Performance
· 15 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.
1.43 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.69 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
38 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.83 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.
3.03 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 sDThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS BundlesAction65 scripts, 484 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://fast.wistia.com/assets/external/engines/hls_video.js@379dc59f3883ecbd8a4ec99277538cfd8c619ee8 | 159 KB | 122 KB (77%) | ✓ | 3rd |
| https://fast.wistia.com/assets/external/E-v1.js | 162 KB | 70 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-VH90VGZ7YR&cx=c&_slc=1 | 167 KB | 69 KB (41%) | ✓ | 3rd |
| https://cookie-cdn.cookiepro.com/scripttemplates/202512.1.0/otBannerSdk.js | 126 KB | 68 KB (54%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-875523944 | 138 KB | 58 KB (42%) | ✓ | 3rd |
| https://cdn.optimizely.com/js/5056361059319808.js | 94 KB | 48 KB (52%) | ✓ | 3rd |
| https://fast.wistia.com/assets/external/captions.js | 43 KB | 29 KB (66%) | ✓ | 3rd |
| https://browser.sentry-cdn.com/9.6.1/bundle.min.js | 25 KB | 21 KB (86%) | ✓ | 3rd |
| https://www.pingdom.com/wp-content/themes/pingdom-2018/dev/scripts/sw19p-resources.js?ver=1754550806 | 1 KB | — | ✓ | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/is-in-viewport/3.0.4/isInViewport.min.js | 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
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
FPage Weight InventoryAction221 resources · 1.9 MB · 484 KB savings availableFIX
~484.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 221 resources | 1.9 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.9 MB transferred, 221 requestsREVIEW
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
BImage Optimization27 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
BJS Execution Cost946ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://fast.wistia.com/assets/external/E-v1.js | 310ms | 257ms | 18ms | 3rd |
| Unattributable | 233ms | 19ms | 0ms | 3rd |
| https://www.pingdom.com/ | 142ms | 9ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-VH90VGZ7YR&cx=c&_slc=1 | 76ms | 63ms | 12ms | 3rd |
| https://cookie-cdn.cookiepro.com/scripttemplates/202512.1.0/otBannerSdk.js | 76ms | 47ms | 11ms | 3rd |
| https://assets.adobedtm.com/764583179334/cc8234bc2247/launch-d5262cfabf77.min.js | 56ms | 48ms | 4ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-875523944 | 53ms | 45ms | 7ms | 3rd |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading6 fonts (129 KB)PASS
Web fonts
6
129 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
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
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall221 requests over 3270msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
fast.wistia.com fast.wistia.com | Other | 310ms | 162 KB | 43% | $4/mo | Costly |
Unattributable Unattributable | Other | 233ms | 0 KB | — | $3/mo | Costly |
www.pingdom.com www.pingdom.com | Other | 142ms | 29 KB | — | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 76ms | 167 KB | 41% | $1/mo | Optional |
cookie-cdn.cookiepro.com cookie-cdn.cookiepro.com | Other | 76ms | 126 KB | 54% | $1/mo | Optional |
assets.adobedtm.com assets.adobedtm.com | Other | 56ms | 41 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 53ms | 138 KB | 42% | $1/mo | Optional |
These scripts may cost more than they're worth
- fast.wistia.com adds 310ms and costs ~$4/month
- Unattributable adds 233ms and costs ~$3/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
fast.wistia.com takes 310ms 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 233ms 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
54% of cookie-cdn.cookiepro.com'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