underarmour.com

https://www.underarmour.com/

Ranks Overall #1,539 Next.js Showcase #17

Data from Sep 22, 2026, 2:33 PM UTC 6h old Measured once a week · 2 runs since Sep 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

This URL redirects to https://www.underarmour.com/en-us/.

The site’s front door pointing at the page it serves there — a locale or CMS landing path, not a move. The origin is still the address of the site, so history stays under it rather than forking to a path that depends on where the measurement ran. Lighthouse follows the redirect, so the numbers below describe the page actually served; the only cost is an extra hop on each run.

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 3,418, 38% faster than this project's median of 2,484. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

Built with Next.js

Uses React

Va Hosted by Self-hosted

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 44.37 s. Compare this filmstrip against another site.

4.18 s
11.09 s
16.64 s
22.19 s
27.73 s
33.28 s
38.83 s
44.37 s

Lighthouse Scores LAB Simulated

Performance

no change

Accessibility

no change

Best Practices

no change

SEO

no change

Metrics LAB FIELD

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

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-08-24 → 2026-09-20), origin-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	18.75 s poor	— 18.75 s – 18.75 s	2.00 s good	82.1% 9.6% 8.3%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	312 ms needs work	58.3% 26.5% 15.2%
CLS CWV Cumulative Layout Shift	0 good	— 0 – 0	0.160 needs work	70.8% 10.4% 18.8%
TBT Total Blocking Time	3.15 s poor	— 3.15 s – 3.15 s	n/a	—
FCP First Contentful Paint	1.96 s needs work	— 1.96 s – 1.96 s	1.60 s good	79.7% 12.3% 8.1%
Speed Index	12.72 s poor	— 12.72 s – 12.72 s	n/a	—
TTFB Time to First Byte	613 ms good	— 613 ms – 613 ms	896 ms needs work	69.9% 22.6% 7.5%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

18.75 s poor

— 18.75 s – 18.75 s

2.00 s good

82.1% 9.6% 8.3%

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

n/a

—

312 ms needs work

58.3% 26.5% 15.2%

CLS CWV Cumulative Layout Shift

0 good

— 0 – 0

0.160 needs work

70.8% 10.4% 18.8%

TBT Total Blocking Time

3.15 s poor

— 3.15 s – 3.15 s

n/a

—

FCP First Contentful Paint

1.96 s needs work

— 1.96 s – 1.96 s

1.60 s good

79.7% 12.3% 8.1%

Speed Index

12.72 s poor

— 12.72 s – 12.72 s

n/a

—

TTFB Time to First Byte

613 ms good

— 613 ms – 613 ms

896 ms needs work

69.9% 22.6% 7.5%

LCP Subparts LAB Throttled

The subparts attribute LCP to your server, resource discovery, download, or rendering. They come from one throttled load, the same one as the filmstrip, so they add up to that load’s LCP rather than the simulated Lab LCP above.

resource load duration 10.17 s

time to first byte 1.19 s

element render delay 67 ms

LCP LAB Simulated vs LCP FIELD

Lab 18.75 s

Field p75 2.00 s

The lab LCP is 9.39× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	66.45 MB	— 66.45 MB – 66.45 MB
Requests	318	— 318 – 318
Third-party Weight	64.63 MB	— 64.63 MB – 64.63 MB
Third-party CPU	661 ms	— 661 ms – 661 ms
Unused JS	1.58 MB	— 1.58 MB – 1.58 MB
Unused CSS	133 kB	— 133 kB – 133 kB

Metric

Value

Change / range

Trend

Page Weight

66.45 MB

— 66.45 MB – 66.45 MB

Requests

318

— 318 – 318

Third-party Weight

64.63 MB

— 64.63 MB – 64.63 MB

Third-party CPU

661 ms

— 661 ms – 661 ms

Unused JS

1.58 MB

— 1.58 MB – 1.58 MB

Unused CSS

133 kB

— 133 kB – 133 kB

By resource type

Type	Share	Size	Requests
media	89.1%	59.20 MB	8
script	6.3%	4.20 MB	127
image	2.8%	1.86 MB	33
font	0.9%	594 kB	16
other	0.5%	307 kB	99
stylesheet	0.3%	232 kB	28
document	0.1%	54.4 kB	5
Total		66.45 MB	318

Third parties 29 entities

Entity	Transfer	Size	Main thread Simulated
Adobe Scene7	media	62.81 MB	0 ms
Google Tag Manager		632 kB	191 ms
Curalate		219 kB	50 ms
Facebook		196 kB	109 ms
TikTok		164 kB	60 ms
All 29		64.63 MB	661 ms

Entity

Transfer

Size

Main thread Simulated

Adobe Scene7

media

62.81 MB

0 ms

Google Tag Manager

632 kB

191 ms

Curalate

219 kB

50 ms

Facebook

196 kB

109 ms

TikTok

164 kB

60 ms

All 29

64.63 MB

661 ms

Without JavaScript

The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.

