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https://internetsociety.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

86

GRADE

B

FIX

2

REVIEW

4

PASS

7

INFO

2

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

86

Performance

100

Accessibility

100

Best Practices

100

SEO

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

1.12 s

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

1.99 s

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

0 ms

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

0.022

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

1.80 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.

2.00 s

Page Load Progression

375 ms

750 ms

1.1 s

1.5 s

1.9 s

2.2 s

2.6 s

3.0 s

Checks

15

7 PASS 4 REVIEW 2 FIX

D

Third-Party Impact

Action

100% third-party, 0 ms blocking

FIX

100% third-party, 0 ms blocking

Third-party code accounts for 100% of page weight (1.3 MiB of 1.3 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

D

HTTP Caching

Action

no-store (uncacheable)

FIX

no-store (uncacheable)

Cache-Control: no-store prevents all caching

Intentional for dynamic content, but increases server load for every page view.

Got: no-cache, must-revalidate, max-age=0, no-store, private

No ETag or Last-Modified header

Conditional requests (304 Not Modified) are not possible without validators.

Cache-Control

no-cache, must-revalidate, max-age=0, no-store, private

Directive	Value	Meaning
no-cache	—	Cache but always revalidate first
must-revalidate	—	Must recheck with server after expiry
max-age	0	Cache for 0 seconds
no-store	—	Never cache this response
private	—	Only browser cache, not CDN/proxy

B

Page Weight Budget

1.3 MB transferred, 62 requests

REVIEW

1.3 MB transferred, 62 requests

Page weighs 3.2 MB (1.3 MB transferred)

62 HTTP requests

Estimated 0.27 g CO2 per page load

1.3 MB transferred

62 requests

0.27 g CO2 per page load

Images 574.4 KiB 44%

JavaScript 425.2 KiB 33%

CSS 137.4 KiB 11%

Fonts 110.5 KiB 8%

HTML 44.2 KiB 3%

Other 12.0 KiB 1%

Other 1.9 KiB 0%

Other 260 B 0%

Other 237 B 0%

0 2.4 MB 4.9 MB

Under budget

B

Image Optimization

12 images, 0 KB saveable

REVIEW

12 images, 0 KB saveable

All images are well-optimized

12 images 574 KB

0 oversized -0 KB

10 legacy format

0 missing dimensions CLS risk

B

JS Bundles

24 scripts, 134 KB unused

REVIEW

24 scripts, 134 KB unused

https://www.googletagmanager.com/gtm.js?id=GTM-5LK...: 64 KB unused (46%)

Consider code splitting or tree shaking to reduce unused code.

https://www.internetsociety.org/wp-content/plugins...: 37 KB unused (82%)

Consider code splitting or tree shaking to reduce unused code.

https://www.internetsociety.org/wp-content/themes/...: 32 KB unused (83%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 134 KB

134 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtm.js?id=GTM-5LKZWMW	138 KB	64 KB (46%)	✓	3rd
https://www.internetsociety.org/wp-content/plugins/pt-content-views-pro/public/assets/js/cvpro.min.js?ver=7.2.2	46 KB	37 KB (82%)	✓	3rd
https://www.internetsociety.org/wp-content/themes/isoc/dist/js/main.js	39 KB	32 KB (83%)	✓	3rd
https://www.internetsociety.org/wp-includes/js/dist/i18n.min.js?ver=c26c3dc7bed366793375	3 KB	—	✓	3rd
https://www.internetsociety.org/wp-content/plugins/gravityforms/assets/js/dist/utils.min.js?ver=3f278756f0a3032bed328ff6a9f6c01d	17 KB	—	✓	3rd
https://www.internetsociety.org/wp-includes/js/dist/hooks.min.js?ver=dd5603f07f9220ed27f1	2 KB	—	✓	3rd
https://www.internetsociety.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	30 KB	—	✓	3rd
https://www.internetsociety.org/wp-includes/js/dist/a11y.min.js?ver=cb460b4676c94bd228ed	1 KB	—	✓	3rd
https://www.internetsociety.org/wp-content/plugins/content-views-query-and-display-post-page/public/assets/js/cv.js?ver=4.2.1	7 KB	—	✓	3rd
https://www.internetsociety.org/wp-content/plugins/blocks-animation/build/animation/frontend.js?ver=c44084e33dc17a73066a	2 KB	—	✓	3rd

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

62 resources · 1.3 MB · 134 KB savings available

REVIEW

62 resources · 1.3 MB · 134 KB savings available

Page weight 282 KB over 1MB target

Got: 1.3 MB Expected: ≤ 1 MB

~134 KB of savings available

61 third-party resources (100% of weight)

62 resources · 1.3 MiB · 61 third-party 282.1 KiB over 1MB target

Image 44% · 575.8 KiB

JavaScript 33% · 425.2 KiB

CSS 11% · 137.4 KiB

Font 8% · 110.5 KiB

Document 3% · 44.7 KiB

Other 1% · 12.5 KiB

~133.5 KiB of savings available

Remove unused JavaScript: 133.5 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

62 resources			1.3 MiB

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are compressed

All text resources are properly compressed.

A+

JS Execution Cost

489ms total JS execution

PASS

489ms total JS execution

https://www.internetsociety.org/: 218ms CPU time

https://js.hs-analytics.net/analytics/177689850000...: 127ms CPU time

Unattributable: 79ms CPU time

https://www.googletagmanager.com/gtm.js?id=GTM-5LK...: 65ms CPU time

Third-party scripts: 489ms (100% of total)

Main Thread Breakdown

Script Evaluation 39% Style & Layout 29% Other 18% Parse HTML & CSS 6% Script Parsing & Compilation 5%

Script	Total	Scripting	Parse/Compile	Party
https://www.internetsociety.org/	218ms	5ms	2ms	3rd
https://js.hs-analytics.net/analytics/1776898500000/19812339.js	127ms	95ms	2ms	3rd
Unattributable	79ms	3ms	0ms	3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5LKZWMW	65ms	52ms	12ms	3rd

A+

Font Loading

5 fonts (110 KB)

PASS

5 fonts (110 KB)

5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

110 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

5aU19_a8oxmIfJpbERySjRh... woff2 swap

Size 9 KB

Load time 31 ms

Start 1.7 s

Risk FOUT — text flashes from fallback to web font

5aU19_a8oxmIfMJaERySjRh... woff2 swap

Size 8 KB

Load time 32 ms

Start 1.7 s

Risk FOUT — text flashes from fallback to web font

5aU69_a8oxmIdGl4BDGwgDI... woff2 swap

Size 9 KB

Load time 36 ms

Start 1.7 s

Risk FOUT — text flashes from fallback to web font

5aU19_a8oxmIfLZcERySjRh... woff2 swap

Size 9 KB

Load time 33 ms

Start 1.7 s

Risk FOUT — text flashes from fallback to web font

fontawesome-webfont.woff2 woff2 swap

Size 76 KB

Load time 78 ms

Start 1.8 s

Risk FOUT — text flashes from fallback to web font

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)

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

No optimization needed

PASS

No optimization needed

No resource hint issues

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall

62 requests over 2336ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

100% of JavaScript execution is third-party

First-party Third-party 489ms · 225KB · €8/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
www.internetsociety.org www.internetsociety.org	Other	218ms	44 KB	—	€3/mo	Costly
HubSpot Analytics js.hs-analytics.net	Analytics	127ms	42 KB	—	€2/mo	Optional
Unattributable Unattributable	Other	79ms	0 KB	—	€1/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	65ms	138 KB	46%	€1/mo	Optional

www.internetsociety.org

Other

Costly

Execution 218ms

Transfer 44 KB

Monthly Cost €3/mo

HubSpot Analytics

Analytics

Optional

Execution 127ms

Transfer 42 KB

Monthly Cost €2/mo

Unattributable

Other

Optional

Execution 79ms

Transfer 0 KB

Monthly Cost €1/mo

Google Tag Manager

Tag Manager

Optional

Execution 65ms

Transfer 138 KB

Unused 46%

Monthly Cost €1/mo

These scripts may cost more than they're worth

www.internetsociety.org adds 218ms and costs ~€3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.internetsociety.org takes 218ms 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

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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