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.
908 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.50 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
107 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.034
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.08 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.
2.87 s
Page Load Progression
FPage Weight BudgetAction4.7 MB transferred, 89 requestsFIX
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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS BundlesAction24 scripts, 355 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://script.crazyegg.com/scripts/addons/1.0.146/survey.js | 100 KB | 74 KB (77%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-LN1LMYMEK9&cx=c>m=4e64k0 | 175 KB | 64 KB (37%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NLSR9XP | 160 KB | 61 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-1035846286&cx=c>m=4e64k0 | 144 KB | 56 KB (39%) | ✓ | 3rd |
| https://www.k-state.edu/ksu-resources/branding/6/js/ksu.js?ver=5.2.0 | 69 KB | 46 KB (68%) | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/handlebars@latest/dist/handlebars.js | 47 KB | 28 KB (61%) | ✗ | 3rd |
| https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js | 55 KB | 25 KB (46%) | ✓ | 3rd |
| https://script.crazyegg.com/pages/scripts/0091/7419.js | 3 KB | — | ✓ | 3rd |
| https://googleads.g.doubleclick.net/pagead/viewthroughconversion/837729734/?random=1776893848761&cv=11&fst=1776893848761&bg=ffffff&guid=ON&async=1&en=gtag.config>m=45be64k0v9128880179z8836186655za20gzb836186655zd836186655xec&gcd=13l3l3l3l1l1&dma=0&tag_exp=0~115616986~115938466~115938468~117266401~118463261&u_w=800&u_h=600&url=https%3A%2F%2Fwww.k-state.edu%2F&rcb=18&frm=0&tiba=K-State%20%7C%20Kansas%20State%20University&hn=www.googleadservices.com&npa=0&pscdl=noapi&auid=2078379404.1776893848&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uamb=0&uam=&uap=macOS&uapv=10.15.7&uaw=0&data=event%3Dgtag.config&rfmt=3&fmt=4 | 2 KB | — | ✓ | 3rd |
| https://success.signin.k-state.edu/cas-gateway-affiliation-release/gateway.js | 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
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 InventoryAction89 resources · 4.7 MB · 355 KB savings availableFIX
~355.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 89 resources | 4.7 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction25 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
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
BJS Execution Cost911ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 166ms | 3ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-LN1LMYMEK9&cx=c>m=4e64k0 | 135ms | 107ms | 27ms | 3rd |
| https://www.k-state.edu/ksu-resources/branding/6/js/ksu.js?ver=5.2.0 | 134ms | 44ms | 9ms | 3rd |
| https://www.k-state.edu/ | 113ms | 3ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NLSR9XP | 110ms | 92ms | 16ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-1035846286&cx=c>m=4e64k0 | 100ms | 79ms | 21ms | 3rd |
| https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js | 89ms | 78ms | 6ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 64ms | 55ms | 4ms | 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 Loading8 fonts (152 KB)PASS
Web fonts
8
152 KB total
Render-blocking
0
of 8
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 Waterfall89 requests over 2311msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 166ms | 0 KB | — | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 135ms | 175 KB | 37% | $2/mo | Optional |
www.k-state.edu www.k-state.edu | Other | 134ms | 69 KB | 68% | $2/mo | Optional |
www.k-state.edu www.k-state.edu | Other | 113ms | 21 KB | — | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 110ms | 160 KB | 39% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 100ms | 144 KB | 39% | $1/mo | Optional |
script.crazyegg.com script.crazyegg.com | Other | 89ms | 55 KB | 46% | $1/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 64ms | 26 KB | — | $1/mo | Optional |
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
68% of www.k-state.edu'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