Performance
· 24 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.
1.11 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.38 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
245 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.
2.48 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.
3.62 s
Page Load Progression
FPage Weight BudgetAction29.0 MB transferred, 132 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
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
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 ImpactAction99% third-party, 0 ms blockingFIX
DJS Execution CostAction2619ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/8706.9f9354c132882253b6ae.js | 973ms | 381ms | 1ms | 3rd |
| https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/2099.8e1994abb812990dd1df.js | 537ms | 447ms | 9ms | 3rd |
| https://assets.squarespace.com/universal/scripts-compressed/common-0a8c36863adaccf7-min.en-US.js | 415ms | 226ms | 16ms | 3rd |
| https://www.thepassivepractice.com/ | 285ms | 10ms | 3ms | 1st |
| Unattributable | 185ms | 2ms | 0ms | 1st |
| https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/site-bundle.52c5e172465bde21589d94024ac19bbf.js | 156ms | 77ms | 2ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-74MV10S65V | 68ms | 53ms | 9ms | 3rd |
DJS BundlesAction65 scripts, 441 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://assets.squarespace.com/universal/scripts-compressed/common-0a8c36863adaccf7-min.en-US.js | 255 KB | 154 KB (60%) | ✓ | 3rd |
| https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/2099.8e1994abb812990dd1df.js | 167 KB | 80 KB (48%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-74MV10S65V | 178 KB | 74 KB (42%) | ✓ | 3rd |
| https://assets.squarespace.com/universal/scripts-compressed/common-vendors-2fbfc859f1ebfd76-min.en-US.js | 180 KB | 70 KB (39%) | ✓ | 3rd |
| https://assets.squarespace.com/universal/scripts-compressed/common-vendors-stable-397e4959e69d0479-min.en-US.js | 70 KB | 41 KB (59%) | ✓ | 3rd |
| https://assets.squarespace.com/universal/scripts-compressed/performance-cbc83aea355b96ac-min.en-US.js | 33 KB | 22 KB (66%) | ✓ | 3rd |
| https://definitions.sqspcdn.com/website-component-definition/static-assets/website.components.summary/c1a9d5d7-1574-456a-b2a7-c96df010ab9f_776/embed-video-player.js | 2 KB | — | ✓ | 3rd |
| https://static1.squarespace.com/static/vta/5c5a519771c10ba3470d8101/scripts/1546.be889fc991476fb1ab17.js | 3 KB | — | ✓ | 3rd |
| https://assets.squarespace.com/universal/scripts-compressed/extract-css-runtime-bc021c82b075586f-min.en-US.js | 19 KB | — | ✓ | 3rd |
| https://assets.squarespace.com/universal/scripts-compressed/extract-css-moment-js-vendor-5b1fd9aed201e910-min.en-US.js | 59 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 InventoryAction132 resources · 29.0 MB · 441 KB savings availableFIX
~440.8 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 132 resources | 29.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BDocument CompressionDocument response uses gzip; brotli would be ~20% smallerREVIEW
BAsset Compression2 of 3 asset hosts still on gzipREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
AImage Optimization16 images, 0 KB saveablePASS
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+Font Loading11 fonts (311 KB)PASS
Web fonts
11
311 KB total
Render-blocking
0
of 11
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
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 ~3 KB and ~6 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
Network Waterfall132 requests over 2648msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
static1.squarespace.com static1.squarespace.com | Other | 973ms | 14 KB | — | $6/mo | Costly |
static1.squarespace.com static1.squarespace.com | Other | 537ms | 167 KB | 48% | $3/mo | Costly |
assets.squarespace.com assets.squarespace.com | Other | 415ms | 255 KB | 60% | $2/mo | Costly |
static1.squarespace.com static1.squarespace.com | Other | 156ms | 39 KB | — | $1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 68ms | 178 KB | 42% | $0/mo | Optional |
These scripts may cost more than they're worth
- static1.squarespace.com adds 973ms and costs ~$6/month
- static1.squarespace.com adds 537ms and costs ~$3/month
- assets.squarespace.com adds 415ms and costs ~$2/month
82% 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
static1.squarespace.com takes 973ms 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
static1.squarespace.com takes 537ms 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.squarespace.com takes 415ms 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
60% of assets.squarespace.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
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-10-14 — 2026-11-10)
LCP (p75)
2443 ms
76% good
INP (p75)
0 ms
0% good
CLS (p75)
0.000
91% good
FCP (p75)
1030 ms
TTFB (p75)
631 ms
Image Optimization80 images, 1468 KB total, 155 KB wastedINFO
Image Optimization Audit
Total Images
80
Total Size
1468 KB
Oversized
1
Wasted
155 KB