	1.59 s
2026-08-08	4.61 s	130 ms	1.91 s	1.60 s
2026-08-01	4.58 s	128 ms	1.90 s	1.59 s
2026-07-25	4.27 s	129 ms	1.90 s	1.59 s
2026-07-18	3.75 s	130 ms	1.88 s	1.59 s
2026-07-11	3.35 s	130 ms	1.87 s	1.57 s
2026-07-04	3.37 s	132 ms	1.85 s	1.55 s
2026-06-27	3.48 s	130 ms	1.84 s	1.54 s
2026-06-20	3.51 s	130 ms	1.84 s	1.54 s
2026-06-13	3.50 s	128 ms	1.83 s	1.52 s
2026-06-06	3.60 s	129 ms	1.87 s	1.54 s
2026-05-30	3.53 s	130 ms	1.87 s	1.53 s

Week ending

LCP

INP

CLS

FCP

TTFB

2026-08-15

4.44 s

128 ms

1.91 s

1.59 s

2026-08-08

4.61 s

130 ms

1.91 s

1.60 s

2026-08-01

4.58 s

128 ms

1.90 s

1.59 s

2026-07-25

4.27 s

129 ms

1.90 s

1.59 s

2026-07-18

3.75 s

130 ms

1.88 s

1.59 s

2026-07-11

3.35 s

130 ms

1.87 s

1.57 s

2026-07-04

3.37 s

132 ms

1.85 s

1.55 s

2026-06-27

3.48 s

130 ms

1.84 s

1.54 s

2026-06-20

3.51 s

130 ms

1.84 s

1.54 s

2026-06-13

3.50 s

128 ms

1.83 s

1.52 s

2026-06-06

3.60 s

129 ms

1.87 s

1.54 s

2026-05-30

3.53 s

130 ms

1.87 s

1.53 s

Page weight

Metric	Current	Previous	Change	Best	Worst
Page Weight	2.02 MB	—	—	2.02 MB	2.02 MB
Requests	36	—	—	36	36
Third-party Weight	181.2 kB	—	—	181.2 kB	181.2 kB
Third-party CPU	77 ms	—	—	77 ms	77 ms
Unused JS	128.5 kB	—	—	128.5 kB	128.5 kB
Unused CSS	12.8 kB	—	—	12.8 kB	12.8 kB

By resource type

media 1.34 MB · 13 req

script 302.0 kB · 7 req

image 217.4 kB · 6 req

document 79.7 kB · 1 req

font 77.3 kB · 2 req

other 4.1 kB · 3 req

third party 181.2 kB · 2 req

Third parties 2 entities

181.2 kB transferred, 77 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Google Tag Manager 169.8 kB · 74 ms CPU

Cloudflare 11.5 kB · 4 ms CPU

Page health

Metric	Current	Previous	Change	Best	Worst
Main Thread Work	3.12 s	—	—	3.12 s	3.12 s
Long Tasks	4	—	—	4	4
DOM Elements	1,552	—	—	1,552	1,552
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset	2	—	—	2	2
A11y Failures	3	—	—	3	3
A11y Failing Nodes	3	—	—	3	3

Main thread work

other 1.41 s

script evaluation 822 ms

style layout 478 ms

paint composite render 239 ms

parse HTML 85 ms

script parse compile 70 ms

garbage collection 13 ms

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 846 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.

moderate heading-order — Heading levels should only increase by one 1 node
serious link-name — Links must have discernible text 1 node

Accessibility failures 3 of 23 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
link-name — Links do not have a discernible name 1 node
target-size — Touch targets do not have sufficient size or spacing. 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

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	CLS	TBT	Weight	Runs	Spread	Bench	Took
Aug 20, 2026, 11:29 PM UTC	89	3.36 s	0	153 ms	2.02 MB	3/3	±7	2,474	37s

When

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Aug 20, 2026, 11:29 PM UTC

3.36 s

153 ms

2.02 MB

3/3

±7

2,474

37s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show gsap.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://gsap.com/"></speedlify-score>