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.
558 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
5.23 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
277 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.30 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.
5.62 s
Page Load Progression
FPage Weight BudgetAction2.8 MB transferred, 131 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 Execution CostAction2028ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.uidaho.edu/_next/static/chunks/framework-77dff60c8c44585c.js | 403ms | 266ms | 7ms | 3rd |
| https://www.uidaho.edu/ | 384ms | 3ms | 0ms | 3rd |
| Unattributable | 218ms | 6ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WK3GF5WP | 188ms | 166ms | 18ms | 3rd |
| https://fw.cdn.technolutions.net/framework/base.js?v=db28 | 129ms | 96ms | 31ms | 3rd |
| https://ucmbc.uidaho.edu/script.js | 126ms | 116ms | 4ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-B9QHVKBYBJ&cx=c>m=4e64k1 | 107ms | 88ms | 18ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 101ms | 78ms | 3ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-10612390&cx=c>m=4e64k1 | 98ms | 81ms | 16ms | 3rd |
| https://www.uidaho.edu/_next/static/chunks/pages/%5B%5B...path%5D%5D-cc7946a5b3264cd6.js | 92ms | 92ms | 0ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction54 scripts, 657 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://fw.cdn.technolutions.net/framework/base.js?v=db28 | 218 KB | 106 KB (49%) | ✓ | 3rd |
| https://www.uidaho.edu/_next/static/chunks/1248-90f56cb2d8983359.js | 155 KB | 105 KB (68%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-B9QHVKBYBJ&cx=c>m=4e64k1 | 177 KB | 69 KB (39%) | ✓ | 3rd |
| https://www.uidaho.edu/_next/static/chunks/3748-11e646b105904766.js | 104 KB | 64 KB (62%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-WK3GF5WP | 172 KB | 64 KB (37%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-809532766&cx=c>m=4e64k1 | 144 KB | 59 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-10612390&cx=c>m=4e64k1 | 131 KB | 58 KB (44%) | ✓ | 3rd |
| https://ucmbc.uidaho.edu/plugin/library/7c39b65ec835d467210389a27894a60b | 52 KB | 38 KB (74%) | ✓ | 3rd |
| https://ucmbc.uidaho.edu/plugin/plugin/2b9fb16a4267f9d2ff9003b3e30b26f5 | 74 KB | 36 KB (49%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 33 KB (34%) | ✓ | 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 InventoryAction131 resources · 2.8 MB · 657 KB savings availableFIX
~656.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 131 resources | 2.8 MiB | ||||||
CImage OptimizationAction24 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
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingpublic, max-age=0, must-revalidateREVIEW
public, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading1 fonts (26 KB)PASS
Web fonts
1
26 KB total
Render-blocking
0
of 1
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 Waterfall131 requests over 5467msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.uidaho.edu www.uidaho.edu | Other | 403ms | 60 KB | — | €4/mo | Costly |
www.uidaho.edu www.uidaho.edu | Other | 384ms | 34 KB | — | €4/mo | Costly |
Unattributable Unattributable | Other | 218ms | 0 KB | — | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 188ms | 172 KB | 37% | €2/mo | Optional |
fw.cdn.technolutions.net fw.cdn.technolutions.net | Other | 129ms | 218 KB | 49% | €1/mo | Optional |
ucmbc.uidaho.edu ucmbc.uidaho.edu | Other | 126ms | 40 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 107ms | 177 KB | 39% | €1/mo | Optional |
Microsoft Clarity scripts.clarity.ms | Session Replay | 101ms | 26 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 98ms | 131 KB | 44% | €1/mo | Optional |
www.uidaho.edu www.uidaho.edu | Other | 92ms | 0 KB | — | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 77ms | 144 KB | 41% | €1/mo | Optional |
sc-static.net sc-static.net | Other | 54ms | 25 KB | — | €1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 51ms | 45 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.uidaho.edu adds 403ms and costs ~€4/month
- www.uidaho.edu adds 384ms and costs ~€4/month
- Unattributable adds 218ms and costs ~€2/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.uidaho.edu takes 403ms 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
www.uidaho.edu takes 384ms 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 218ms 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