Performance
· 17 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.
3.13 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.39 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.62 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.149
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
5.40 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.
15.71 s
Page Load Progression
DPage Weight BudgetAction2.2 MB transferred, 105 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 Execution CostAction6224ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.webmd.com/ | 1672ms | 13ms | 29ms | 3rd |
| Unattributable | 1364ms | 528ms | 0ms | 3rd |
| https://img.lb.wbmdstatic.com/webmd_v1_static_vue/091e9c5e823d0cb2/client/js/webmd-elements.8c3bdf73.js | 951ms | 873ms | 13ms | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 843ms | 716ms | 101ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 502ms | 336ms | 68ms | 3rd |
| https://img.lb.wbmdstatic.com/webmd_static_vue/file-explorer/webmd/global-metrics/global-metrics.min.js | 314ms | 267ms | 20ms | 3rd |
| https://assets.adobedtm.com/2c8c1e17b98c/27339f98909a/launch-3931f206f4f7.min.js | 263ms | 174ms | 56ms | 3rd |
| https://img.lb.wbmdstatic.com/webmd_v1_static_vue/091e9c5e823d0cb2/client/js/chunk-vendors.3e118943.js | 134ms | 7ms | 123ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/otSDKStub.js | 111ms | 83ms | 4ms | 3rd |
| https://img.lb.wbmdstatic.com/webmd_static_vue/file-explorer/webmd/consumer_assets/site_images/webmd-ccm/webmd-ccm.min.js | 70ms | 44ms | 3ms | 3rd |
FJS BundlesAction31 scripts, 736 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 0 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 177 KB (49%) | ✓ | 3rd |
| https://img.lb.wbmdstatic.com/webmd_v1_static_vue/091e9c5e823d0cb2/client/js/chunk-vendors.3e118943.js | 222 KB | 115 KB (52%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202510.2.0/otBannerSdk.js | 124 KB | 58 KB (47%) | ✓ | 3rd |
| https://img.lb.wbmdstatic.com/webmd_static_vue/file-explorer/webmd/global-metrics/global-metrics.min.js | 70 KB | 32 KB (46%) | ✓ | 3rd |
| https://assets.adobedtm.com/2c8c1e17b98c/27339f98909a/8b1d9e783cbd/RC841b65a8a8f74ec782de8c900d9414f6-source.min.js | 1 KB | — | ✓ | 3rd |
| https://assets.adobedtm.com/2c8c1e17b98c/27339f98909a/8b1d9e783cbd/RCedf519991b6c4bc0ab3a0ccb3f4b8542-source.min.js | 1 KB | — | ✓ | 3rd |
| https://img.lb.wbmdstatic.com/webmd_v1_static_vue/091e9c5e823d0cb2/client/js/webmd-elements.8c3bdf73.js | 29 KB | — | ✓ | 3rd |
| https://img.lb.wbmdstatic.com/webmd_v1_static_vue/091e9c5e823d0cb2/client/js/app.9eb733c4.js | 4 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 InventoryAction105 resources · 2.2 MB · 736 KB savings availableFIX
~735.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 105 resources | 2.2 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction44 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
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
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 Loading6 fonts (100 KB)PASS
Web fonts
6
100 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 Hints13 hints, 0 missing preconnectsPASS
Current Resource Hints
13 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall105 requests over 2394msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.webmd.com www.webmd.com | Other | 1672ms | 71 KB | — | $22/mo | Costly |
Unattributable Unattributable | Other | 1364ms | 0 KB | — | $18/mo | Costly |
img.lb.wbmdstatic.com img.lb.wbmdstatic.com | Other | 951ms | 29 KB | — | $13/mo | Costly |
www.gstatic.com www.gstatic.com | Other | 843ms | 0 KB | 49% | $11/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 502ms | 124 KB | 47% | $7/mo | Essential |
img.lb.wbmdstatic.com img.lb.wbmdstatic.com | Other | 314ms | 70 KB | 46% | $4/mo | Costly |
assets.adobedtm.com assets.adobedtm.com | Other | 263ms | 71 KB | — | $3/mo | Costly |
img.lb.wbmdstatic.com img.lb.wbmdstatic.com | Other | 134ms | 222 KB | 52% | $2/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 111ms | 9 KB | — | $1/mo | Essential |
img.lb.wbmdstatic.com img.lb.wbmdstatic.com | Other | 70ms | 8 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- www.webmd.com adds 1672ms and costs ~$22/month
- Unattributable adds 1364ms and costs ~$18/month
- img.lb.wbmdstatic.com adds 951ms and costs ~$13/month
- www.gstatic.com adds 843ms and costs ~$11/month
- img.lb.wbmdstatic.com adds 314ms and costs ~$4/month
- assets.adobedtm.com adds 263ms 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.webmd.com takes 1672ms 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 1364ms 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
img.lb.wbmdstatic.com takes 951ms 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.gstatic.com takes 843ms 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
img.lb.wbmdstatic.com takes 314ms 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 263ms 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
52% of img.lb.wbmdstatic.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