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.
1.45 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.92 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
92 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.529
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.82 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.
4.89 s
Page Load Progression
628 ms
1.3 s
1.9 s 2.5 s
3.1 s
3.8 s
4.4 s
5.0 sFPage Weight BudgetAction8.9 MB transferred, 161 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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS BundlesAction50 scripts, 456 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=AW-724517858&cx=c>m=4e64h1 | 148 KB | 106 KB (72%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-JYZJL3F4BE&cx=c>m=4e64h1 | 174 KB | 69 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-QT13NN6N9S&cx=c>m=4e64h1 | 177 KB | 69 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KRWGQLNT | 120 KB | 64 KB (53%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5FC97GL | 169 KB | 60 KB (35%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-333011086&cx=c>m=4e64h1 | 148 KB | 54 KB (37%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 33 KB (35%) | ✓ | 3rd |
| https://www.redditstatic.com/ads/pixel.js | 19 KB | — | ✓ | 3rd |
| https://tag.simpli.fi/sifitag/a2199230-2230-4af5-9652-7887d49e9efc | 2 KB | — | ✓ | 3rd |
| https://static.cdn.syr.edu/static/www/swagtail_kit/js/navigation.js-UIv7n7t5.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
FPage Weight InventoryAction161 resources · 8.9 MB · 456 KB savings availableFIX
~455.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 161 resources | 8.9 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction46 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.
Performance issues directly impact user engagement and conversion rates.
CJS Execution CostAction1086ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.syracuse.edu/ | 213ms | 8ms | 1ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5FC97GL | 208ms | 186ms | 16ms | 3rd |
| Unattributable | 205ms | 19ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-QT13NN6N9S&cx=c>m=4e64h1 | 139ms | 107ms | 14ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-JYZJL3F4BE&cx=c>m=4e64h1 | 98ms | 80ms | 17ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-333011086&cx=c>m=4e64h1 | 89ms | 77ms | 12ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 85ms | 67ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KRWGQLNT | 51ms | 37ms | 14ms | 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 Loading4 fonts (79 KB)PASS
Web fonts
4
79 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~12 KB and ~24 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall161 requests over 4712msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.syracuse.edu www.syracuse.edu | Other | 213ms | 30 KB | — | $1/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 208ms | 169 KB | 35% | $1/mo | Costly |
Unattributable Unattributable | Other | 205ms | 0 KB | — | $1/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 139ms | 177 KB | 39% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 98ms | 174 KB | 40% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 89ms | 148 KB | 37% | $1/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 85ms | 26 KB | — | $0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 51ms | 120 KB | 53% | $0/mo | Optional |
These scripts may cost more than they're worth
- www.syracuse.edu adds 213ms and costs ~$1/month
- Google Tag Manager adds 208ms and costs ~$1/month
- Unattributable adds 205ms and costs ~$1/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.syracuse.edu 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
Google Tag Manager takes 208ms 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 205ms 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
53% of Google Tag Manager'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