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.
1.61 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.89 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.86 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.02 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.
9.01 s
Page Load Progression
792 ms 1.6 s
2.4 s
3.2 s 4.0 s 4.8 s
5.5 s
6.3 sFPage Weight BudgetAction6.1 MB transferred, 153 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
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
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
FJS Execution CostAction5822ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 882ms | 143ms | 0ms | 3rd |
| https://www.uhc.com/etc.clientlibs/uhcfoundation/clientlibs/clientlib-initial.min.dd255363b93ef2d5b259da2c3ddcde3d.js | 783ms | 477ms | 10ms | 3rd |
| https://cdn.gbqofs.com/uhg/common/p/detector-lazy.min.js | 763ms | 756ms | 5ms | 3rd |
| https://www.uhc.com/etc.clientlibs/uhcfoundation/clientlibs/clientlib-react-components.min.743cadc9965c4deae65dcd5da604faed.js | 560ms | 329ms | 223ms | 3rd |
| https://www.uhc.com/uhccom-api/static/app/v-1.38.0/static/chunks/533-829e06cb2c391bc2.js | 458ms | 335ms | 34ms | 3rd |
| https://cdn.quantummetric.com/qscripts/quantum-uhg.js | 408ms | 390ms | 8ms | 3rd |
| https://www.uhc.com/uhccom-api/static/app/v-1.38.0/static/chunks/178-0280c2d1198b4d12.js | 389ms | 300ms | 6ms | 3rd |
| https://assets.adobedtm.com/512027f42d3c/152e2e360a77/launch-5e90c3319557.min.js | 261ms | 190ms | 35ms | 3rd |
| https://www.uhc.com/ | 242ms | 35ms | 4ms | 3rd |
| https://siteintercept.qualtrics.com/dxjsmodule/12.1a2b7192fd54e87d3971.chunk.js?Q_CLIENTVERSION=2.46.0&Q_CLIENTTYPE=web&Q_BRANDID=www.uhc.com | 212ms | 196ms | 4ms | 3rd |
Showing top 10 of 19 scripts
FJS BundlesAction62 scripts, 1.5 MB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.uhc.com/etc.clientlibs/uhcfoundation/clientlibs/clientlib-react-components.min.743cadc9965c4deae65dcd5da604faed.js | 1401 KB | 818 KB (58%) | ✗ | 3rd |
| https://lpcdn-gcp.lpsnmedia.net/le_unified_window/10.44.1-release_2012042702/desktopEmbedded.js?version=10.44.1-release_2012042702 | 265 KB | 181 KB (68%) | ✓ | 3rd |
| https://www.uhc.com/uhccom-api/static/app/v-1.38.0/static/chunks/789-3dacc0762fa0b1e0.js | 120 KB | 67 KB (56%) | ✓ | 3rd |
| https://assets.adobedtm.com/512027f42d3c/152e2e360a77/launch-5e90c3319557.min.js | 179 KB | 63 KB (35%) | ✓ | 3rd |
| https://cdn.gbqofs.com/uhg/common/p/detector-bootstrap.min.js | 153 KB | 58 KB (38%) | ✓ | 3rd |
| https://www.uhc.com/etc.clientlibs/uhcfoundation/clientlibs/clientlib-site.min.8abd7b007abf1b3b178ff8155796ade6.js | 83 KB | 51 KB (62%) | ✓ | 3rd |
| https://cdn.lpsnmedia.net/api/account/9518691/taglets/scopes/default/onpageload | 107 KB | 41 KB (42%) | ✓ | 3rd |
| https://www.uhc.com/uhccom-api/static/app/v-1.38.0/static/chunks/533-829e06cb2c391bc2.js | 189 KB | 39 KB (20%) | ✓ | 3rd |
| https://cdn.quantummetric.com/qscripts/quantum-uhg.js | 106 KB | 38 KB (36%) | ✓ | 3rd |
| https://www.uhc.com/etc.clientlibs/uhcfoundation/clientlibs/clientlib-initial.min.dd255363b93ef2d5b259da2c3ddcde3d.js | 96 KB | 31 KB (33%) | ✓ | 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 InventoryAction153 resources · 6.1 MB · 1.5 MB savings availableFIX
~1.5 MiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 153 resources | 6.1 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction14 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
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 Loading9 fonts (1056 KB)PASS
