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https://thenai.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
1
REVIEW
5
PASS
7
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
63
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
76
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

774 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

13.12 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

130 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.008

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

4.90 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

13.55 s

Page Load Progression

506 ms
1.0 s
1.5 s
2.0 s
2.5 s
3.0 s
3.5 s
4.0 s
Checks
15
7 PASS 5 REVIEW 1 FIX
F
Page Weight Budget
Action
17.5 MB transferred, 75 requests
FIX
17.5 MB transferred, 75 requests
Critical::
Page weighs 19.0 MB (17.5 MB transferred)
Warning::
Images are 16.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 16.7 MB
Warning::
JavaScript is 516 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 516 KB
Info::
75 HTTP requests
Info::
Estimated 3.7 g CO2 per page load
17.5 MB / 2.4 MB budget
17.5 MB transferred
75 requests
3.7 g CO2 per page load
Images 16.7 MiB 96%
JavaScript 515.7 KiB 3%
Fonts 116.0 KiB 1%
CSS 91.1 KiB 1%
HTML 65.9 KiB 0%
Other 1.3 KiB 0%
Other 1020 B 0%
Other 545 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

C
Image Optimization
Action
40 images, 0 KB saveable
REVIEW
40 images, 0 KB saveable
Warning::
https://thenai.org/wp-content/uploads/2021/06/NAI_... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://thenai.org/wp-content/uploads/2021/07/NAI_... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
40 images 16.7 MB
0 oversized -0 KB
14 legacy format
2 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
JS Execution Cost
Action
1734ms total JS execution
REVIEW
1734ms total JS execution
Warning::
https://thenai.org/wp-content/themes/nai/public/sc...: 657ms CPU time
Warning::
https://thenai.org/: 320ms CPU time
Info::
Unattributable: 215ms CPU time
Info::
https://thenai.org/cdn-cgi/challenge-platform/scri...: 201ms CPU time
Info::
https://thenai.org/wp-includes/js/jquery/jquery.mi...: 164ms CPU time
Info::
Third-party scripts: 287ms (17% of total)

Main Thread Breakdown

Other 44% Script Evaluation 30% Style & Layout 15% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://thenai.org/wp-content/themes/nai/public/scripts/vendor.js?id=b2d0069dd848877c1afe657ms43ms13ms1st
https://thenai.org/320ms14ms2ms1st
Unattributable215ms18ms0ms3rd
https://thenai.org/cdn-cgi/challenge-platform/scripts/jsd/main.js201ms197ms1ms1st
https://thenai.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1164ms116ms2ms1st
https://thenai.org/wp-content/themes/nai/public/scripts/app.js?id=18eb3207c4c4e2e5278b104ms54ms0ms1st
https://www.googletagmanager.com/gtag/js?id=UA-2473248-171ms46ms23ms3rd
C
JS Bundles
Action
15 scripts, 221 KB unused
REVIEW
15 scripts, 221 KB unused
Warning::
https://thenai.org/wp-content/themes/nai/public/sc...: 73 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=UA-247...: 64 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-SSJY...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://static.addtoany.com/menu/modules/core.ydpp...: 21 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 221 KB
221 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://thenai.org/wp-content/themes/nai/public/scripts/vendor.js?id=b2d0069dd848877c1afe139 KB73 KB (52%)✓1st
https://www.googletagmanager.com/gtag/js?id=UA-2473248-1125 KB64 KB (51%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-SSJYM8RFWF&cx=c&gtm=4e64h1146 KB63 KB (43%)✓3rd
https://static.addtoany.com/menu/modules/core.ydpp7jcu.js26 KB21 KB (82%)✓3rd
https://thenai.org/wp-content/plugins/add-to-any/addtoany.min.js?ver=1.10 KB—✓1st
https://thenai.org/wp-content/plugins/event-tickets/build/js/rsvp.js?ver=dab7c1842d0b66486c7c1 KB—✓1st
https://thenai.org/wp-content/plugins/event-tickets/build/js/ticket-details.js?ver=effdcbb0319e200f2e6a1 KB—✓1st
https://thenai.org/wp-content/plugins/the-events-calendar/common/build/js/user-agent.js?ver=da75d0bdea6dde3898df0 KB—✓1st
https://thenai.org/wp-content/plugins/event-tickets/build/js/rsvp.js?ver=5.27.6.11 KB—✓1st
https://thenai.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.131 KB—✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Page Weight Inventory
Action
75 resources · 17.5 MB · 221 KB savings available
REVIEW
75 resources · 17.5 MB · 221 KB savings available
Warning::
Page weight 16.5 MB over 1MB target
Got: 17.5 MB Expected: ≤ 1 MB
Info::
~221 KB of savings available
Info::
9 third-party resources (2% of weight)
Info::
7 resources over 200KB
75 resources · 17.5 MiB · 9 third-party 16.5 MiB over 1MB target
Image 96% · 16.7 MiB
JavaScript 3% · 515.7 KiB
Font 1% · 116.0 KiB
CSS 1% · 91.1 KiB
Document 0% · 65.9 KiB
Other 0% · 1.8 KiB

~220.5 KiB of savings available

Remove unused JavaScript: 220.5 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
2% third-party, 0 ms blocking
PASS
2% third-party, 0 ms blocking
Info::
Third-party code accounts for 2% of page weight (323.2 KiB of 17.5 MiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
1 fonts (116 KB)
PASS
1 fonts (116 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

116 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 774 ms LCP 13.1 shttps://thenai.org/wp-content/themes/nai/public/fonts/GT-America-Standard-Bold.otfGT-America-Standard-Bol... https://thenai.org/wp-content/themes/nai/public/fonts/GT-America-Standard-Bold.otf — 116.0 KiB — 60 ms — font-display: swap
GT-America-Standard-Bol... otf swap
Size 116 KB
Load time 60 ms
Start 417 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~93 KB and ~186 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
HTTP Caching
max-age=600 (10 minutes)
PASS
max-age=600 (10 minutes)
Info::
Cache-Control header is set
Got: max-age=600, must-revalidate
Info::
Effective TTL: 10 minutes (max-age=600)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=600, must-revalidate

DirectiveValueMeaning
max-age600Cache for 10 minutes
must-revalidate—Must recheck with server after expiry
Effective TTL: 600 seconds
Network Waterfall
75 requests over 1725ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 774 ms LCP 13.1 shttps://thenai.org// https://thenai.org/ — 200 — 65.0 KiB — 334 ms — h2https://thenai.org/wp-includes/css/dashicons.min.css?ver=6.9.4/wp-includes/css/dashicons.min.css?... https://thenai.org/wp-includes/css/dashicons.min.css?ver=6.9.4 — 200 — 34.5 KiB — 44 ms — h2https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/variables-skeleton.css?ver=6.10.3/wp-content/plugins/the-events-cale... https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/variables-skeleton.css?ver=6.10.3 — 200 — 1.1 KiB — 27 ms — h2https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/variables-full.css?ver=6.10.3/wp-content/plugins/the-events-cale... https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/variables-full.css?ver=6.10.3 — 200 — 666 B — 49 ms — h2https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/common-skeleton.css?ver=6.10.3/wp-content/plugins/the-events-cale... https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/common-skeleton.css?ver=6.10.3 — 200 — 2.5 KiB — 49 ms — h2https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/common-full.css?ver=6.10.3/wp-content/plugins/the-events-cale... https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/common-full.css?ver=6.10.3 — 200 — 4.5 KiB — 32 ms — h2https://thenai.org/wp-content/plugins/event-tickets/build/css/tickets.css?ver=5.27.6.1/wp-content/plugins/event-tickets/b... https://thenai.org/wp-content/plugins/event-tickets/build/css/tickets.css?ver=5.27.6.1 — 200 — 4.2 KiB — 49 ms — h2https://thenai.org/wp-content/plugins/event-tickets/build/css/rsvp-v1.css?ver=5.27.6.1/wp-content/plugins/event-tickets/b... https://thenai.org/wp-content/plugins/event-tickets/build/css/rsvp-v1.css?ver=5.27.6.1 — 200 — 3.4 KiB — 52 ms — h2https://thenai.org/wp-content/plugins/event-tickets/build/css/rsvp.css?ver=5.27.6.1/wp-content/plugins/event-tickets/b... https://thenai.org/wp-content/plugins/event-tickets/build/css/rsvp.css?ver=5.27.6.1 — 200 — 3.7 KiB — 27 ms — h2https://thenai.org/wp-content/plugins/add-to-any/addtoany.min.css?ver=1.16/wp-content/plugins/add-to-any/addt... https://thenai.org/wp-content/plugins/add-to-any/addtoany.min.css?ver=1.16 — 200 — 595 B — 38 ms — h2https://use.typekit.net/msr3oye.cssuse.typekit.net/msr3oye.css https://use.typekit.net/msr3oye.css — 200 — 1.0 KiB — 22 ms — h2https://thenai.org/wp-includes/css/dist/block-library/style.min.css/wp-includes/css/dist/block-library... https://thenai.org/wp-includes/css/dist/block-library/style.min.css — 200 — 15.9 KiB — 40 ms — h2https://thenai.org/wp-content/themes/nai/public/styles/app.css?id=eaaba00d79f6bd14d245/wp-content/themes/nai/public/style... https://thenai.org/wp-content/themes/nai/public/styles/app.css?id=eaaba00d79f6bd14d245 — 200 — 19.0 KiB — 35 ms — h2https://thenai.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1/wp-includes/js/jquery/jquery.min.j... https://thenai.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 — 200 — 30.9 KiB — 52 ms — h2https://thenai.org/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1/wp-includes/js/jquery/jquery-migra... https://thenai.org/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1 — 200 — 5.0 KiB — 52 ms — h2https://thenai.org/wp-content/uploads/2021/06/NAI_logo.png/wp-content/uploads/2021/06/NAI_log... https://thenai.org/wp-content/uploads/2021/06/NAI_logo.png — 200 — 5.6 KiB — 45 ms — h2https://thenai.org/wp-content/uploads/2021/07/karim-ben-van-F2reN77g_gg-unsplash-min-scaled-e1627589725709.jpg/wp-content/uploads/2021/07/karim-b... https://thenai.org/wp-content/uploads/2021/07/karim-ben-van-F2reN77g_gg-unsplash-min-scaled-e1627589725709.jpg — 200 — 148.0 KiB — 54 ms — h2https://p.typekit.net/p.css?s=1&k=msr3oye&ht=tk&f=139.173.175.176.25136&a=18940737&app=typekit&e=cssp.typekit.net/p.css?s=1&k=msr3oye&h... https://p.typekit.net/p.css?s=1&k=msr3oye&ht=tk&f=139.173.175.176.25136&a=18940737&app=typekit&e=css — 200 — 172 B — 28 ms — h2https://thenai.org/wp-content/uploads/2021/07/photo-1596079890701-dd42edf0b7d4-2-scaled.jpg/wp-content/uploads/2021/07/photo-1... https://thenai.org/wp-content/uploads/2021/07/photo-1596079890701-dd42edf0b7d4-2-scaled.jpg — 200 — 72.3 KiB — 29 ms — h3https://thenai.org/wp-content/uploads/2025/01/NAI-Framework-Banner_Website-2025-2-e1736802318271.png/wp-content/uploads/2025/01/NAI-Fra... https://thenai.org/wp-content/uploads/2025/01/NAI-Framework-Banner_Website-2025-2-e1736802318271.png — 200 — 1020.8 KiB — 75 ms — h3https://static.addtoany.com/menu/page.jsstatic.addtoany.com/menu/page.js https://static.addtoany.com/menu/page.js — 200 — 2.2 KiB — 49 ms — h3https://thenai.org/wp-content/plugins/add-to-any/addtoany.min.js?ver=1.1/wp-content/plugins/add-to-any/addt... https://thenai.org/wp-content/plugins/add-to-any/addtoany.min.js?ver=1.1 — 200 — 312 B — 22 ms — h3https://www.googletagmanager.com/gtag/js?id=UA-2473248-1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=UA-2473248-1 — 200 — 125.3 KiB — 155 ms — h2https://thenai.org/wp-content/uploads/2021/07/photo-1540575467063-178a50c2df87-1-1.jpg/wp-content/uploads/2021/07/photo-1... https://thenai.org/wp-content/uploads/2021/07/photo-1540575467063-178a50c2df87-1-1.jpg — 200 — 208.9 KiB — 30 ms — h3https://thenai.org/wp-content/uploads/2025/12/NAI-Summit-2026_Website.png/wp-content/uploads/2025/12/NAI-Sum... https://thenai.org/wp-content/uploads/2025/12/NAI-Summit-2026_Website.png — 200 — 708.2 KiB — 211 ms — h3https://thenai.org/wp-content/uploads/2026/02/Website-Carousel_Health-Factor-Analysis_Feb-2026.gif/wp-content/uploads/2026/02/Website... https://thenai.org/wp-content/uploads/2026/02/Website-Carousel_Health-Factor-Analysis_Feb-2026.gif — 200 — 10.1 MiB — 587 ms — h3https://thenai.org/wp-content/uploads/2025/03/Benefits-of-Tailored-Ad_Front-Page-2.png/wp-content/uploads/2025/03/Benefit... https://thenai.org/wp-content/uploads/2025/03/Benefits-of-Tailored-Ad_Front-Page-2.png — 200 — 89.9 KiB — 139 ms — h3https://thenai.org/wp-content/uploads/2021/07/nai_square-e1631130910890.png/wp-content/uploads/2021/07/nai_squ... https://thenai.org/wp-content/uploads/2021/07/nai_square-e1631130910890.png — 200 — 5.0 KiB — 55 ms — h3https://thenai.org/wp-content/uploads/2025/10/Screenshot-2025-10-06-at-4.47.49-PM.png/wp-content/uploads/2025/10/Screens... https://thenai.org/wp-content/uploads/2025/10/Screenshot-2025-10-06-at-4.47.49-PM.png — 200 — 22.9 KiB — 155 ms — h3https://thenai.org/wp-content/uploads/2026/02/Screenshot-2026-02-17-at-1.30.40-PM.png/wp-content/uploads/2026/02/Screens... https://thenai.org/wp-content/uploads/2026/02/Screenshot-2026-02-17-at-1.30.40-PM.png — 200 — 51.4 KiB — 561 ms — h3
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 774 ms LCP 13.1 shttps://thenai.org// https://thenai.org/ — 200 — 65.0 KiB — 334 ms — h2https://thenai.org/wp-includes/css/dashicons.min.css?ver=6.9.4/wp-includes/css/dashicons.min.css?... https://thenai.org/wp-includes/css/dashicons.min.css?ver=6.9.4 — 200 — 34.5 KiB — 44 ms — h2https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/variables-skeleton.css?ver=6.10.3/wp-content/plugins/the-events-cale... https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/variables-skeleton.css?ver=6.10.3 — 200 — 1.1 KiB — 27 ms — h2https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/variables-full.css?ver=6.10.3/wp-content/plugins/the-events-cale... https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/variables-full.css?ver=6.10.3 — 200 — 666 B — 49 ms — h2https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/common-skeleton.css?ver=6.10.3/wp-content/plugins/the-events-cale... https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/common-skeleton.css?ver=6.10.3 — 200 — 2.5 KiB — 49 ms — h2https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/common-full.css?ver=6.10.3/wp-content/plugins/the-events-cale... https://thenai.org/wp-content/plugins/the-events-calendar/common/build/css/common-full.css?ver=6.10.3 — 200 — 4.5 KiB — 32 ms — h2https://thenai.org/wp-content/plugins/event-tickets/build/css/tickets.css?ver=5.27.6.1/wp-content/plugins/event-tickets/b... https://thenai.org/wp-content/plugins/event-tickets/build/css/tickets.css?ver=5.27.6.1 — 200 — 4.2 KiB — 49 ms — h2https://thenai.org/wp-content/plugins/event-tickets/build/css/rsvp-v1.css?ver=5.27.6.1/wp-content/plugins/event-tickets/b... 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
17% of JavaScript execution is third-party
First-party Third-party 287ms · 125KB · $4/mo
Unattributable
Other
Costly
Execution 215ms
Transfer 0 KB
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Optional
Execution 71ms
Transfer 125 KB
Unused 51%
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 215ms and costs ~$3/month

Unattributable takes 215ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

51% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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