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.
3.78 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
11.91 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
250 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.
5.51 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.
15.06 s
Page Load Progression
FPage Weight BudgetAction4.6 MB transferred, 44 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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS BundlesAction15 scripts, 537 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 362 KB | 220 KB (61%) | ✓ | 3rd |
| https://www.psychiatry.org/bundles/app?v=169Y0id3FhbkM8ly2jrD13de0guLI8Y-D-sqBAAPTlo1 | 165 KB | 118 KB (71%) | ✓ | 3rd |
| https://www.psychiatry.org/bundles/jquery-ui?v=4wk3vpAM5e15eFhIIiHHawwKes2icINLp9J-NBqewGU1 | 89 KB | 80 KB (89%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202512.1.0/otBannerSdk.js | 126 KB | 67 KB (53%) | ✓ | 3rd |
| https://www.psychiatry.org/kentico/bundles/forms/scripts?v=-bjGh-FOT6yDTxgrHwJwJf92VzWLPBz3wNicLVM1-v01 | 31 KB | 30 KB (95%) | ✓ | 3rd |
| https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js | 30 KB | 22 KB (75%) | ✓ | 3rd |
| https://www.psychiatry.org/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js | 1 KB | — | ✓ | 3rd |
| https://www.psychiatry.org/scripts/OneTrustConsent.js | 1 KB | — | ✓ | 3rd |
| https://www.psychiatry.org/bundles/jquery-unobtrusive-ajax?v=xrOBCOOAZ9Yz1_xnxbYeoUZg8LKWeWcJsFM3nIre0H41 | 2 KB | — | ✓ | 3rd |
| https://www.psychiatry.org/bundles/jquery-validation?v=_2NARcHqgXjmcyzoEO-6dbbnH3elQxR0HYVvVd8_xNw1 | 9 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 InventoryAction44 resources · 4.6 MB · 537 KB savings availableFIX
~536.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 44 resources | 4.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization12 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
CJS Execution CostAction1859ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 471ms | 50ms | 0ms | 3rd |
| https://www.psychiatry.org/ | 450ms | 12ms | 3ms | 3rd |
| https://www.psychiatry.org/bundles/app?v=169Y0id3FhbkM8ly2jrD13de0guLI8Y-D-sqBAAPTlo1 | 291ms | 199ms | 39ms | 3rd |
| https://www.gstatic.com/recaptcha/releases/gTpTIWhbKpxADzTzkcabhXN4/recaptcha__en.js | 266ms | 156ms | 104ms | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202512.1.0/otBannerSdk.js | 244ms | 156ms | 52ms | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js | 73ms | 32ms | 1ms | 3rd |
| https://cdn.cookielaw.org/consent/0199bf34-94d7-7242-b2c5-7e2d08ba0a9e/OtAutoBlock.js | 64ms | 56ms | 5ms | 3rd |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (165 KB)PASS
Web fonts
2
165 KB total
Render-blocking
0
of 2
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
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 ~64 KB and ~128 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall44 requests over 1545msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 471ms | 0 KB | — | €5/mo | Costly |
www.psychiatry.org www.psychiatry.org | Other | 450ms | 24 KB | — | €5/mo | Costly |
www.psychiatry.org www.psychiatry.org | Other | 291ms | 165 KB | 71% | €3/mo | Costly |
www.gstatic.com www.gstatic.com | Other | 266ms | 362 KB | 61% | €3/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 244ms | 126 KB | 53% | €3/mo | Essential |
cdnjs cdnjs.cloudflare.com | CDN | 73ms | 5 KB | — | €1/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 64ms | 7 KB | — | €1/mo | Essential |
These scripts may cost more than they're worth
- Unattributable adds 471ms and costs ~€5/month
- www.psychiatry.org adds 450ms and costs ~€5/month
- www.psychiatry.org adds 291ms and costs ~€3/month
- www.gstatic.com adds 266ms 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
Unattributable takes 471ms 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.psychiatry.org takes 450ms 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.psychiatry.org takes 291ms 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
71% of www.psychiatry.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
www.gstatic.com takes 266ms 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
61% of www.gstatic.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
53% of OneTrust'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