Web fonts
9
1056 KB total
Render-blocking
0
of 9
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
- 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 ~391 KB and ~782 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall153 requests over 39697msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 882ms | 0 KB | — | $15/mo | Costly |
www.uhc.com www.uhc.com | Other | 783ms | 96 KB | 33% | $14/mo | Costly |
cdn.gbqofs.com cdn.gbqofs.com | Other | 763ms | 49 KB | 47% | $13/mo | Costly |
www.uhc.com www.uhc.com | Other | 560ms | 1401 KB | 58% | $10/mo | Costly |
www.uhc.com www.uhc.com | Other | 458ms | 189 KB | 20% | $8/mo | Costly |
cdn.quantummetric.com cdn.quantummetric.com | Other | 408ms | 106 KB | 36% | $7/mo | Costly |
www.uhc.com www.uhc.com | Other | 389ms | 73 KB | 30% | $7/mo | Costly |
assets.adobedtm.com assets.adobedtm.com | Other | 261ms | 179 KB | 35% | $5/mo | Costly |
www.uhc.com www.uhc.com | Other | 242ms | 19 KB | — | $4/mo | Costly |
siteintercept.qualtrics.com siteintercept.qualtrics.com | Other | 212ms | 36 KB | 57% | $4/mo | Costly |
www.uhc.com www.uhc.com | Other | 174ms | 8 KB | — | $3/mo | Optional |
www.uhc.com www.uhc.com | Other | 111ms | 83 KB | 62% | $2/mo | Optional |
va1.v.liveperson.net va1.v.liveperson.net | Other | 98ms | 1 KB | — | $2/mo | Optional |
va1.v.liveperson.net va1.v.liveperson.net | Other | 96ms | 1 KB | — | $2/mo | Optional |
va1.v.liveperson.net va1.v.liveperson.net | Other | 91ms | 1 KB | — | $2/mo | Optional |
cdn.gbqofs.com cdn.gbqofs.com | Other | 87ms | 153 KB | 38% | $2/mo | Optional |
lpcdn-gcp.lpsnmedia.net lpcdn-gcp.lpsnmedia.net | Other | 74ms | 265 KB | 68% | $1/mo | Optional |
va1.v.liveperson.net va1.v.liveperson.net | Other | 68ms | 1 KB | — | $1/mo | Optional |
cdn.lpsnmedia.net cdn.lpsnmedia.net | Other | 63ms | 107 KB | 42% | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 882ms and costs ~$15/month
- www.uhc.com adds 783ms and costs ~$14/month
- cdn.gbqofs.com adds 763ms and costs ~$13/month
- www.uhc.com adds 560ms and costs ~$10/month
- www.uhc.com adds 458ms and costs ~$8/month
- cdn.quantummetric.com adds 408ms and costs ~$7/month
- www.uhc.com adds 389ms and costs ~$7/month
- assets.adobedtm.com adds 261ms and costs ~$5/month
- www.uhc.com adds 242ms and costs ~$4/month
- siteintercept.qualtrics.com adds 212ms and costs ~$4/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
Unattributable takes 882ms 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.uhc.com takes 783ms 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
cdn.gbqofs.com takes 763ms 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.uhc.com takes 560ms 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
58% of www.uhc.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
www.uhc.com takes 458ms 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
cdn.quantummetric.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
www.uhc.com takes 389ms 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
assets.adobedtm.com takes 261ms 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.uhc.com takes 242ms 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
siteintercept.qualtrics.com takes 212ms 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
57% of siteintercept.qualtrics.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
62% of www.uhc.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
68% of lpcdn-gcp.lpsnmedia.net'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