upstart.com

https://www.upstart.com/

Ranks Overall #1,534 Next.js Showcase #16

Data from Sep 21, 2026, 11:19 PM UTC 22h old Measured once a week · 1 run since Sep 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

Built with Next.js

Uses React

Hosted by Vercel

Filmstrip LAB Throttled

How the page drew during the measured load, at 8 points across 17.93 s. Compare this filmstrip against another site.

2.03 s
4.48 s
6.72 s
8.96 s
11.20 s
13.45 s
15.69 s
17.93 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 (2026-08-23 → 2026-09-19), url-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	16.34 s poor	— 16.34 s – 16.34 s	1.45 s good	90.4% 5.8% 3.8%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	119 ms good	92.8% 6.3% 0.9%
CLS CWV Cumulative Layout Shift	0.099 good	— 0.099 – 0.099	0.190 needs work	58.9% 39.4% 1.7%
TBT Total Blocking Time	957 ms poor	— 957 ms – 957 ms	n/a	—
FCP First Contentful Paint	6.72 s poor	— 6.72 s – 6.72 s	1.24 s good	87.6% 8.5% 3.8%
Speed Index	7.54 s poor	— 7.54 s – 7.54 s	n/a	—
TTFB Time to First Byte	660 ms good	— 660 ms – 660 ms	724 ms good	79.4% 16% 4.6%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

16.34 s poor

— 16.34 s – 16.34 s

1.45 s good

90.4% 5.8% 3.8%

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

n/a

—

119 ms good

92.8% 6.3% 0.9%

CLS CWV Cumulative Layout Shift

0.099 good

— 0.099 – 0.099

0.190 needs work

58.9% 39.4% 1.7%

TBT Total Blocking Time

957 ms poor

— 957 ms – 957 ms

n/a

—

FCP First Contentful Paint

6.72 s poor

— 6.72 s – 6.72 s

1.24 s good

87.6% 8.5% 3.8%

Speed Index

7.54 s poor

— 7.54 s – 7.54 s

n/a

—

TTFB Time to First Byte

660 ms good

— 660 ms – 660 ms

724 ms good

79.4% 16% 4.6%

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.

element render delay 12.79 s

time to first byte 720 ms

LCP LAB Simulated vs LCP FIELD

Lab 16.34 s

Field p75 1.45 s

The lab LCP is 11.24× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	2.65 MB	— 2.65 MB – 2.65 MB
Requests	129	— 129 – 129
Third-party Weight	517 kB	— 517 kB – 517 kB
Third-party CPU	70 ms	— 70 ms – 70 ms
Unused JS	696 kB	— 696 kB – 696 kB
Unused CSS	13.5 kB	— 13.5 kB – 13.5 kB

Metric

Value

Change / range

Trend

Page Weight

2.65 MB

— 2.65 MB – 2.65 MB

Requests

129

— 129 – 129

Third-party Weight

517 kB

— 517 kB – 517 kB

Third-party CPU

70 ms

— 70 ms – 70 ms

Unused JS

696 kB

— 696 kB – 696 kB

Unused CSS

13.5 kB

— 13.5 kB – 13.5 kB

By resource type

Type	Share	Size	Requests
script	53.4%	1.42 MB	30
image	21.4%	568 kB	11
font	14.1%	373 kB	10
other	6.6%	175 kB	55
document	2.4%	62.6 kB	5
stylesheet	2.2%	57.1 kB	16
Total		2.65 MB	129

Third parties 6 entities

Entity	Transfer	Size	Main thread Simulated
Google Tag Manager	script	192 kB	34 ms
Optanon	scriptother	184 kB	26 ms
Google Fonts	font	127 kB	0 ms
Trust Pilot		8.3 kB	10 ms
browser-intake-datadoghq.com		4.2 kB	0 ms
All 6		517 kB	70 ms

Entity

Transfer

Size

Main thread Simulated

Google Tag Manager

script

192 kB

34 ms

Optanon

scriptother

184 kB

26 ms

Google Fonts

font

127 kB

0 ms

Trust Pilot

8.3 kB

10 ms

browser-intake-datadoghq.com

4.2 kB

0 ms

All 6

517 kB

70 ms

Without JavaScript

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

25.6% of pixels differ — parts of the page change. 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	5.45 s	— 5.45 s – 5.45 s
Long Tasks	18	— 18 – 18
DOM Elements	1,193	— 1,193 – 1,193
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	11	— 11 – 11
A11y Failures	4	— 4 – 4
A11y Failing Nodes	12	— 12 – 12

Metric

Value

Change / range

Trend

Main Thread Work

5.45 s

— 5.45 s – 5.45 s

Long Tasks

— 18 – 18

DOM Elements

1,193

— 1,193 – 1,193

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

— 11 – 11

A11y Failures

— 4 – 4

A11y Failing Nodes

— 12 – 12

Main thread work

Task	Share	Duration Simulated
script evaluation	62%	3.38 s
other	18%	976 ms
script parse compile	8%	460 ms
style layout	6%	342 ms
garbage collection	3%	139 ms
paint composite render	2%	91 ms
parse HTML	1%	57 ms
Total		5.45 s

Task

Time

Duration Simulated

script evaluation

62%

3.38 s

other

18%

976 ms

script parse compile

460 ms

style layout

342 ms

garbage collection

139 ms

paint composite render

91 ms

parse HTML

57 ms

Total

5.45 s

Axe violations axe-core 4.13.0, full rule set

11 violating nodes across 3 rules, 1561 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

serious link-in-text-block — Links must be distinguishable without relying on color 6 nodes
serious color-contrast — Elements must meet minimum color contrast ratio thresholds 4 nodes
moderate heading-order — Heading levels should only increase by one 1 node

Accessibility failures 4 of 31 audits

link-in-text-block — Links rely on color to be distinguishable. 6 nodes
color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 4 nodes
heading-order — Heading elements are not in a sequentially-descending order 1 node
label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 1 node

Best Practices failures 3 of 17 audits

image-aspect-ratio — Displays images with incorrect aspect ratio 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 3 items

SEO failures 2 of 10 audits

link-text — Links do not have descriptive text 1 item
crawlable-anchors — Links are not crawlable 4 items

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	1.45 s	119 ms	0.190	1.24 s	724 ms
2026-09-12	1.45 s	119 ms	0.190	1.24 s	723 ms
2026-09-05	1.46 s	120 ms	0.190	1.24 s	726 ms
2026-08-29	1.50 s	120 ms	0.190	1.24 s	718 ms
2026-08-22	1.55 s	120 ms	0.190	1.23 s	704 ms
2026-08-15	1.59 s	120 ms	0.190	1.22 s	708 ms
2026-08-08	1.62 s	120 ms	0.190	1.22 s	714 ms
2026-08-01	1.62 s	119 ms	0.190	1.22 s	725 ms
2026-07-25	1.59 s	119 ms	0.190	1.21 s	736 ms
2026-07-18	1.58 s	118 ms	0.190	1.21 s	745 ms
2026-07-11	1.57 s	117 ms	0.190	1.20 s	752 ms
2026-07-04	1.57 s	117 ms	0.190	1.21 s	766 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-19

1.45 s

119 ms

0.190

1.24 s

724 ms

2026-09-12

1.45 s

119 ms

0.190

1.24 s

723 ms

2026-09-05

1.46 s

120 ms

0.190

1.24 s

726 ms

2026-08-29

1.50 s

120 ms

0.190

1.24 s

718 ms

2026-08-22

1.55 s

120 ms

0.190

1.23 s

704 ms

2026-08-15

1.59 s

120 ms

0.190

1.22 s

708 ms

2026-08-08

1.62 s

120 ms

0.190

1.22 s

714 ms

2026-08-01

1.62 s

119 ms

0.190

1.22 s

725 ms

2026-07-25

1.59 s

119 ms

0.190

1.21 s

736 ms

2026-07-18

1.58 s

118 ms

0.190

1.21 s

745 ms

2026-07-11

1.57 s

117 ms

0.190

1.20 s

752 ms

2026-07-04

1.57 s

117 ms

0.190

1.21 s

766 ms

Runs

Every stored run for this URL, newest first.

When	Scores	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Sep 21, 2026, 11:19 PM UTC		34	16.34 s	0.099	957 ms	2.65 MB	3/3	±0	2,478 0%	301.5s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

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 6 entities

Without JavaScript

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 4 of 31 audits

Best Practices failures 3 of 17 audits

SEO failures 2 of 10 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