66.9% of pixels differ — the page changes substantially. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Page health

Metric	Value	Change / range
Main Thread Work	15.27 s	— 15.27 s – 15.27 s
Long Tasks	20	— 20 – 20
DOM Elements	2,997	— 2,997 – 2,997
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	10	— 10 – 10
A11y Failures	1	— 1 – 1
A11y Failing Nodes	1	— 1 – 1

Metric

Value

Change / range

Trend

Main Thread Work

15.27 s

— 15.27 s – 15.27 s

Long Tasks

— 20 – 20

DOM Elements

2,997

— 2,997 – 2,997

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

— 10 – 10

A11y Failures

— 1 – 1

A11y Failing Nodes

— 1 – 1

Main thread work

Task	Share	Duration Simulated
script evaluation	51%	7.72 s
style layout	20%	3.00 s
other	18%	2.82 s
script parse compile	7%	1.07 s
garbage collection	2%	291 ms
parse HTML	2%	254 ms
paint composite render	1%	115 ms
Total		15.27 s

Task

Time

Duration Simulated

script evaluation

51%

7.72 s

style layout

20%

3.00 s

other

18%

2.82 s

script parse compile

1.07 s

garbage collection

291 ms

parse HTML

254 ms

paint composite render

115 ms

Total

15.27 s

Axe violations axe-core 4.13.0, full rule set

10 violating nodes across 6 rules, 2144 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

minor aria-allowed-role — ARIA role should be appropriate for the element 3 nodes
serious link-name — Links must have discernible text 3 nodes
serious color-contrast — Elements must meet minimum color contrast ratio thresholds 1 node
moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
moderate page-has-heading-one — Page should contain a level-one heading 1 node
moderate region — All page content should be contained by landmarks 1 node

Accessibility failures 1 of 11 audits

color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 1 node

Best Practices failures 4 of 20 audits

third-party-cookies — Uses third-party cookies 26 items
image-size-responsive — Serves images with low resolution 1 item
inspector-issues — Issues were logged in the `Issues` panel in Chrome Devtools 1 item
valid-source-maps — Missing source maps for large first-party JavaScript 7 items

SEO failures 1 of 9 audits

robots-txt — robots.txt is not valid 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
2026-09-19	2.00 s	306 ms	0.160	1.60 s	899 ms
2026-09-12	2.02 s	287 ms	0.180	1.60 s	901 ms
2026-09-05	2.01 s	279 ms	0.150	1.60 s	901 ms
2026-08-29	2.01 s	265 ms	0.150	1.61 s	912 ms
2026-08-22	2.00 s	258 ms	0.180	1.61 s	912 ms
2026-08-15	2.00 s	251 ms	0.210	1.61 s	914 ms
2026-08-08	2.04 s	245 ms	0.240	1.63 s	934 ms
2026-08-01	2.01 s	254 ms	0.300	1.59 s	929 ms
2026-07-25	2.01 s	262 ms	0.310	1.58 s	936 ms
2026-07-18	2.01 s	271 ms	0.320	1.57 s	940 ms
2026-07-11	1.98 s	280 ms	0.330	1.56 s	935 ms
2026-07-04	2.02 s	288 ms	0.320	1.60 s	959 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-19

2.00 s

306 ms

0.160

1.60 s

899 ms

2026-09-12

2.02 s

287 ms

0.180

1.60 s

901 ms

2026-09-05

2.01 s

279 ms

0.150

1.60 s

901 ms

2026-08-29

2.01 s

265 ms

0.150

1.61 s

912 ms

2026-08-22

2.00 s

258 ms

0.180

1.61 s

912 ms

2026-08-15

2.00 s

251 ms

0.210

1.61 s

914 ms

2026-08-08

2.04 s

245 ms

0.240

1.63 s

934 ms

2026-08-01

2.01 s

254 ms

0.300

1.59 s

929 ms

2026-07-25

2.01 s

262 ms

0.310

1.58 s

936 ms

2026-07-18

2.01 s

271 ms

0.320

1.57 s

940 ms

2026-07-11

1.98 s

280 ms

0.330

1.56 s

935 ms

2026-07-04

2.02 s

288 ms

0.320

1.60 s

959 ms

Runs

Every stored run for this URL, newest first.

When Scores Perf LCP CLS TBT Weight Runs Spread Bench Took Archive

Sep 22, 2026, 2:33 PM UTC 34 18.75 s 0 3.15 s 66.45 MB 3/3 ±0 3,418 +38% 180.4s Wayback

Sep 21, 2026, 11:23 PM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 168.7s

When	Scores	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Sep 22, 2026, 2:33 PM UTC		34	18.75 s	0	3.15 s	66.45 MB	3/3	±0	3,418 +38%	180.4s	Wayback
Sep 21, 2026, 11:23 PM UTC		`TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse.`	168.7s

Stack

Filmstrip LAB 🐢 Throttled

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB FIELD

LCP Subparts LAB 🐢 Throttled

LCP LAB 🤖 Simulated vs LCP FIELD

Page weight

By resource type

Third parties 29 entities

Without JavaScript

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 1 of 11 audits

Best Practices failures 4 of 20 audits

SEO failures 1 of 9 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Filmstrip LAB Throttled

Lighthouse Scores LAB Simulated

LCP Subparts LAB Throttled

LCP LAB Simulated vs LCP FIELD