antithesis.com

Ranks Overall #1,081 11ty Emeritus

Data from Sep 17, 2026, 11:28 PM UTC 20d old Measured once a month · 5 runs since Aug 20, 2026

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

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 4,095, 65% faster than this project's median of 2,486. 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 Astro 6.4.0

Uses React

Hosted by Amazon S3

Lighthouse Scores LAB Simulated

Performance

↑ +4 (+6%)

Accessibility

no change

Best Practices

↑ +4 (+5.5%)

SEO

no change

Metrics LAB FIELD

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

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-08-19 → 2026-09-15), url-level.

Metric	Lab Simulated	Field
LCP CWV Largest Contentful Paint	6.32 s poor	↑ +11 ms (+0.2%) 5.86 s – 7.15 s	1.20 s good	94.3% 3.3% 2.3%
INP CWV Interaction to Next Paint — field only, no lab run can measure it	n/a	—	112 ms good	92.7% 6.5% 0.9%
CLS CWV Cumulative Layout Shift	0 good	→ no change 0 – 0	0 good	100% 0% 0%
TBT Total Blocking Time	243 ms needs work	↓ -145 ms (-37.4%) 243 ms – 1.16 s	n/a	—
FCP First Contentful Paint	1.97 s needs work	↑ +236 ms (+13.6%) significant 1.45 s – 1.97 s	1.18 s good	89.5% 6.5% 4%
Speed Index	1.97 s good	↑ +236 ms (+13.6%) significant 1.45 s – 1.97 s	n/a	—
TTFB Time to First Byte	621 ms good	↑ +10 ms (+1.6%) 611 ms – 629 ms	549 ms good	85.6% 11.3% 3.1%

Metric

Lab Simulated

Field

Value

Change / range

Trend

p75

Distribution

LCP CWV Largest Contentful Paint

6.32 s poor

↑ +11 ms (+0.2%) 5.86 s – 7.15 s

1.20 s good

94.3% 3.3% 2.3%

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

n/a

—

112 ms good

92.7% 6.5% 0.9%

CLS CWV Cumulative Layout Shift

0 good

→ no change 0 – 0

0 good

100% 0% 0%

TBT Total Blocking Time

243 ms needs work

↓ -145 ms (-37.4%) 243 ms – 1.16 s

n/a

—

FCP First Contentful Paint

1.97 s needs work

↑ +236 ms (+13.6%) significant 1.45 s – 1.97 s

1.18 s good

89.5% 6.5% 4%

Speed Index

1.97 s good

↑ +236 ms (+13.6%) significant 1.45 s – 1.97 s

n/a

—

TTFB Time to First Byte

621 ms good

↑ +10 ms (+1.6%) 611 ms – 629 ms

549 ms good

85.6% 11.3% 3.1%

LCP Subparts LAB Unthrottled

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

element render delay 63 ms

resource load duration 54 ms

time to first byte 15 ms

resource load delay 12 ms

LCP LAB Simulated vs LCP FIELD

Lab 6.32 s

Field p75 1.20 s

The lab LCP is 5.25× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric	Value	Change / range
Page Weight	1.82 MB	↑ +58.9 kB (+3.4%) 1.64 MB – 2.09 MB
Requests	85	↓ -9 (-9.6%) 81 – 96
Third-party Weight	580 kB	↓ -38.8 kB (-6.4%) 514 kB – 959 kB
Third-party CPU	126 ms	↓ -72 ms (-36.2%) 126 ms – 380 ms
Unused JS	274 kB	↓ -53.6 kB (-16.7%) 273 kB – 389 kB
Unused CSS	0 B	→ no change 0 B – 0 B

Metric

Value

Change / range

Trend

Page Weight

1.82 MB

↑ +58.9 kB (+3.4%) 1.64 MB – 2.09 MB

Requests

↓ -9 (-9.6%) 81 – 96

Third-party Weight

580 kB

↓ -38.8 kB (-6.4%) 514 kB – 959 kB

Third-party CPU

126 ms

↓ -72 ms (-36.2%) 126 ms – 380 ms

Unused JS

274 kB

↓ -53.6 kB (-16.7%) 273 kB – 389 kB

Unused CSS

0 B

→ no change 0 B – 0 B

By resource type

Type	Share	Size	Requests
font	43.9%	783 kB	9
script	42.2%	751 kB	33
document	9.5%	170 kB	2
image	2%	35.9 kB	8
stylesheet	1.5%	27.4 kB	8
other	0.8%	14.2 kB	19
Total		1.82 MB	85

Third parties 8 entities

Entity	Transfer	Size	Main thread Simulated
Google Tag Manager	script	347 kB	81 ms
Usercentrics CMP	script	94.4 kB	8 ms
vector.co	script	68.8 kB	20 ms
default.com		48.1 kB	9 ms
reddit		18.6 kB	8 ms
All 8		580 kB	126 ms

Entity

Transfer

Size

Main thread Simulated

Google Tag Manager

script

347 kB

81 ms

Usercentrics CMP

script

94.4 kB

8 ms

vector.co

script

68.8 kB

20 ms

default.com

48.1 kB

9 ms

18.6 kB

8 ms

All 8

580 kB

126 ms

Page health

Metric	Value	Change / range
Main Thread Work	1.75 s	↓ -522 ms (-23%) 1.75 s – 3.28 s
Long Tasks	6	↓ -6 (-50%) significant 6 – 14
DOM Elements	1,335	↓ -9 (-0.7%) 1,240 – 1,344
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports)	5	→ no change 5 – 16
A11y Failures	1	→ no change 1 – 1
A11y Failing Nodes	3	→ no change 3 – 3

