vitepress.dev

https://vitepress.dev/

Ranks Overall #745 Developer Tooling #14 Site Generators #6

Data from Sep 7, 2026, 3:02 PM UTC 44h old Measured every 2 days · 12 runs since Aug 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Wayback Machine

Stack

Built with VitePress 2.0.0

Hosted by Netlify

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-08-09 → 2026-09-05).

LCP 1.56 s good

INP 160 ms good

CLS 0 good

Lighthouse Scores

Performance

no change

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

Without JavaScript

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

0% of pixels differ — they are identical. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Lab metrics Lighthouse, mobile

Metric	Current	Previous	Change	Best	Worst
LCP Largest Contentful Paint	2.45 s	2.41 s	↑ +46 ms (+1.9%)	2.33 s	2.48 s
CLS Cumulative Layout Shift	0	0	→ no change	0	0
TBT Total Blocking Time	22 ms	8 ms	↑ +14 ms (+175%)	5 ms	33 ms
FCP First Contentful Paint	1.51 s	1.51 s	↑ +3 ms (+0.2%)	1.35 s	1.53 s
Speed Index	1.51 s	1.51 s	↑ +3 ms (+0.2%)	1.35 s	1.53 s
TTFB Time to First Byte	609 ms	606 ms	↑ +3 ms (+0.5%)	604 ms	657 ms

Metric

Current

Change

Best

Worst

Trend

LCP Largest Contentful Paint

2.45 s

2.41 s

↑ +46 ms (+1.9%)

2.33 s

2.48 s

CLS Cumulative Layout Shift

→ no change

TBT Total Blocking Time

22 ms

8 ms

↑ +14 ms (+175%)

5 ms

33 ms

FCP First Contentful Paint

1.51 s

↑ +3 ms (+0.2%)

1.35 s

1.53 s

Speed Index

1.51 s

↑ +3 ms (+0.2%)

1.35 s

1.53 s

TTFB Time to First Byte

609 ms

606 ms

↑ +3 ms (+0.5%)

604 ms

657 ms

LCP Subparts lab observed, unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab metrics LCP metric shown above is throttled.

element render delay 67 ms

resource load duration 25 ms

time to first byte 10 ms

resource load delay 10 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-08-09 → 2026-09-05).

Metric	p75	Rating	Distribution (good / needs work / poor)
LCP CWV	1.56 s	good	91.4% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run	160 ms	good	83% good
CLS CWV	0	good	98.8% good
FCP	1.50 s	good	82.2% good
TTFB	736 ms	good	79.1% good

Metric

p75

Rating

Distribution (good / needs work / poor)

LCP CWV

1.56 s

good

91.4% good

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

160 ms

good

83% good

CLS CWV

good

98.8% good

FCP

1.50 s

good

82.2% good

TTFB

736 ms

good

79.1% good

Lab LCP vs Field LCP

Lab 2.45 s

Field p75 1.56 s

The lab LCP is 1.57× the field p75 — real users likely have above-average hardware or network connectivity.

Field history 25 weeks

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

Week ending	LCP	INP	FCP	TTFB
2026-09-05	1.56 s	160 ms	1.50 s	736 ms
2026-08-29	1.51 s	161 ms	1.47 s	639 ms
2026-08-22	1.47 s	176 ms	1.42 s	568 ms
2026-08-15	1.43 s	183 ms	1.37 s	521 ms
2026-08-08	1.44 s	170 ms	1.34 s	503 ms
2026-08-01	1.44 s	167 ms	1.35 s	491 ms
2026-07-25	1.47 s	167 ms	1.38 s	491 ms
2026-07-18	1.44 s	166 ms	1.34 s	511 ms
2026-07-11	1.44 s	164 ms	1.31 s	515 ms
2026-07-04	1.49 s	153 ms	1.30 s	524 ms
2026-06-27	1.42 s	147 ms	1.25 s	512 ms
2026-06-20	1.44 s	159 ms	1.27 s	521 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-05

