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.
5.48 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.79 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
105 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.
5.90 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.
11.64 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DPage Weight InventoryAction100 resources · 1.8 MB · 83 KB savings availableFIX
~83.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 100 resources | 1.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.8 MB transferred, 100 requestsREVIEW
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
BImage Optimization53 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
CJS Execution CostAction1845ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cdnjs.cloudflare.com/ajax/libs/skrollr/0.5.8/skrollr.min.js | 480ms | 103ms | 1ms | 3rd |
| Unattributable | 389ms | 7ms | 0ms | 3rd |
| https://www.sovrn.com/commerce/?utm_source=viglink | 362ms | 69ms | 11ms | 3rd |
| https://www.sovrn.com/cdn-cgi/challenge-platform/scripts/jsd/main.js | 262ms | 249ms | 3ms | 3rd |
| https://code.jquery.com/jquery-3.3.1.min.js | 213ms | 166ms | 8ms | 3rd |
| https://www.sovrn.com/wp-content/themes/wptheme-vellum2024/js/bubble-scroller.js?1663626469371 | 140ms | 113ms | 25ms | 3rd |
BJS Bundles23 scripts, 83 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.sovrn.com/wp-content/plugins/sassy-social-share/public/js/sassy-social-share-public.js?ver=3.3.79 | 48 KB | 45 KB (95%) | ✓ | 3rd |
| https://www.sovrn.com/wp-content/themes/wptheme-vellum2024/js/bubble-scroller.js?1663626469371 | 80 KB | 38 KB (49%) | ✓ | 3rd |
| https://www.sovrn.com/wp-content/plugins/real-time-validation-for-gravity-forms/public/assets/js/default_validation.js?ver=1.7.0 | 1 KB | — | ✓ | 3rd |
| https://www.sovrn.com/wp-content/themes/wptheme-vellum2024/js/page-init.js?ver=1.0.14. | 3 KB | — | ✓ | 3rd |
| https://www.sovrn.com/wp-content/plugins/real-time-validation-for-gravity-forms/public/assets/js/public.js?ver=1.7.0 | 1 KB | — | ✓ | 3rd |
| https://code.jquery.com/jquery-3.3.1.min.js | 30 KB | — | ✓ | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.9.0/slick.min.js?ver=1.0.1 | 10 KB | — | ✓ | 3rd |
| https://www.sovrn.com/wp-content/plugins/webtoffee-gdpr-cookie-consent/admin/modules/ccpa/assets/js/cookie-law-info-ccpa.js?ver=2.3.9 | 2 KB | — | ✓ | 3rd |
| https://www.sovrn.com/wp-content/plugins/print-o-matic/js/printomat.js?ver=2.0.11 | 1 KB | — | ✓ | 3rd |
| https://www.sovrn.com/wp-content/plugins/print-o-matic/js/print_elements.js?ver=1.1 | 1 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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (294 KB)PASS
Web fonts
4
294 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~58 KB and ~116 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall100 requests over 1893msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdnjs cdnjs.cloudflare.com | CDN | 480ms | 4 KB | — | $6/mo | Costly |
Unattributable Unattributable | Other | 389ms | 0 KB | — | $5/mo | Costly |
www.sovrn.com www.sovrn.com | Other | 362ms | 29 KB | — | $5/mo | Costly |
www.sovrn.com www.sovrn.com | Other | 262ms | 0 KB | — | $3/mo | Costly |
code.jquery.com code.jquery.com | Other | 213ms | 30 KB | — | $3/mo | Costly |
www.sovrn.com www.sovrn.com | Other | 140ms | 80 KB | 49% | $2/mo | Optional |
These scripts may cost more than they're worth
- cdnjs adds 480ms and costs ~$6/month
- Unattributable adds 389ms and costs ~$5/month
- www.sovrn.com adds 362ms and costs ~$5/month
- www.sovrn.com adds 262ms and costs ~$3/month
- code.jquery.com adds 213ms 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
cdnjs 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 389ms 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
www.sovrn.com takes 362ms 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
www.sovrn.com takes 262ms 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
code.jquery.com takes 213ms 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