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.
4.34 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
8.60 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
432 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.003
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
13.06 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.
33.25 s
Page Load Progression
FPage Weight BudgetAction11.4 MB transferred, 185 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
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
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
FJS Execution CostAction6198ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 1357ms | 12ms | 0ms | 3rd |
| https://widget.tagembed.com/widget/static/js/main.cc9bc473309cd77d5eca.js | 1303ms | 1043ms | 49ms | 3rd |
| https://widget.tagembed.com/widget/static/js/6651.cd87534151bbdf7909e0.chunk.js?v=202604221910 | 926ms | 342ms | 3ms | 3rd |
| https://auburn.edu/ | 844ms | 7ms | 4ms | 1st |
| https://cdn.jsdelivr.net/npm/hls.js@1.1.4/dist/hls.min.js | 457ms | 332ms | 25ms | 3rd |
| https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js | 368ms | 329ms | 17ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-S96V7Q8DMB | 268ms | 219ms | 43ms | 3rd |
| https://script.crazyegg.com/pages/versioned/tracking-scripts/158692313dc4b9f2e28d9e9025e38d6b.js | 168ms | 111ms | 7ms | 3rd |
| https://widget.tagembed.com/widget/static/js/3556.84de982d08df740ca411.chunk.js?v=202604221910 | 143ms | 135ms | 4ms | 3rd |
| https://widget.tagembed.com/widget/static/js/2466.371f9305226a68c982dc.chunk.js?v=202604221910 | 114ms | 71ms | 43ms | 3rd |
Showing top 10 of 13 scripts
DJS BundlesAction40 scripts, 304 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-S96V7Q8DMB | 160 KB | 63 KB (39%) | ✓ | 3rd |
| https://auburn.edu/template/2024/_assets/js/bootstrap.bundle.min.js | 77 KB | 60 KB (79%) | ✓ | 1st |
| https://cdn.jsdelivr.net/npm/hls.js@1.1.4/dist/hls.min.js | 94 KB | 55 KB (58%) | ✓ | 3rd |
| https://widget.tagembed.com/widget/static/js/main.cc9bc473309cd77d5eca.js | 112 KB | 46 KB (41%) | ✓ | 3rd |
| https://widget.tagembed.com/widget/static/js/4079.8bf5861f57259a77378a.chunk.js?v=202604221910 | 33 KB | 31 KB (94%) | ✓ | 3rd |
| https://script.crazyegg.com/pages/versioned/common-scripts/4ce8c7df8d425cc50464576824ed91eb.js | 55 KB | 27 KB (50%) | ✓ | 3rd |
| https://widget.tagembed.com/widget/static/js/2466.371f9305226a68c982dc.chunk.js?v=202604221910 | 78 KB | 23 KB (29%) | ✓ | 3rd |
| https://widget.tagembed.com/widget/static/js/4759.d508523c496823f40c91.chunk.js?v=202604221910 | 4 KB | — | ✓ | 3rd |
| https://static.doubleclick.net/instream/ad_status.js | 0 KB | — | ✓ | 3rd |
| https://script.crazyegg.com/pages/scripts/0119/6328.js | 3 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 InventoryAction185 resources · 11.4 MB · 304 KB savings availableFIX
~304.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 185 resources | 11.4 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
max-age=0, no-cache, no-store, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| max-age | 0 | Cache for 0 seconds |
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
| must-revalidate | — | Must recheck with server after expiry |
BThird-Party Impact59% third-party, 0 ms blockingREVIEW
CImage OptimizationAction73 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
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
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
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 Loading15 fonts (596 KB)PASS
Web fonts
15
596 KB total
Render-blocking
0
of 15
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
- 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)
Fixing the unchecked items could save ~71 KB and ~142 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints26 hints, 0 missing preconnectsPASS
Current Resource Hints
26 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall185 requests over 6024msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 1357ms | 0 KB | — | $18/mo | Costly |
widget.tagembed.com widget.tagembed.com | Other | 1303ms | 112 KB | 41% | $17/mo | Costly |
widget.tagembed.com widget.tagembed.com | Other | 926ms | 8 KB | — | $12/mo | Costly |
jsDelivr cdn.jsdelivr.net | CDN | 457ms | 94 KB | 58% | $6/mo | Costly |
script.crazyegg.com script.crazyegg.com | Other | 368ms | 55 KB | 50% | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 268ms | 160 KB | 39% | $4/mo | Costly |
script.crazyegg.com script.crazyegg.com | Other | 168ms | 23 KB | — | $2/mo | Optional |
widget.tagembed.com widget.tagembed.com | Other | 143ms | 15 KB | — | $2/mo | Optional |
widget.tagembed.com widget.tagembed.com | Other | 114ms | 78 KB | 29% | $2/mo | Optional |
widget.tagembed.com widget.tagembed.com | Other | 104ms | 18 KB | — | $1/mo | Optional |
ajax.googleapis.com ajax.googleapis.com | Other | 86ms | 30 KB | — | $1/mo | Optional |
www.youtube.com www.youtube.com | Other | 59ms | 11 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 1357ms and costs ~$18/month
- widget.tagembed.com adds 1303ms and costs ~$17/month
- widget.tagembed.com adds 926ms and costs ~$12/month
- jsDelivr adds 457ms and costs ~$6/month
- script.crazyegg.com adds 368ms and costs ~$5/month
- Google Tag Manager adds 268ms and costs ~$4/month
86% 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
Unattributable takes 1357ms 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
widget.tagembed.com takes 1303ms 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
widget.tagembed.com takes 926ms 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
jsDelivr takes 457ms 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
58% of jsDelivr'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
script.crazyegg.com takes 368ms 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 268ms 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