1.56 s

160 ms

1.50 s

736 ms

2026-08-29

1.51 s

161 ms

1.47 s

639 ms

2026-08-22

1.47 s

176 ms

1.42 s

568 ms

2026-08-15

1.43 s

183 ms

1.37 s

521 ms

2026-08-08

1.44 s

170 ms

1.34 s

503 ms

2026-08-01

1.44 s

167 ms

1.35 s

491 ms

2026-07-25

1.47 s

167 ms

1.38 s

491 ms

2026-07-18

1.44 s

166 ms

1.34 s

511 ms

2026-07-11

1.44 s

164 ms

1.31 s

515 ms

2026-07-04

1.49 s

153 ms

1.30 s

524 ms

2026-06-27

1.42 s

147 ms

1.25 s

512 ms

2026-06-20

1.44 s

159 ms

1.27 s

521 ms

Page weight

Metric	Current	Previous	Change	Best	Worst
Page Weight	212 kB	212 kB	↑ +773 B (+0.4%)	210 kB	212 kB
Requests	23	23	→ no change	23	23
Third-party Weight	3.2 kB	3.2 kB	↑ +2 B (+0.1%)	3.2 kB	3.2 kB
Third-party CPU	2 ms	1 ms	↑ +1 ms (+54.5%) significant	1 ms	2 ms
Unused JS	0 B	0 B	→ no change	0 B	0 B
Unused CSS	20.7 kB	20.6 kB	↑ +132 B (+0.6%)	20.6 kB	20.8 kB

Metric

Current

Change

Best

Worst

Trend

Page Weight

212 kB

↑ +773 B (+0.4%)

210 kB

212 kB

Requests

→ no change

Third-party Weight

3.2 kB

↑ +2 B (+0.1%)

3.2 kB

Third-party CPU

2 ms

1 ms

↑ +1 ms (+54.5%) significant

1 ms

2 ms

Unused JS

0 B

→ no change

0 B

Unused CSS

20.7 kB

20.6 kB

↑ +132 B (+0.6%)

20.6 kB

20.8 kB

By resource type

script font stylesheet

script 39.1% 83.0 kB · 6 req
font 34.2% 72.7 kB · 1 req
stylesheet 18.7% 39.7 kB · 2 req
other 4.8% 10.1 kB · 4 req
image 1.6% 3.5 kB · 3 req
document 1.6% 3.4 kB · 1 req

Third parties 1 entities

3.2 kB transferred, 2 ms on the main thread.

Fathom Analytics script 3.2 kB · 2 ms CPU

Page health

Metric	Current	Previous	Change	Best	Worst
Main Thread Work	538 ms	445 ms	↑ +93 ms (+21%) significant	389 ms	606 ms
Long Tasks	2	1	↑ +1 (+100%)	1	2
DOM Elements	159	159	→ no change	159	204
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	4	4	→ no change	4	4
A11y Failures	2	2	→ no change	2	2
A11y Failing Nodes	2	2	→ no change	2	2

Main thread work

script evaluation 193 ms

other 162 ms

style layout 99 ms

parse HTML 65 ms

paint composite render 16 ms

script parse compile 4 ms

Axe violations axe-core 4.13.0, full rule set

4 violating nodes across 3 rules, 168 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 2 nodes
serious color-contrast — Elements must meet minimum color contrast ratio thresholds 1 node
moderate landmark-one-main — Document should have one main landmark 1 node

Accessibility failures 2 of 22 audits

color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 1 node
landmark-one-main — Document does not have a main landmark. 1 node

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When	Perf	LCP	TBT	Weight	Runs	Spread	Bench	Took	Archive
Sep 7, 2026, 3:02 PM UTC	97	2.45 s	22 ms	212 kB	3/3	±3	2,276 -8%	22.5s	Wayback
Sep 5, 2026, 3:26 AM UTC	97	2.41 s	8 ms	212 kB	3/3	±1	2,993 +21%	21.9s	Wayback
Sep 4, 2026, 1:05 AM UTC	97	2.48 s	11 ms	212 kB	3/3	±2	3,405 +37%	21.6s	Wayback
Sep 2, 2026, 11:11 PM UTC	98	2.38 s	17 ms	211 kB	3/3	±1	2,805 +13%	22.1s	Wayback
Sep 1, 2026, 8:49 PM UTC	97	2.46 s	5 ms	212 kB	3/3	±2	3,619 +46%	21.4s	Wayback
Aug 31, 2026, 6:05 PM UTC	97	2.42 s	21 ms	212 kB	3/3	±2	2,312 -7%	21.9s	Wayback
Aug 26, 2026, 2:00 PM UTC	97	2.43 s	33 ms	212 kB	3/3	±0	2,596 +5%	22.5s	Wayback
Aug 25, 2026, 10:40 AM UTC	98	2.41 s	22 ms	212 kB	3/3	±2	2,365 -5%	22.2s	Wayback
Aug 24, 2026, 9:54 AM UTC	98	2.33 s	31 ms	210 kB	3/3	±3	2,491 0%	26.1s	Wayback
Aug 23, 2026, 9:26 AM UTC	97	2.41 s	31 ms	210 kB	3/3	±7	2,440 -2%	27.9s	Wayback
Aug 22, 2026, 9:25 AM UTC	98	2.33 s	29 ms	210 kB	3/3	±5	2,330 -6%	26.7s	Wayback
Aug 21, 2026, 8:45 AM UTC	98	2.35 s	17 ms	210 kB	3/3	±2	2,861 +15%	23.1s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took