Metric

Value

Change / range

Trend

Main Thread Work

1.75 s

↓ -522 ms (-23%) 1.75 s – 3.28 s

Long Tasks

↓ -6 (-50%) significant 6 – 14

DOM Elements

1,335

↓ -9 (-0.7%) 1,240 – 1,344

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

→ no change 5 – 16

A11y Failures

→ no change 1 – 1

A11y Failing Nodes

→ no change 3 – 3

Main thread work

Task	Share	Duration Simulated
script evaluation	46%	807 ms
other	27%	472 ms
style layout	12%	210 ms
script parse compile	6%	111 ms
garbage collection	4%	66 ms
paint composite render	2%	41 ms
parse HTML	2%	37 ms
Total		1.75 s

Task

Time

Duration Simulated

script evaluation

46%

807 ms

other

27%

472 ms

style layout

12%

210 ms

script parse compile

111 ms

garbage collection

66 ms

paint composite render

41 ms

parse HTML

37 ms

Total

1.75 s

Axe violations axe-core 4.13.0, full rule set

5 violating nodes across 2 rules, 1276 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

serious aria-hidden-focus — ARIA hidden element must not be focusable or contain focusable elements 3 nodes
moderate region — All page content should be contained by landmarks 2 nodes

Accessibility failures 1 of 26 audits

aria-hidden-focus — `[aria-hidden="true"]` elements contain focusable descendents 3 nodes

Best Practices failures 2 of 19 audits

third-party-cookies — Uses third-party cookies 2 items
inspector-issues — Issues were logged in the `Issues` panel in Chrome Devtools 1 item

SEO failures 1 of 10 audits

link-text — Links do not have descriptive text 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	FCP	TTFB
2026-09-26	1.34 s	121 ms	1.22 s	579 ms
2026-09-19	1.27 s	117 ms	1.20 s	564 ms
2026-09-12	1.19 s	114 ms	1.16 s	541 ms
2026-09-05	1.28 s	125 ms	1.23 s	551 ms
2026-08-29	1.33 s	131 ms	1.29 s	590 ms
2026-08-22	1.33 s	140 ms	1.29 s	596 ms
2026-08-15	1.49 s	141 ms	1.41 s	686 ms
2026-08-08	1.60 s	145 ms	1.43 s	719 ms
2026-08-01	1.55 s	143 ms	1.43 s	686 ms
2026-07-25	1.63 s	138 ms	1.36 s	672 ms
2026-07-18	1.80 s	137 ms	1.21 s	558 ms
2026-07-11	2.17 s	131 ms	1.13 s	438 ms

Week ending

LCP

INP

CLS

FCP

TTFB

2026-09-26

1.34 s

121 ms

1.22 s

579 ms

2026-09-19

1.27 s

117 ms

1.20 s

564 ms

2026-09-12

1.19 s

114 ms

1.16 s

541 ms

2026-09-05

1.28 s

125 ms

1.23 s

551 ms

2026-08-29

1.33 s

131 ms

1.29 s

590 ms

2026-08-22

1.33 s

140 ms

1.29 s

596 ms

2026-08-15

1.49 s

141 ms

1.41 s

686 ms

2026-08-08

1.60 s

145 ms

1.43 s

719 ms

2026-08-01

1.55 s

143 ms

1.43 s

686 ms

2026-07-25

1.63 s

138 ms

1.36 s

672 ms

2026-07-18

1.80 s

137 ms

1.21 s

558 ms

2026-07-11

2.17 s

131 ms

1.13 s

438 ms

Runs

Every stored run for this URL, newest first.

When	Perf	LCP	TBT	Weight	Runs	Spread	Bench	Took	Archive
Sep 17, 2026, 11:28 PM UTC	71	6.32 s	243 ms	1.82 MB	3/3	±25	4,095 +65%	38.9s	Wayback
Sep 10, 2026, 9:32 PM UTC	67	6.31 s	388 ms	1.75 MB	3/3	±23	2,274 -9%	48.7s	Wayback
Sep 3, 2026, 7:22 PM UTC	68	7.15 s	319 ms	1.64 MB	3/3	±27	2,493 0%	36.3s	Wayback
Aug 27, 2026, 7:07 PM UTC	69	7.00 s	316 ms	1.64 MB	3/3	±33	2,486 0%	35.4s	Wayback
Aug 20, 2026, 4:27 PM UTC	54	5.86 s	1.16 s	2.09 MB	3/3	±6	2,478 0%	37.6s	Wayback

When

Scores

Perf

LCP

CLS

TBT

Weight

Runs

Spread

Bench

Took

Stack

Lighthouse Scores LAB 🤖 Simulated

Metrics LAB FIELD

LCP Subparts LAB 🐇 Unthrottled

LCP LAB 🤖 Simulated vs LCP FIELD

Page weight

By resource type

Third parties 8 entities

Page health

Main thread work

Axe violations axe-core 4.13.0, full rule set

Accessibility failures 1 of 26 audits

Best Practices failures 2 of 19 audits

SEO failures 1 of 10 audits

Hygiene

Measurement log

Field history 25 weeks

Runs

Lighthouse Scores LAB Simulated

LCP Subparts LAB Unthrottled

LCP LAB Simulated vs LCP FIELD