wisc.edu

https://www.wisc.edu/

Ranks Overall #1,071 Built Awesome #753

Data from Oct 6, 2026, 5:06 AM UTC 2d old Measured once a week · 7 runs since Aug 21, 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

Hosted by Amazon S3

Lighthouse Scores LAB Simulated

Performance

↑ +3 (+4.7%)

100

Accessibility

no change

Best Practices

no change

100

SEO

no change

Metrics LAB FIELD

Core Web Vitals: passing 3 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-06 → 2026-10-03), url-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	7.06 s poor	↑ +419 ms (+6.3%) 6.64 s – 15.40 s	1.22 s good	92% 5% 3%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	119 ms good	92.5% 7.1% 0.4%
CLS CWV Cumulative Layout Shift	0.009 good	→ no change 0 – 0.009	0 good	99% 0.8% 0.3%
TBT Total Blocking Time	298 ms needs work	↓ -76 ms (-20.3%) 172 ms – 374 ms	n/a	—
FCP First Contentful Paint	2.41 s needs work	↑ +3 ms (+0.1%) 2.41 s – 2.42 s	1.15 s good	88.4% 7.2% 4.5%
Speed Index	2.44 s good	↓ -827 ms (-25.3%) significant 2.41 s – 3.26 s	n/a	—
TTFB Time to First Byte	607 ms good	↑ +3 ms (+0.5%) 604 ms – 613 ms	642 ms good	81.6% 13.4% 5%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

7.06 s poor

↑ +419 ms (+6.3%) 6.64 s – 15.40 s

1.22 s good

92% 5% 3%

INP CWV Interaction to Next Paint — field only, no lab run can measure it

n/a

—

119 ms good

92.5% 7.1% 0.4%

CLS CWV Cumulative Layout Shift

0.009 good

→ no change 0 – 0.009

0 good

99% 0.8% 0.3%

TBT Total Blocking Time

298 ms needs work

↓ -76 ms (-20.3%) 172 ms – 374 ms

n/a

—

FCP First Contentful Paint

2.41 s needs work

↑ +3 ms (+0.1%) 2.41 s – 2.42 s

1.15 s good

88.4% 7.2% 4.5%

Speed Index

2.44 s good

↓ -827 ms (-25.3%) significant 2.41 s – 3.26 s

n/a

—

TTFB Time to First Byte

607 ms good

↑ +3 ms (+0.5%) 604 ms – 613 ms

642 ms good

81.6% 13.4% 5%

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 138 ms

element render delay 81 ms

resource load duration 13 ms

resource load delay 9 ms

LCP LAB Simulated vs LCP FIELD

Lab 7.06 s

Field p75 1.22 s

The lab LCP is 5.77× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	4.22 MB	↓ -457.1 kB (-10%) 4.22 MB – 5.38 MB
Requests	34	↓ -2 (-5.6%) significant 34 – 38
Third-party Weight	911 kB	↑ +5.5 kB (+0.6%) 720 kB – 911 kB
Third-party CPU	205 ms	↓ -18 ms (-8%) 149 ms – 223 ms
Unused JS	403 kB	↑ +5.7 kB (+1.5%) 271 kB – 403 kB
Unused CSS	19.9 kB	↑ +314 B (+1.6%) 16.9 kB – 19.9 kB

Metric

Value

Change / range

Trend

Page Weight

4.22 MB

↓ -457.1 kB (-10%) 4.22 MB – 5.38 MB

Requests

↓ -2 (-5.6%) significant 34 – 38

Third-party Weight

911 kB

↑ +5.5 kB (+0.6%) 720 kB – 911 kB

Third-party CPU

205 ms

↓ -18 ms (-8%) 149 ms – 223 ms

Unused JS

403 kB

↑ +5.7 kB (+1.5%) 271 kB – 403 kB

Unused CSS

19.9 kB

↑ +314 B (+1.6%) 16.9 kB – 19.9 kB

By resource type

Type	Share	Size	Requests
image	76.9%	3.24 MB	12
script	18.8%	793 kB	9
font	3%	124 kB	5
stylesheet	0.7%	29.4 kB	4
document	0.6%	25.4 kB	1
other	<0.1%	600 B	2
Total		4.22 MB	34

Third parties 4 entities

Entity	Transfer	Size	Main thread Simulated
Google Tag Manager	script	775 kB	202 ms
wisc.cloud	font	129 kB	3 ms
Oracle		7.0 kB	1 ms
Google Analytics		48 B	0 ms
Total		911 kB	205 ms

Entity

Transfer

Size

Main thread Simulated

Google Tag Manager

script

775 kB

202 ms

wisc.cloud

font

129 kB

3 ms

Oracle

7.0 kB

1 ms

Google Analytics

48 B

0 ms

Total

911 kB

205 ms

Page health

Metric	Value	Change / range
Main Thread Work	1.52 s	↓ -355 ms (-18.9%) 1.52 s – 2.05 s
Long Tasks	8	↓ -1 (-11.1%) 7 – 10
DOM Elements	620	↑ +3 (+0.5%) 565 – 620
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	1	→ no change 1 – 2
A11y Failures	0	→ no change 0 – 0
A11y Failing Nodes	0	→ no change 0 – 0

