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.
2.14 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.14 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
101 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.005
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.33 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.
7.17 s
Page Load Progression
FPage Weight BudgetAction2.8 MB transferred, 124 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
FJS BundlesAction41 scripts, 1.0 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-R7QEB3YF8F&cx=c>m=4e64k1 | 176 KB | 114 KB (65%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-SHQ10M91ZV&cx=c>m=4e64k1 | 176 KB | 114 KB (65%) | ✓ | 3rd |
| https://dbukjj6eu5tsf.cloudfront.net/assets.sidearmsports.com/responsive/js/bundle.1739916735684.js | 140 KB | 98 KB (70%) | ✓ | 3rd |
| https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMA.js | 106 KB | 82 KB (78%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-R7QEB3YF8F | 176 KB | 69 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-M6RJ333V | 146 KB | 66 KB (45%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-TW6R675 | 121 KB | 63 KB (52%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KB8J6S5J | 127 KB | 63 KB (50%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-Y29PC3P5S9&cx=c>m=4e64k1 | 155 KB | 63 KB (40%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=DC-15770876&cx=c>m=4e64k1 | 129 KB | 62 KB (48%) | ✓ | 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 InventoryAction124 resources · 2.8 MB · 1.0 MB savings availableFIX
~1.0 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 124 resources | 2.8 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization22 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
CJS Execution CostAction1118ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cdnjs.cloudflare.com/ajax/libs/require.js/2.2.0/require.min.js | 202ms | 176ms | 0ms | 3rd |
| https://www.ncaa.org/ | 152ms | 9ms | 10ms | 3rd |
| Unattributable | 134ms | 5ms | 0ms | 3rd |
| https://analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js | 93ms | 73ms | 9ms | 3rd |
| https://transcend-cdn.com/cm/30fbff84-b0e3-4e26-9084-0b5158fdb1ed/gpp.js | 82ms | 66ms | 16ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17553948878&cx=c>m=4e64k1 | 76ms | 67ms | 8ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-R7QEB3YF8F | 73ms | 63ms | 10ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-M6RJ333V | 73ms | 58ms | 10ms | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js | 70ms | 34ms | 7ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-Y29PC3P5S9&cx=c>m=4e64k1 | 55ms | 45ms | 10ms | 3rd |
Showing top 10 of 12 scripts
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 (198 KB)PASS
Web fonts
6
198 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 Waterfall124 requests over 4231msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdnjs cdnjs.cloudflare.com | CDN | 202ms | 8 KB | — | $3/mo | Costly |
www.ncaa.org www.ncaa.org | Other | 152ms | 29 KB | — | $2/mo | Optional |
Unattributable Unattributable | Other | 134ms | 0 KB | — | $2/mo | Optional |
analytics.tiktok.com analytics.tiktok.com | Other | 93ms | 110 KB | 50% | $1/mo | Optional |
transcend-cdn.com transcend-cdn.com | Other | 82ms | 152 KB | 15% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 76ms | 144 KB | 37% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 73ms | 176 KB | 39% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 73ms | 146 KB | 45% | $1/mo | Optional |
cdnjs cdnjs.cloudflare.com | CDN | 70ms | 29 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 55ms | 155 KB | 40% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 54ms | 127 KB | 50% | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 54ms | 131 KB | 44% | $1/mo | Optional |
These scripts may cost more than they're worth
- cdnjs adds 202ms 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
cdnjs takes 202ms 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
50% of analytics.tiktok.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