Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.93 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.53 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
155 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.020
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.20 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.
8.19 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2007ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.internetsociety.org/ | 681ms | 14ms | 9ms | 3rd |
| https://js.hs-analytics.net/analytics/1776898500000/19812339.js | 480ms | 369ms | 13ms | 3rd |
| Unattributable | 301ms | 14ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5LKZWMW | 187ms | 150ms | 36ms | 3rd |
| https://www.internetsociety.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 | 155ms | 123ms | 7ms | 3rd |
| https://cdn-cookieyes.com/client_data/1f2143510cebd71eeac1117c/banner.js | 102ms | 52ms | 3ms | 3rd |
| https://www.internetsociety.org/wp-content/plugins/pt-content-views-pro/public/assets/js/cvpro.min.js?ver=7.2.2 | 101ms | 23ms | 12ms | 3rd |
DHTTP CachingActionno-store (uncacheable)FIX
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 |
BImage Optimization10 images, 0 KB saveableREVIEW
BJS Bundles24 scripts, 134 KB unusedREVIEW
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
APage Weight Budget945 KB transferred, 60 requestsPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (110 KB)PASS
Web fonts
5
110 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
APage Weight Inventory60 resources · 945 KB · 134 KB savings availablePASS
~133.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 60 resources | 944.8 KiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall60 requests over 2643msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.internetsociety.org www.internetsociety.org | Other | 681ms | 44 KB | — | €11/mo | Costly |
HubSpot Analytics js.hs-analytics.net | Analytics | 480ms | 42 KB | — | €8/mo | Costly |
Unattributable Unattributable | Other | 301ms | 0 KB | — | €5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 187ms | 138 KB | 46% | €3/mo | Optional |
www.internetsociety.org www.internetsociety.org | Other | 155ms | 30 KB | — | €2/mo | Optional |
cdn-cookieyes.com cdn-cookieyes.com | Other | 102ms | 8 KB | — | €2/mo | Optional |
www.internetsociety.org www.internetsociety.org | Other | 101ms | 46 KB | 82% | €2/mo | Optional |
These scripts may cost more than they're worth
- www.internetsociety.org adds 681ms and costs ~€11/month
- HubSpot Analytics adds 480ms and costs ~€8/month
- Unattributable adds 301ms and costs ~€5/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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 681ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
HubSpot Analytics takes 480ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Unattributable takes 301ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
82% of www.internetsociety.org's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev