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.
1.80 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.96 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
188 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.58 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.
3.39 s
Page Load Progression
FPage Weight BudgetAction15.6 MB transferred, 100 requestsFIX
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
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS BundlesAction29 scripts, 213 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-7SWSBYHBHJ&cx=c>m=4e64h1 | 157 KB | 66 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YEYQJ0XWPL&cx=c>m=4e64h1 | 158 KB | 61 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MV3VHK2M | 139 KB | 59 KB (43%) | ✓ | 3rd |
| https://aux.tamu.edu/v1.13.2/js/jquery-3.7.1.min.js | 40 KB | 27 KB (70%) | ✗ | 3rd |
| https://www.clarity.ms/tag/k92wmfdzpl?ref=gtm | 1 KB | — | ✓ | 3rd |
| https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.CYE28xQTWxU.2021.O/am=AAAABA/d=1/exm=base,root/ed=1/br=1/rs=AGKMywGc21Bc99sDrhbnjOkQlq7nTfp_WQ/m=r78Drb | 146 KB | — | ✓ | 3rd |
| https://tamu.apparmor.com/Notifications/Feeds/Javascript/?AlertID=170 | 0 KB | — | ✓ | 3rd |
| https://aux.tamu.edu/v1.13.2/js/aux-mega-menu.js | 3 KB | — | ✓ | 3rd |
| https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.CYE28xQTWxU.2021.O/am=AAAABA/d=1/br=1/rs=AGKMywGc21Bc99sDrhbnjOkQlq7nTfp_WQ/m=root,base | 193 KB | — | ✓ | 3rd |
| https://www.youtube.com/s/player/218d9d92/player_embed_es6.vflset/en_US/base.js | 436 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
DPage Weight InventoryAction100 resources · 15.6 MB · 213 KB savings availableFIX
~213.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 100 resources | 15.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction19 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
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
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 CostAction1367ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.tamu.edu/ | 374ms | 21ms | 1ms | 3rd |
| Unattributable | 351ms | 12ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-MV3VHK2M | 239ms | 204ms | 32ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-YEYQJ0XWPL&cx=c>m=4e64h1 | 151ms | 117ms | 32ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 93ms | 64ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-7SWSBYHBHJ&cx=c>m=4e64h1 | 88ms | 71ms | 16ms | 3rd |
| https://aux.tamu.edu/v1.13.2/styles/aux-styles.css | 71ms | 0ms | 0ms | 3rd |
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 Loading6 fonts (193 KB)PASS
Web fonts
6
193 KB total
Render-blocking
0
of 6
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
Network Waterfall100 requests over 5740msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.tamu.edu www.tamu.edu | Other | 374ms | 19 KB | — | $5/mo | Costly |
Unattributable Unattributable | Other | 351ms | 0 KB | — | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 239ms | 139 KB | 43% | $3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 151ms | 158 KB | 39% | $2/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 93ms | 26 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 88ms | 157 KB | 42% | $1/mo | Optional |
aux.tamu.edu aux.tamu.edu | Other | 71ms | 174 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.tamu.edu adds 374ms and costs ~$5/month
- Unattributable adds 351ms and costs ~$5/month
- Google Tag Manager adds 239ms 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
www.tamu.edu takes 374ms 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 351ms 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 239ms 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