lit.dev

Data from Aug 21, 2026, 3:10 AM UTC — 15h old.

Built Awesome · 1 measurement · since Aug 21, 2026 · last attempt 15h

Stack

Detected on the same page load as the accessibility pass — the generator from <meta name="generator"> or the shape of the page, the host from response headers.

Go Hosted by Google Frontend

Core Web Vitals field data, url-level

Real Chrome users, 28-day window (2026-07-22 → 2026-08-18). This is what Google measures you on.

LCP 1.93 s good

INP 71 ms good

CLS 0 good

Scores

Performance

no change

100

Accessibility

no change

100

Best Practices

no change

100

SEO

no change

Lab metrics Lighthouse, mobile

Metric	Current	Previous	Change	Best	Worst
LCP Largest Contentful Paint	3.98 s	—	—	3.98 s	3.98 s
CLS Cumulative Layout Shift	0	—	—	0	0
TBT Total Blocking Time	100 ms	—	—	100 ms	100 ms
FCP First Contentful Paint	1.02 s	—	—	1.02 s	1.02 s
Speed Index	1.02 s	—	—	1.02 s	1.02 s
TTFB Time to First Byte	678 ms	—	—	678 ms	678 ms

What LCP is made of

A flat LCP number tells you something regressed. The subparts tell you whether it was the server, resource discovery, the download, or rendering.

element render delay 446 ms

time to first byte 72 ms

Field data Chrome UX Report, url-level

Real Chrome users, 28-day trailing window (2026-07-22 → 2026-08-18). This is what Google measures you on.

Metric	p75	Rating	Distribution (good / needs work / poor)
LCP CWV	1.93 s	good	86.2% good
INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run	71 ms	good	96.9% good
CLS CWV	0	good	99.6% good
FCP	997 ms	good	90.3% good
TTFB	769 ms	good	76% good

Metric

p75

Rating

Distribution (good / needs work / poor)

LCP CWV

1.93 s

good

86.2% good

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

71 ms

good

96.9% good

CLS CWV

good

99.6% good

FCP

997 ms

good

90.3% good

TTFB

769 ms

good

76% good

Lab vs field

Lab LCP 3.98 s · field p75 1.93 s · real users are 0.49× faster than the lab.

Field history 25 weeks

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

Week ending	LCP	INP	FCP	TTFB
2026-08-15	1.93 s	71 ms	994 ms	751 ms
2026-08-08	1.77 s	74 ms	993 ms	752 ms
2026-08-01	1.74 s	74 ms	976 ms	735 ms
2026-07-25	1.85 s	77 ms	1.05 s	788 ms
2026-07-18	1.85 s	78 ms	1.05 s	787 ms
2026-07-11	1.88 s	74 ms	1.04 s	779 ms
2026-07-04	1.91 s	72 ms	1.05 s	802 ms
2026-06-27	1.82 s	70 ms	1.02 s	766 ms
2026-06-20	1.73 s	69 ms	963 ms	738 ms
2026-06-13	1.77 s	71 ms	989 ms	768 ms
2026-06-06	1.80 s	71 ms	1.03 s	775 ms
2026-05-30	1.86 s	69 ms	1.03 s	801 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-08-15

1.93 s

71 ms

994 ms

751 ms

2026-08-08

1.77 s

74 ms

993 ms

752 ms

2026-08-01

1.74 s

74 ms

976 ms

735 ms

2026-07-25

1.85 s

77 ms

1.05 s

788 ms

2026-07-18

1.85 s

78 ms

1.05 s

787 ms

2026-07-11

1.88 s

74 ms

1.04 s

779 ms

2026-07-04

1.91 s

72 ms

1.05 s

802 ms

2026-06-27

1.82 s

70 ms

1.02 s

766 ms

2026-06-20

1.73 s

69 ms

963 ms

738 ms

2026-06-13

1.77 s

71 ms

989 ms

768 ms

2026-06-06

1.80 s

71 ms

1.03 s

775 ms

2026-05-30

1.86 s

69 ms

1.03 s

801 ms

Page weight

Metric	Current	Previous	Change	Best	Worst
Page Weight	512.1 kB	—	—	512.1 kB	512.1 kB
Requests	35	—	—	35	35
Third-party Weight	156.3 kB	—	—	156.3 kB	156.3 kB
Third-party CPU	51 ms	—	—	51 ms	51 ms
Unused JS	69.7 kB	—	—	69.7 kB	69.7 kB
Unused CSS	0 B	—	—	0 B	0 B

By resource type

font 288.5 kB · 8 req

script 196.6 kB · 17 req

document 18.9 kB · 1 req

image 4.7 kB · 5 req

other 3.4 kB · 4 req

third party 156.3 kB · 1 req

Third parties 1 entities

156.3 kB transferred, 51 ms of main thread time. This is the number most likely to regress without anyone on your team shipping anything.

Google Tag Manager 156.3 kB · 51 ms CPU

Page health

Metric	Current	Previous	Change	Best	Worst
Main Thread Work	820 ms	—	—	820 ms	820 ms
Long Tasks	3	—	—	3	3
DOM Elements	904	—	—	904	904
Axe Violations Violating nodes from a full axe run — stricter than Lighthouse's subset	3	—	—	3	3
A11y Failures	1	—	—	1	1
A11y Failing Nodes	1	—	—	1	1

Main thread work

script evaluation 277 ms

other 234 ms

style layout 180 ms

script parse compile 47 ms

paint composite render 44 ms

parse HTML 39 ms

Axe violations axe-core 4.13.0, full rule set

3 violating nodes across 1 rule, 1007 passing. This is a standalone axe run, stricter than the subset Lighthouse folds into its score above — and it is the second tiebreaker in the ranking.

moderate region — All page content should be contained by landmarks 3 nodes

Accessibility failures 1 of 28 audits

Tracked as a count, not just the score — the weighted score is coarse enough that you can ship a broken component and barely move it.

label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 1 node

Hygiene

Changes rarely — which is exactly why a change is worth noticing.

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first. Failures are kept as records — "this site was down on Tuesday" is data too.

When	Perf	LCP	CLS	TBT	Weight	Runs	Spread	Bench	Took
Aug 21, 2026, 3:10 AM UTC	87	3.98 s	0	100 ms	512.1 kB	3/3	±2	2,475	24.4s

When

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Aug 21, 2026, 3:10 AM UTC

3.98 s

100 ms

512.1 kB

3/3

±2

2,475

24.4s

Embed this score

Live below, then the markup that produces it. Drop that on any page to show lit.dev's scores, updated whenever this instance re-measures — more about the component. Don’t forget to bundle the speedlify-score.js component code into your site!

<speedlify-score speedlify-url="https://zachleat.github.io/speedlify2/" url="https://lit.dev/"></speedlify-score>