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.
6.31 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
9.60 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.16 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.007
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
9.28 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.
20.90 s
Page Load Progression
594 ms 1.2 s
1.8 s 2.4 s 3.0 s 3.6 s 4.2 s
4.7 sFPage Weight BudgetAction6.6 MB transferred, 134 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
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.
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 CostAction4036ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://s.psecn.photoshelter.com/marketing-2026-04-16/wp-content/themes/photoshelter/dist/assets/js/theme.js?ver=1772126327 | 755ms | 253ms | 26ms | 3rd |
| Unattributable | 628ms | 34ms | 0ms | 3rd |
| https://www.photoshelter.com/ | 518ms | 49ms | 6ms | 3rd |
| https://js.qualified.com/qualified.js?token=cUXkaFNnffEVeCQp | 428ms | 377ms | 36ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-534WKDSX | 390ms | 333ms | 43ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-KVMNJL24QQ&cx=c>m=4e64k0 | 381ms | 314ms | 64ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-1048371370&cx=c>m=4e64k0 | 261ms | 222ms | 38ms | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 185ms | 153ms | 28ms | 3rd |
| https://js.qualified.com/packs/js/multimodal_v2-fe90ad83.js | 161ms | 125ms | 27ms | 3rd |
| https://j.6sc.co/6si.min.js | 98ms | 78ms | 5ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction44 scripts, 714 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://s.psecn.photoshelter.com/marketing-2026-04-16/wp-content/themes/photoshelter/dist/assets/js/theme.js?ver=1772126327 | 327 KB | 265 KB (81%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-KVMNJL24QQ&cx=c>m=4e64k0 | 174 KB | 68 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-534WKDSX | 162 KB | 63 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-1048371370&cx=c>m=4e64k0 | 146 KB | 63 KB (43%) | ✓ | 3rd |
| https://js.qualified.com/qualified.js?token=cUXkaFNnffEVeCQp | 117 KB | 57 KB (49%) | ✓ | 3rd |
| https://js.qualified.com/qualified.js?token=cUXkaFNnffEVeCQp | 0 KB | 57 KB (49%) | ✓ | 3rd |
| https://www.clickcease.com/monitor/stat.js | 44 KB | 38 KB (90%) | ✓ | 3rd |
| https://script.hotjar.com/modules.6a0f3932cb1341a35c18.js | 57 KB | 38 KB (67%) | ✓ | 3rd |
| https://dev.visualwebsiteoptimizer.com/cdn/web/djIkdGU6Ny4wOmFzeW5jJWdxdWVyeQ==/tag-71b55da48a4a43c893cee9eb8e65122ebr.js | 57 KB | 35 KB (61%) | ✓ | 3rd |
| https://js.qualified.com/packs/js/multimodal_v2-fe90ad83.js | 97 KB | 30 KB (31%) | ✓ | 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 InventoryAction134 resources · 6.6 MB · 714 KB savings availableFIX
~714.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 134 resources | 6.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction35 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Performance issues directly impact user engagement and conversion rates.
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 Loading8 fonts (387 KB)PASS
Web fonts
8
387 KB total
Render-blocking
0
of 8
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 ~52 KB and ~104 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints4 hints, 0 missing preconnectsPASS
Current Resource Hints
4 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall134 requests over 7662msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
s.psecn.photoshelter.com s.psecn.photoshelter.com | Other | 755ms | 327 KB | 81% | $10/mo | Costly |
Unattributable Unattributable | Other | 628ms | 0 KB | — | $8/mo | Costly |
www.photoshelter.com www.photoshelter.com | Other | 518ms | 311 KB | — | $7/mo | Costly |
js.qualified.com js.qualified.com | Other | 428ms | 0 KB | 49% | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 390ms | 162 KB | 39% | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 381ms | 174 KB | 39% | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 261ms | 146 KB | 43% | $3/mo | Costly |
Hotjar script.hotjar.com | Session Replay | 185ms | 57 KB | 67% | $2/mo | Optional |
js.qualified.com js.qualified.com | Other | 161ms | 97 KB | 31% | $2/mo | Optional |
j.6sc.co j.6sc.co | Other | 98ms | 19 KB | — | $1/mo | Optional |
ws-assets.zoominfo.com ws-assets.zoominfo.com | Other | 97ms | 14 KB | — | $1/mo | Optional |
dev.visualwebsiteoptimizer.com dev.visualwebsiteoptimizer.com | Other | 83ms | 57 KB | 61% | $1/mo | Optional |
LinkedIn Insight snap.licdn.com | Advertising | 52ms | 19 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- s.psecn.photoshelter.com adds 755ms and costs ~$10/month
- Unattributable adds 628ms and costs ~$8/month
- www.photoshelter.com adds 518ms and costs ~$7/month
- js.qualified.com adds 428ms and costs ~$6/month
- Google Tag Manager adds 390ms and costs ~$5/month
- Google Tag Manager adds 381ms and costs ~$5/month
- Google Tag Manager adds 261ms 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
s.psecn.photoshelter.com takes 755ms 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 s.psecn.photoshelter.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 628ms 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.photoshelter.com takes 518ms 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
js.qualified.com takes 428ms 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 390ms 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 381ms 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 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
67% of Hotjar'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
61% of dev.visualwebsiteoptimizer.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