yarnpkg.com

Ranks Overall #1,622 Developer Tooling #66 Package Managers #12

Data from Oct 8, 2026, 11:24 PM UTC 47h old Measured every 2 days · 22 runs since Aug 25, 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 Docusaurus 3.7.0

Uses React

Hosted by Netlify

Filmstrip LAB Throttled

How the page drew during the measured load, at 9 points across 17.06 s. Compare this filmstrip against another site.

1.65 s
4.26 s
6.40 s
7.75 s
8.53 s
10.66 s
12.79 s
14.93 s
17.06 s

Lighthouse Scores LAB Simulated

Performance

↑ +26 (+59.1%)

Accessibility

no change

100

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 (2026-09-09 → 2026-10-06), url-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	8.61 s poor	↓ -1297 ms (-13.1%) 5.89 s – 10.69 s	2.01 s good	84.2% 11% 4.8%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	206 ms needs work	73.8% 21.7% 4.5%
CLS CWV Cumulative Layout Shift	0.002 good	↑ +0.002 0 – 0.002	0 good	92.1% 5.4% 2.5%
TBT Total Blocking Time	232 ms needs work	↓ -497 ms (-68.2%) significant 123 ms – 729 ms	n/a	—
FCP First Contentful Paint	1.36 s good	↓ -3774 ms (-73.4%) significant 1.10 s – 5.14 s	1.71 s good	78% 14.2% 7.7%
Speed Index	2.81 s good	↓ -2328 ms (-45.3%) significant 2.81 s – 6.40 s	n/a	—
TTFB Time to First Byte	615 ms good	↓ -45 ms (-6.8%) significant 615 ms – 737 ms	816 ms needs work	73.7% 19.2% 7.1%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

8.61 s poor

↓ -1297 ms (-13.1%) 5.89 s – 10.69 s

2.01 s good

84.2% 11% 4.8%

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

n/a

—

206 ms needs work

73.8% 21.7% 4.5%

CLS CWV Cumulative Layout Shift

0.002 good

↑ +0.002 0 – 0.002

0 good

92.1% 5.4% 2.5%

TBT Total Blocking Time

232 ms needs work

↓ -497 ms (-68.2%) significant 123 ms – 729 ms

n/a

—

FCP First Contentful Paint

1.36 s good

↓ -3774 ms (-73.4%) significant 1.10 s – 5.14 s

1.71 s good

78% 14.2% 7.7%

Speed Index

2.81 s good

↓ -2328 ms (-45.3%) significant 2.81 s – 6.40 s

n/a

—

TTFB Time to First Byte

615 ms good

↓ -45 ms (-6.8%) significant 615 ms – 737 ms

816 ms needs work

73.7% 19.2% 7.1%

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 6.10 s

resource load delay 1.04 s

time to first byte 576 ms

element render delay 33 ms

LCP LAB Simulated vs LCP FIELD

Lab 8.61 s

Field p75 2.01 s

The lab LCP is 4.29× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	1.70 MB	↓ -574 B 1.70 MB – 1.70 MB
Requests	32	↓ -2 (-5.9%) significant 32 – 35
Third-party Weight	55.0 kB	↓ -581 B (-1%) 54.7 kB – 58.2 kB
Third-party CPU	34 ms	↓ -78 ms (-69.6%) significant 22 ms – 112 ms
Unused JS	290 kB	↑ +28.3 kB (+11.1%) significant 261 kB – 292 kB
Unused CSS	49.9 kB	↑ +169 B (+0.3%) 49.8 kB – 50.3 kB

Metric

Value

Change / range

Trend

Page Weight

1.70 MB

↓ -574 B 1.70 MB – 1.70 MB

Requests

↓ -2 (-5.9%) significant 32 – 35

Third-party Weight

55.0 kB

↓ -581 B (-1%) 54.7 kB – 58.2 kB

Third-party CPU

34 ms

↓ -78 ms (-69.6%) significant 22 ms – 112 ms

Unused JS

290 kB

↑ +28.3 kB (+11.1%) significant 261 kB – 292 kB

Unused CSS

49.9 kB

↑ +169 B (+0.3%) 49.8 kB – 50.3 kB

By resource type

Type	Share	Size	Requests
image	56.9%	966 kB	10
script	35.8%	607 kB	7
stylesheet	3.4%	58.0 kB	1
font	2.7%	45.5 kB	1
other	0.7%	12.7 kB	10
document	0.4%	7.0 kB	1
Total		1.70 MB	32

Third parties 3 entities

Entity	Transfer	Size	Main thread Simulated
datadoghq-browser-agent.com	script	49.4 kB	34 ms
GitHub		5.5 kB	0 ms
browser-intake-datadoghq.eu		136 B	0 ms
Total		55.0 kB	34 ms

Entity

Transfer

Size

Main thread Simulated

datadoghq-browser-agent.com

script

49.4 kB

34 ms

GitHub

5.5 kB

0 ms

browser-intake-datadoghq.eu

136 B

0 ms

Total

55.0 kB

34 ms

Without JavaScript

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

0.6% of pixels differ — they are nearly identical. 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	4.17 s	↓ -1642 ms (-28.3%) significant 3.59 s – 6.69 s
Long Tasks	5	↓ -4 (-44.4%) significant 4 – 9
DOM Elements	163	→ no change 163 – 163
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	7	→ no change 7 – 7
A11y Failures	2	→ no change 2 – 2
A11y Failing Nodes	7	→ no change 7 – 7

Metric

Value

Change / range

Trend

Main Thread Work

4.17 s

↓ -1642 ms (-28.3%) significant 3.59 s – 6.69 s

Long Tasks

↓ -4 (-44.4%) significant 4 – 9

DOM Elements

163

→ no change 163 – 163

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

→ no change 7 – 7

A11y Failures

→ no change 2 – 2

A11y Failing Nodes

→ no change 7 – 7

Main thread work

Task	Share	Duration Simulated
other	68%	2.83 s
script evaluation	21%	871 ms
script parse compile	7%	300 ms
style layout	2%	79 ms
paint composite render	1%	43 ms
garbage collection	1%	23 ms
parse HTML	0%	20 ms
Total		4.17 s

Task

Time

Duration Simulated

other

68%

2.83 s

script evaluation

21%

871 ms

script parse compile

300 ms

style layout

79 ms

paint composite render

43 ms

garbage collection

23 ms

parse HTML

20 ms

Total

4.17 s

Axe violations axe-core 4.13.0, full rule set

7 violating nodes across 2 rules, 174 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

critical image-alt — Images must have alternative text 6 nodes

Offending elements (5 of 6)

img[src$="icon-workspaces.png"]

<img class="icon_cRwW" width="200" height="180" src="/img/icon-workspaces.png">

img[src$="icon-stability.png"]

<img class="icon_cRwW" width="200" height="180" src="/img/icon-stability.png">

img[src$="icon-documentation.png"]

<img class="icon_cRwW" width="200" height="180" src="/img/icon-documentation.png">

img[src$="icon-plugins.png"]

<img class="icon_cRwW" width="200" height="180" src="/img/icon-plugins.png">

img[src$="icon-innovation.png"]

<img class="icon_cRwW" width="200" height="180" src="/img/icon-innovation.png">

moderate heading-order — Heading levels should only increase by one 1 node
Offending element
1. .col.col--4.feature_CLW0:nth-child(1) > .padding-horiz--md.text--center > h3
```
<h3>Workspaces</h3>
```

Accessibility failures 2 of 24 audits

image-alt — Image elements do not have `[alt]` attributes 6 nodes
heading-order — Heading elements are not in a sequentially-descending order 1 node

Best Practices failures 1 of 19 audits

valid-source-maps — Missing source maps for large first-party JavaScript 2 items

SEO failures 1 of 9 audits

image-alt — Image elements do not have `[alt]` attributes 6 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	FCP	TTFB
2026-10-03	1.93 s	208 ms	1.64 s	799 ms
2026-09-26	1.89 s	202 ms	1.58 s	767 ms
2026-09-19	1.86 s	207 ms	1.56 s	734 ms
2026-09-12	1.87 s	213 ms	1.58 s	743 ms
2026-09-05	1.98 s	218 ms	1.65 s	754 ms
2026-08-29	1.96 s	218 ms	1.66 s	778 ms
2026-08-22	1.96 s	211 ms	1.67 s	777 ms
2026-08-15	2.04 s	223 ms	1.74 s	786 ms
2026-08-08	1.96 s	233 ms	1.69 s	780 ms
2026-08-01	1.97 s	235 ms	1.70 s	788 ms
2026-07-25	2.00 s	242 ms	1.69 s	824 ms
2026-07-18	1.89 s	220 ms	1.64 s	813 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-10-03

1.93 s

208 ms

1.64 s

799 ms

2026-09-26

1.89 s

202 ms

1.58 s

767 ms

2026-09-19

1.86 s

207 ms

1.56 s

734 ms

2026-09-12

1.87 s

213 ms

1.58 s

743 ms

2026-09-05

1.98 s

218 ms

1.65 s

754 ms

2026-08-29

1.96 s

218 ms

1.66 s

778 ms

2026-08-22

1.96 s

211 ms

1.67 s

777 ms

2026-08-15

2.04 s

223 ms

1.74 s

786 ms

2026-08-08

1.96 s

233 ms

1.69 s

780 ms

2026-08-01

1.97 s

235 ms

1.70 s

788 ms

2026-07-25

2.00 s

242 ms

1.69 s

824 ms

2026-07-18

1.89 s

220 ms

1.64 s

813 ms

Runs

Every stored run for this URL, newest first.

When	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took	Archive
Oct 8, 2026, 11:24 PM UTC	70	8.61 s	0.002	232 ms	1.70 MB	3/3	±4	2,486 0%	62.4s	Wayback
Oct 6, 2026, 7:16 PM UTC	44	9.90 s	0	729 ms	1.70 MB	1/3	—	1,837 -26%	57s	Wayback
Oct 3, 2026, 8:49 PM UTC	70	8.64 s	0.002	244 ms	1.70 MB	3/3	±3	2,694 +8%	62.8s	Wayback
Oct 1, 2026, 12:22 AM UTC	67	8.68 s	0.002	255 ms	1.70 MB	3/3	±24	2,274 -9%	75s	Wayback
Sep 29, 2026, 12:04 AM UTC	70	6.69 s	0.002	284 ms	1.70 MB	3/3	±19	2,501 +1%	69.2s	Wayback
Sep 25, 2026, 4:39 PM UTC	62	9.90 s	0.002	431 ms	1.70 MB	3/3	±3	2,494 0%	61.9s	Wayback
Sep 23, 2026, 3:18 PM UTC	70	8.58 s	0.002	169 ms	1.70 MB	3/3	±21	3,282 +32%	60.4s	Wayback
Sep 21, 2026, 3:01 PM UTC	71	8.53 s	0.002	123 ms	1.70 MB	3/3	±5	3,607 +45%	57.6s	Wayback
Sep 19, 2026, 8:33 AM UTC	68	8.62 s	0.002	227 ms	1.70 MB	3/3	±12	2,507 +1%	63.4s	Wayback
Sep 16, 2026, 7:01 PM UTC	66	8.73 s	0.002	361 ms	1.70 MB	3/3	±4	2,069 -17%	71s	Wayback
Sep 14, 2026, 6:12 PM UTC	71	6.76 s	0.002	249 ms	1.70 MB	3/3	±12	2,565 +3%	68.6s	Wayback
Sep 12, 2026, 3:09 PM UTC	68	8.62 s	0.002	280 ms	1.70 MB	3/3	±13	2,546 +2%	64.8s	Wayback
Sep 10, 2026, 10:43 AM UTC	63	10.03 s	0.002	457 ms	1.70 MB	3/3	±12	2,434 -2%	30s	Wayback
Sep 8, 2026, 5:40 AM UTC	61	10.69 s	0	368 ms	1.70 MB	3/3	±17	2,366 -5%	33s	Wayback
Sep 6, 2026, 12:58 AM UTC	71	6.46 s	0.002	238 ms	1.70 MB	3/3	±15	3,289 +32%	30.4s	Wayback
Sep 4, 2026, 9:24 PM UTC	66	5.89 s	0.002	371 ms	1.70 MB	3/3	±11	2,532 +2%	30.9s	Wayback
Sep 3, 2026, 7:26 PM UTC	68	8.72 s	0.002	254 ms	1.70 MB	3/3	±10	2,487 0%	32.6s	Wayback
Sep 2, 2026, 5:38 PM UTC	59	10.63 s	0	210 ms	1.70 MB	3/3	±24	2,657 +7%	38.4s	Wayback
Sep 1, 2026, 1:16 PM UTC	67	8.70 s	0.002	259 ms	1.70 MB	3/3	±8	2,357 -5%	30.1s	Wayback
Aug 31, 2026, 10:49 AM UTC	67	8.66 s	0.002	265 ms	1.70 MB	3/3	±5	2,359 -5%	31.2s	Wayback
Aug 26, 2026, 7:05 PM UTC	64	9.94 s	0.002	403 ms	1.70 MB	3/3	±22	2,425 -3%	30.5s	Wayback
Aug 25, 2026, 4:38 PM UTC	68	8.71 s	0.002	294 ms	1.70 MB	3/3	±11	2,325 -7%	30.3s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Archive

