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.
673 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
746 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
14 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.077
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.43 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.
2.70 s
Page Load Progression
FPage Weight BudgetAction4.8 MB transferred, 61 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 ImpactAction92% third-party, 0 ms blockingFIX
DJS BundlesAction22 scripts, 487 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-KXM44XGGS1&cx=c>m=4e64k0 | 163 KB | 109 KB (67%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-KXM44XGGS1 | 163 KB | 109 KB (67%) | ✓ | 3rd |
| https://cdn.extendthemes.com/main/wp-content/cache/autoptimize/js/autoptimize_54195ccfd48956c27bfa36deb18baff3.js | 112 KB | 74 KB (66%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-K727XDQ | 155 KB | 66 KB (43%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-5RFL56D&cx=c>m=4e64k0 | 163 KB | 66 KB (41%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-109464846-1 | 125 KB | 63 KB (50%) | ✓ | 3rd |
| https://cdn.extendthemes.com/main/wp-content/plugins/autoptimize/classes/external/js/lazysizes.min.js?ao_version=2.8.4 | 5 KB | — | ✓ | 3rd |
| https://www.google-analytics.com/analytics.js | 21 KB | — | ✓ | 3rd |
| https://extendthemes.com/wp-includes/js/jquery/jquery.min.js | 32 KB | — | ✓ | 1st |
| https://extendstudio.postaffiliatepro.com/scripts/63roaw?accountId=81cd1388&url=S_extendthemes.com%2F&referrer=&isInIframe=false&getParams=&anchor= | 0 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 InventoryAction61 resources · 4.8 MB · 487 KB savings availableFIX
~486.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 61 resources | 4.8 MiB | ||||||
DHTTP CachingActionno-store (uncacheable)FIX
no-store, no-cache, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| no-store | — | Never cache this response |
| no-cache | — | Cache but always revalidate first |
| must-revalidate | — | Must recheck with server after expiry |
CImage OptimizationAction9 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
BJS Execution Cost581ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://extendthemes.com/ | 230ms | 10ms | 2ms | 1st |
| https://cdn.extendthemes.com/main/wp-content/cache/autoptimize/js/autoptimize_54195ccfd48956c27bfa36deb18baff3.js | 81ms | 54ms | 11ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-K727XDQ | 78ms | 58ms | 19ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-5RFL56D&cx=c>m=4e64k0 | 78ms | 65ms | 13ms | 3rd |
| Unattributable | 61ms | 3ms | 0ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=UA-109464846-1 | 52ms | 42ms | 8ms | 3rd |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (154 KB)PASS
Web fonts
3
154 KB total
Render-blocking
0
of 3
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)
Fixing the unchecked items could save ~23 KB and ~46 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall61 requests over 2584msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdn.extendthemes.com cdn.extendthemes.com | Other | 81ms | 112 KB | 66% | $0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 78ms | 155 KB | 43% | $0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 78ms | 163 KB | 41% | $0/mo | Optional |
Unattributable Unattributable | Other | 61ms | 0 KB | — | $0/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 52ms | 125 KB | 50% | $0/mo | Optional |
60% 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
66% of cdn.extendthemes.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
50% 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