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.
2.46 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.63 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
730 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.205
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.77 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.
9.10 s
Page Load Progression
FPage Weight BudgetAction5.5 MB transferred, 68 requestsFIX
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction5864ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.usu.edu/ | 1401ms | 80ms | 2ms | 3rd |
| https://www.usu.edu/assets/bs4/lib/lazysizes/lazysizes.min.js | 1198ms | 1104ms | 2ms | 3rd |
| https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js | 948ms | 565ms | 21ms | 3rd |
| Unattributable | 739ms | 37ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YP02VK67GD&cx=c>m=4e64h1 | 670ms | 558ms | 91ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WPLCQ7L | 389ms | 311ms | 73ms | 3rd |
| https://kit.fontawesome.com/f0188d4897.js | 384ms | 220ms | 48ms | 3rd |
| https://dx.mountain.com/spx?dxver=4.0.0&shaid=47236&tdr=&plh=https%3A%2F%2Fwww.usu.edu%2F&cb=129140163 | 69ms | 56ms | 5ms | 3rd |
| https://cdn.evgnet.com/beacon/i55653z555563fr3j3o3e3d3n8091566431/engage/scripts/evergage.min.js | 66ms | 40ms | 25ms | 3rd |
DPage Weight InventoryAction68 resources · 5.5 MB · 171 KB savings availableFIX
~170.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 68 resources | 5.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization8 images, 0 KB saveableREVIEW
CJS BundlesAction17 scripts, 171 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtm.js?id=GTM-WPLCQ7L | 156 KB | 78 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YP02VK67GD&cx=c>m=4e64h1 | 178 KB | 61 KB (34%) | ✓ | 3rd |
| https://cdn.evgnet.com/beacon/i55653z555563fr3j3o3e3d3n8091566431/engage/scripts/evergage.min.js | 42 KB | 32 KB (78%) | ✓ | 3rd |
| https://kit.fontawesome.com/f0188d4897.js | 6 KB | — | ✓ | 3rd |
| https://www.youtube.com/s/player/218d9d92/www-widgetapi.vflset/www-widgetapi.js | 11 KB | — | ✓ | 3rd |
| https://www.usu.edu/assets/bs4/js/init.1.2.js | 17 KB | — | ✗ | 3rd |
| https://www.usu.edu/assets/bs4/lib/lazysizes/lazysizes.min.js | 4 KB | — | ✓ | 3rd |
| https://www.youtube.com/iframe_api | 4 KB | — | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/js/bootstrap.bundle.min.js | 24 KB | — | ✓ | 3rd |
| https://www.usu.edu/assets/bs4/lib/moment/moment.min-2.29.3.js | 19 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
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 Loading1 fonts (45 KB)PASS
Web fonts
1
45 KB total
Render-blocking
0
of 1
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
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall68 requests over 3700msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.usu.edu www.usu.edu | Other | 1401ms | 12 KB | — | $19/mo | Costly |
www.usu.edu www.usu.edu | Other | 1198ms | 4 KB | — | $16/mo | Costly |
ajax.googleapis.com ajax.googleapis.com | Other | 948ms | 31 KB | — | $13/mo | Costly |
Unattributable Unattributable | Other | 739ms | 0 KB | — | $10/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 670ms | 178 KB | 34% | $9/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 389ms | 156 KB | 50% | $5/mo | Costly |
kit.fontawesome.com kit.fontawesome.com | Other | 384ms | 6 KB | — | $5/mo | Costly |
dx.mountain.com dx.mountain.com | Other | 69ms | 7 KB | — | $1/mo | Optional |
cdn.evgnet.com cdn.evgnet.com | Other | 66ms | 42 KB | 78% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.usu.edu adds 1401ms and costs ~$19/month
- www.usu.edu adds 1198ms and costs ~$16/month
- ajax.googleapis.com adds 948ms and costs ~$13/month
- Unattributable adds 739ms and costs ~$10/month
- Google Tag Manager adds 670ms and costs ~$9/month
- Google Tag Manager adds 389ms and costs ~$5/month
- kit.fontawesome.com adds 384ms 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.usu.edu takes 1401ms 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.usu.edu takes 1198ms 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
ajax.googleapis.com takes 948ms 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 739ms 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
Google Tag Manager takes 670ms 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
Google Tag Manager 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
kit.fontawesome.com takes 384ms 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
78% of cdn.evgnet.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