Metric

Value

Change / range

Trend

Main Thread Work

1.52 s

↓ -355 ms (-18.9%) 1.52 s – 2.05 s

Long Tasks

↓ -1 (-11.1%) 7 – 10

DOM Elements

620

↑ +3 (+0.5%) 565 – 620

Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)

→ no change 1 – 2

A11y Failures

→ no change 0 – 0

A11y Failing Nodes

→ no change 0 – 0

Main thread work

Task	Share	Duration Simulated
script evaluation	45%	685 ms
other	20%	311 ms
style layout	17%	260 ms
script parse compile	13%	204 ms
paint composite render	2%	33 ms
parse HTML	2%	31 ms
Total		1.52 s

Task

Time

Duration Simulated

script evaluation

45%

685 ms

other

20%

311 ms

style layout

17%

260 ms

script parse compile

13%

204 ms

paint composite render

33 ms

parse HTML

31 ms

Total

1.52 s

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 795 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 1 node
Offending element
1. #skip-link
```
<a class="uw-show-on-focus" href="#main" id="skip-link">Skip to main content</a>
```

Best Practices failures 2 of 19 audits

third-party-cookies — Uses third-party cookies 2 items
inspector-issues — Issues were logged in the `Issues` panel in Chrome Devtools 1 item

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	LCP	INP	CLS	FCP	TTFB
2026-09-26	1.19 s	119 ms	0	1.12 s	626 ms
2026-09-19	1.17 s	119 ms	0	1.09 s	625 ms
2026-09-12	1.19 s	120 ms	0	1.11 s	654 ms
2026-09-05	1.20 s	119 ms	0	1.13 s	694 ms
2026-08-29	1.27 s	118 ms	0	1.19 s	754 ms
2026-08-22	1.33 s	118 ms	0	1.24 s	808 ms
2026-08-15	1.33 s	117 ms	0.200	1.24 s	816 ms
2026-08-08	1.35 s	118 ms	0.210	1.26 s	851 ms
2026-08-01	1.39 s	119 ms	0.210	1.30 s	901 ms
2026-07-25	1.39 s	120 ms	0.210	1.29 s	897 ms
2026-07-18	1.41 s	118 ms	0.200	1.32 s	932 ms
2026-07-11	1.42 s	119 ms	0	1.33 s	941 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-26

1.19 s

119 ms

1.12 s

626 ms

2026-09-19

1.17 s

119 ms

1.09 s

625 ms

2026-09-12

1.19 s

120 ms

1.11 s

654 ms

2026-09-05

1.20 s

119 ms

1.13 s

694 ms

2026-08-29

1.27 s

118 ms

1.19 s

754 ms

2026-08-22

1.33 s

118 ms

1.24 s

808 ms

2026-08-15

1.33 s

117 ms

0.200

1.24 s

816 ms

2026-08-08

1.35 s

118 ms

0.210

1.26 s

851 ms

2026-08-01

1.39 s

119 ms

0.210

1.30 s

901 ms

2026-07-25

1.39 s

120 ms

0.210

1.29 s

897 ms

2026-07-18

1.41 s

118 ms

0.200

1.32 s

932 ms

2026-07-11

1.42 s

119 ms

1.33 s

941 ms

Runs

Every stored run for this URL, newest first.

When	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 6, 2026, 5:06 AM UTC	67	7.06 s	0.009	298 ms	4.22 MB	3/3	±5	2,473 -1%	27.4s	Wayback
Sep 28, 2026, 11:46 PM UTC	64	6.64 s	0.009	374 ms	4.69 MB	3/3	±1	2,455 -1%	28s	Wayback
Sep 21, 2026, 7:55 PM UTC	70	7.36 s	0	172 ms	4.58 MB	3/3	±3	2,645 +6%	27.5s	Wayback
Sep 14, 2026, 5:48 PM UTC	65	15.40 s	0	302 ms	5.10 MB	3/3	±6	2,491 0%	28.8s	Wayback
Sep 7, 2026, 2:57 PM UTC	66	14.86 s	0	278 ms	5.38 MB	3/3	±10	2,509 +1%	29.1s	Wayback
Aug 31, 2026, 10:36 AM UTC	66	12.53 s	0	282 ms	4.87 MB	3/3	±1	2,314 -7%	28s	Wayback
Aug 21, 2026, 2:42 PM UTC	67	10.13 s	0	240 ms	4.39 MB	3/3	±6	2,452 -1%	28.2s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

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Use this web component to show wisc.edu'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!

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Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB FIELD

LCP Subparts LAB 🐇 Unthrottled

LCP LAB 🤖 Simulated vs LCP FIELD

Page weight

By resource type

Third parties 4 entities

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Best Practices failures 2 of 19 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Embed this score

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled

LCP LAB Simulated vs LCP FIELD