Oct 8, 2026, 11:24 PM UTC

8.61 s

0.002

232 ms

1.70 MB

3/3

±4

2,486 0%

62.4s

Wayback

Oct 6, 2026, 7:16 PM UTC

9.90 s

729 ms

1.70 MB

1/3

—

1,837 -26%

57s

Wayback

Oct 3, 2026, 8:49 PM UTC

8.64 s

0.002

244 ms

1.70 MB

3/3

±3

2,694 +8%

62.8s

Wayback

Oct 1, 2026, 12:22 AM UTC

8.68 s

0.002

255 ms

1.70 MB

3/3

±24

2,274 -9%

75s

Wayback

Sep 29, 2026, 12:04 AM UTC

6.69 s

0.002

284 ms

1.70 MB

3/3

±19

2,501 +1%

69.2s

Wayback

Sep 25, 2026, 4:39 PM UTC

9.90 s

0.002

431 ms

1.70 MB

3/3

±3

2,494 0%

61.9s

Wayback

Sep 23, 2026, 3:18 PM UTC

8.58 s

0.002

169 ms

1.70 MB

3/3

±21

3,282 +32%

60.4s

Wayback

Sep 21, 2026, 3:01 PM UTC

8.53 s

0.002

123 ms

1.70 MB

3/3

±5

3,607 +45%

57.6s

Wayback

Sep 19, 2026, 8:33 AM UTC

8.62 s

0.002

227 ms

1.70 MB

3/3

±12

2,507 +1%

63.4s

Wayback

Sep 16, 2026, 7:01 PM UTC

8.73 s

0.002

361 ms

1.70 MB

3/3

±4

2,069 -17%

71s

Wayback

Sep 14, 2026, 6:12 PM UTC

6.76 s

0.002

249 ms

1.70 MB

3/3

±12

2,565 +3%

68.6s

Wayback

Sep 12, 2026, 3:09 PM UTC

8.62 s

0.002

280 ms

1.70 MB

3/3

±13

2,546 +2%

64.8s

Wayback

Sep 10, 2026, 10:43 AM UTC

10.03 s

0.002

457 ms

1.70 MB

3/3

±12

2,434 -2%

30s

Wayback

Sep 8, 2026, 5:40 AM UTC

10.69 s

368 ms

1.70 MB

3/3

±17

2,366 -5%

33s

Wayback

Sep 6, 2026, 12:58 AM UTC

6.46 s

0.002

238 ms

1.70 MB

3/3

±15

3,289 +32%

30.4s

Wayback

Sep 4, 2026, 9:24 PM UTC

5.89 s

0.002

371 ms

1.70 MB

3/3

±11

2,532 +2%

30.9s

Wayback

Sep 3, 2026, 7:26 PM UTC

8.72 s

0.002

254 ms

1.70 MB

3/3

±10

2,487 0%

32.6s

Wayback

Sep 2, 2026, 5:38 PM UTC

10.63 s

210 ms

1.70 MB

3/3

±24

2,657 +7%

38.4s

Wayback

Sep 1, 2026, 1:16 PM UTC

8.70 s

0.002

259 ms

1.70 MB

3/3

±8

2,357 -5%

30.1s

Wayback

Aug 31, 2026, 10:49 AM UTC

8.66 s

0.002

265 ms

1.70 MB

3/3

±5

2,359 -5%

31.2s

Wayback

Aug 26, 2026, 7:05 PM UTC

9.94 s

0.002

403 ms

1.70 MB

3/3

±22

2,425 -3%

30.5s

Wayback

Aug 25, 2026, 4:38 PM UTC

8.71 s

0.002

294 ms

1.70 MB

3/3

±11

2,325 -7%

30.3s

Wayback

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 3 entities

Without JavaScript

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 2 of 24 audits

Best Practices failures 1 of 19 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