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.
2.46 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
6.68 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
50 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.
4.13 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.
7.15 s
Page Load Progression
1.1 s
2.2 s
3.3 s 4.3 s
5.4 s 6.5 s 7.6 s
8.7 sFPage Weight BudgetAction4.4 MB transferred, 151 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
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2948ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.mdanderson.org/etc.clientlibs/mda/clientlibs/mda-web/external.min.js | 1150ms | 513ms | 31ms | 3rd |
| https://ucm-us.verint-cdn.com/files/modules/unified-websdk/2.11.0/database.js | 408ms | 403ms | 0ms | 3rd |
| Unattributable | 338ms | 12ms | 0ms | 3rd |
| https://www.mdanderson.org/ | 216ms | 18ms | 1ms | 3rd |
| https://cform.loyalhealth.com/app-961-6a80bf7fc23a9a39e48a.js | 206ms | 195ms | 2ms | 3rd |
| https://www.mdanderson.org/etc.clientlibs/mda/clientlibs/mda-web/internal.min.js | 152ms | 77ms | 46ms | 3rd |
| https://gateway.foresee.com/code/6.1.2-mp/mpathy-modern.js | 137ms | 129ms | 2ms | 3rd |
| https://tags.tiqcdn.com/utag/mdanderson/mdandersonorg/prod/utag.js | 103ms | 88ms | 12ms | 3rd |
| https://solutions.invocacdn.com/js/networks/1299/0084722918/tag-live.js | 66ms | 63ms | 1ms | 3rd |
| https://cdn.evgnet.com/beacon/mdandersoncancercenter/mdacc_main/scripts/evergage.min.js | 61ms | 52ms | 6ms | 3rd |
Showing top 10 of 12 scripts
FJS BundlesAction55 scripts, 1.6 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://guide.loyalhealth.com/client/7.client.bundle.js | 887 KB | 481 KB (54%) | ✓ | 3rd |
| https://www.mdanderson.org/etc.clientlibs/mda/clientlibs/mda-web/external.min.js | 397 KB | 273 KB (69%) | ✓ | 3rd |
| https://www.mdanderson.org/etc.clientlibs/mda/clientlibs/mda-web/internal.min.js | 364 KB | 182 KB (50%) | ✗ | 3rd |
| https://www.mdanderson.org/etc.clientlibs/mda/clientlibs/mda-web/clientlib-video.min.js | 175 KB | 154 KB (89%) | ✓ | 3rd |
| https://guide.loyalhealth.com/client/12.client.bundle.js | 203 KB | 129 KB (64%) | ✓ | 3rd |
| https://guide.loyalhealth.com/client/10.client.bundle.js | 237 KB | 121 KB (51%) | ✓ | 3rd |
| https://guide.loyalhealth.com/client/6.client.bundle.js | 141 KB | 64 KB (46%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=DC-15344997 | 130 KB | 60 KB (47%) | ✓ | 3rd |
| https://cdn.evgnet.com/beacon/mdandersoncancercenter/mdacc_main/scripts/evergage.min.js | 57 KB | 34 KB (60%) | ✗ | 3rd |
| https://cform.loyalhealth.com/app-961-6a80bf7fc23a9a39e48a.js | 121 KB | 31 KB (26%) | ✓ | 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 InventoryAction151 resources · 4.4 MB · 1.6 MB savings availableFIX
~1.6 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 151 resources | 4.4 MiB | ||||||
CImage OptimizationAction36 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
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 Loading13 fonts (546 KB)PASS
Web fonts
13
546 KB total
Render-blocking
0
of 13
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- 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
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- 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
- Convert to woff2 for ~30% smaller file size
- 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
- Convert to woff2 for ~30% smaller file size
- 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 ~358 KB and ~716 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
AHTTP Cachingmax-age=3600 (1 hour)PASS
max-age=3600
| Directive | Value | Meaning |
|---|---|---|
| max-age | 3600 | Cache for 1 hour |
Network Waterfall151 requests over 12607msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.mdanderson.org www.mdanderson.org | Other | 1150ms | 397 KB | 69% | $18/mo | Costly |
ucm-us.verint-cdn.com ucm-us.verint-cdn.com | Other | 408ms | 2 KB | — | $6/mo | Costly |
Unattributable Unattributable | Other | 338ms | 0 KB | — | $5/mo | Costly |
www.mdanderson.org www.mdanderson.org | Other | 216ms | 29 KB | — | $3/mo | Costly |
cform.loyalhealth.com cform.loyalhealth.com | Other | 206ms | 121 KB | 26% | $3/mo | Costly |
www.mdanderson.org www.mdanderson.org | Other | 152ms | 364 KB | 50% | $2/mo | Optional |
gateway.foresee.com gateway.foresee.com | Other | 137ms | 25 KB | — | $2/mo | Optional |
tags.tiqcdn.com tags.tiqcdn.com | Other | 103ms | 72 KB | 36% | $2/mo | Optional |
solutions.invocacdn.com solutions.invocacdn.com | Other | 66ms | 2 KB | — | $1/mo | Optional |
cdn.evgnet.com cdn.evgnet.com | Other | 61ms | 57 KB | 60% | $1/mo | Optional |
tags.tiqcdn.com tags.tiqcdn.com | Other | 58ms | 15 KB | — | $1/mo | Optional |
www.mdanderson.org www.mdanderson.org | Other | 52ms | 175 KB | 89% | $1/mo | Optional |
These scripts may cost more than they're worth
- www.mdanderson.org adds 1150ms and costs ~$18/month
- ucm-us.verint-cdn.com adds 408ms and costs ~$6/month
- Unattributable adds 338ms and costs ~$5/month
- www.mdanderson.org adds 216ms and costs ~$3/month
- cform.loyalhealth.com adds 206ms 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
www.mdanderson.org takes 1150ms 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
69% of www.mdanderson.org'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
ucm-us.verint-cdn.com takes 408ms 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 338ms 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.mdanderson.org takes 216ms 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
cform.loyalhealth.com takes 206ms 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 www.mdanderson.org'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
60% of cdn.evgnet.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
89% of www.mdanderson.org'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