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.
9.52 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
14.26 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
446 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.
10.45 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.
15.38 s
Page Load Progression
DPage Weight BudgetAction2.3 MB transferred, 52 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
DThird-Party ImpactAction84% third-party, 0 ms blockingFIX
DJS Execution CostAction2005ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-8E7P5QRH2N | 378ms | 291ms | 63ms | 3rd |
| https://widgets.q4app.com/widgets/dependencies/q4.core.1.1.9.min.js | 355ms | 131ms | 106ms | 3rd |
| https://abc.xyz/ | 353ms | 178ms | 11ms | 1st |
| Unattributable | 341ms | 8ms | 0ms | 3rd |
| https://abc.xyz/js/module/widgets/dist/dependencies/evergreen.core.1.0.0.min.js | 293ms | 151ms | 99ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=UA-223917284-1&cx=c>m=4e64k1h1 | 222ms | 168ms | 52ms | 3rd |
| https://abc.xyz/js/typescript/dist/index.js | 63ms | 42ms | 14ms | 1st |
FJS BundlesAction20 scripts, 944 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://widgets.q4app.com/widgets/dependencies/q4.core.1.1.9.min.js | 761 KB | 613 KB (81%) | ✓ | 3rd |
| https://abc.xyz/js/module/widgets/dist/dependencies/evergreen.core.1.0.0.min.js | 202 KB | 168 KB (83%) | ✓ | 1st |
| https://www.googletagmanager.com/gtag/js?id=UA-223917284-1&cx=c>m=4e64k1h1 | 115 KB | 65 KB (56%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-8E7P5QRH2N | 154 KB | 62 KB (40%) | ✓ | 3rd |
| https://widgets.q4app.com/widgets/dependencies/q4.app.1.1.9.min.js | 41 KB | 36 KB (88%) | ✓ | 3rd |
| https://abc.xyz/js/module/widgets/dist/latest/evergreen.q4MultiSecFilings.min.js | 2 KB | — | ✓ | 1st |
| https://s206.q4cdn.com/479360582/files/js/polyfills/findIndex_polyfill.js | 1 KB | — | ✓ | 3rd |
| https://abc.xyz/js/typescript/dist/q4CookieConsent/index.js | 3 KB | — | ✓ | 1st |
| https://abc.xyz/js/module/widgets/dist/latest/evergreen.q4Slideshow.min.js | 1 KB | — | ✓ | 1st |
| https://abc.xyz/js/module/widgets/dist/latest/evergreen.q4Pager.min.js | 2 KB | — | ✓ | 1st |
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 InventoryAction52 resources · 2.3 MB · 944 KB savings availableFIX
~943.9 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 52 resources | 2.3 MiB | ||||||
CImage OptimizationAction7 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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (111 KB)PASS
Web fonts
2
111 KB total
Render-blocking
0
of 2
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 Hints1 hints, 0 missing preconnectsPASS
Current Resource Hints
1 resource hints configured
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
A+HTTP Cachingmax-age=10 (10 seconds)PASS
public, max-age=10, stale-if-error=86400, stale-while-revalidate=86400
| Directive | Value | Meaning |
|---|---|---|
| public | — | Any cache may store this response |
| max-age | 10 | Cache for 10 seconds |
| stale-if-error | 86400 | |
| stale-while-revalidate | 86400 | Serve stale for 1 day while fetching fresh |
Network Waterfall52 requests over 4398msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 378ms | 154 KB | 40% | $5/mo | Costly |
widgets.q4app.com widgets.q4app.com | Other | 355ms | 761 KB | 81% | $5/mo | Costly |
Unattributable Unattributable | Other | 341ms | 0 KB | — | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 222ms | 115 KB | 56% | $3/mo | Costly |
These scripts may cost more than they're worth
- Google Tag Manager adds 378ms and costs ~$5/month
- widgets.q4app.com adds 355ms and costs ~$5/month
- Unattributable adds 341ms and costs ~$5/month
- Google Tag Manager adds 222ms and costs ~$3/month
65% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
Google Tag Manager takes 378ms 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
widgets.q4app.com takes 355ms 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
81% of widgets.q4app.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
Unattributable takes 341ms 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
Google Tag Manager takes 222ms 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
56% of Google Tag Manager'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