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.
2.62 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
5.35 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
231 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.028
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.73 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.
5.53 s
Page Load Progression
FPage Weight BudgetAction6.1 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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS BundlesAction31 scripts, 433 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://siteimproveanalytics.com/js/siteanalyze_8543.js | 92 KB | 73 KB (80%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-33TTT716N7&cx=c>m=4e64h1h1 | 179 KB | 69 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5ZJML75 | 166 KB | 65 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17878439880&cx=c>m=4e64h1h1 | 144 KB | 63 KB (44%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-1036238582&cx=c>m=4e64h1h1 | 146 KB | 62 KB (43%) | ✓ | 3rd |
| https://www.clickcease.com/monitor/stat.js | 44 KB | 38 KB (90%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 37 KB (38%) | ✓ | 3rd |
| https://capi-automation.s3.us-east-2.amazonaws.com/public/client_js/capiParamBuilder/clientParamBuilder.bundle.js | 63 KB | 25 KB (41%) | ✓ | 3rd |
| https://omni-templates.unt.edu/_resources/js/assets/height-width.js | 1 KB | — | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/jquery@3.6/dist/jquery.min.js | 32 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 InventoryAction89 resources · 6.1 MB · 433 KB savings availableFIX
~432.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 89 resources | 6.1 MiB | ||||||
CImage OptimizationAction31 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
CJS Execution CostAction1377ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.unt.edu/ | 377ms | 5ms | 2ms | 3rd |
| Unattributable | 199ms | 3ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-5ZJML75 | 194ms | 153ms | 33ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-33TTT716N7&cx=c>m=4e64h1h1 | 161ms | 118ms | 26ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-1036238582&cx=c>m=4e64h1h1 | 122ms | 99ms | 22ms | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.2/js/all.min.js | 120ms | 34ms | 58ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-17878439880&cx=c>m=4e64h1h1 | 95ms | 71ms | 23ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 57ms | 43ms | 14ms | 3rd |
| https://cdn.jsdelivr.net/npm/jquery@3.6/dist/jquery.min.js | 52ms | 34ms | 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 Loading7 fonts (340 KB)PASS
Web fonts
7
340 KB total
Render-blocking
0
of 7
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
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~127 KB and ~254 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
AHTTP Cachingmax-age=900 (15 minutes)PASS
max-age=900
| Directive | Value | Meaning |
|---|---|---|
| max-age | 900 | Cache for 15 minutes |
Network Waterfall89 requests over 4210msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.unt.edu www.unt.edu | Other | 377ms | 69 KB | — | $5/mo | Costly |
Unattributable Unattributable | Other | 199ms | 0 KB | — | $3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 194ms | 166 KB | 39% | $3/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 161ms | 179 KB | 38% | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 122ms | 146 KB | 43% | $2/mo | Optional |
cdnjs cdnjs.cloudflare.com | CDN | 120ms | 396 KB | — | $2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 95ms | 144 KB | 44% | $1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 57ms | 97 KB | 38% | $1/mo | Optional |
jsDelivr cdn.jsdelivr.net | CDN | 52ms | 32 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.unt.edu adds 377ms and costs ~$5/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.unt.edu takes 377ms 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