Performance
· 27 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.
7.13 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
16.32 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
769 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.047
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
8.85 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.
17.66 s
Page Load Progression
FPage Weight BudgetAction4.0 MB transferred, 506 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
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
FJS Execution CostAction26529ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://parceltheory.ca/ | 19372ms | 88ms | 61ms | 1st |
| Unattributable | 2956ms | 222ms | 0ms | 1st |
| https://parceltheory.ca/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js | 667ms | 491ms | 33ms | 1st |
| https://cdn.shopify.com/extensions/01a1538c-2d85-7454-8a1b-6b91046cfc78/hoppy-free-shipping-365/assets/script.js | 648ms | 421ms | 34ms | 3rd |
| https://cdn.shopify.com/shopifycloud/shop-js/modules/v2/chunk.register_cLcgCW8c.esm.js | 360ms | 257ms | 0ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 346ms | 255ms | 33ms | 3rd |
| https://connect.facebook.net/signals/config/924409560298646?v=2.9.423&r=stable&domain=parceltheory.ca&im=1&hme=766752a074f0cb0756dd3275a46fdecbcfe3de1ab8f573546734b619e44d384f&ex_m=118%2C241%2C171%2C27%2C82%2C83%2C162%2C78%2C77%2C11%2C181%2C102%2C20%2C153%2C141%2C46%2C85%2C90%2C149%2C176%2C183%2C8%2C4%2C5%2C7%2C6%2C3%2C103%2C115%2C32%2C17%2C31%2C18%2C33%2C34%2C35%2C37%2C55%2C163%2C87%2C126%2C22%2C24%2C51%2C47%2C49%2C48%2C95%2C104%2C108%2C124%2C160%2C164%2C53%2C125%2C29%2C26%2C133%2C79%2C43%2C166%2C165%2C167%2C157%2C155%2C30%2C42%2C66%2C123%2C178%2C80%2C21%2C128%2C93%2C76%2C23%2C97%2C98%2C130%2C96%2C151%2C150%2C154%2C109%2C177%2C180%2C41%2C56%2C127%2C54%2C161%2C72%2C185%2C110%2C184%2C210%2C255%2C84%2C274%2C273%2C272%2C14%2C25%2C28%2C40%2C62%2C117%2C68%2C10%2C73%2C111%2C112%2C113%2C119%2C144%2C38%2C36%2C146%2C147%2C148%2C143%2C142%2C172%2C86%2C175%2C173%2C174%2C57%2C69%2C67%2C137%2C19%2C179%2C52%2C324%2C325%2C326%2C323%2C340%2C362%2C248%2C237%2C70%2C238%2C236%2C365%2C356%2C59%2C249%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%2C168%2C88%2C89%2C129%2C44%2C39%2C60%2C63%2C114%2C182%2C1%2C138%2C16%2C136%2C12%2C2%2C64%2C105%2C15%2C75%2C71%2C132%2C101%2C100%2C187%2C188%2C106%2C107%2C9%2C116%2C186%2C58%2C158%2C99%2C91%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189 | 281ms | 232ms | 49ms | 3rd |
| event-observer-collector.js | 262ms | 234ms | 0ms | 1st |
| https://parceltheory.ca/cdn/s/trekkie.storefront.27d1ed78e37fdd7f8767f655600479b6802fa878.min.js | 244ms | 205ms | 36ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=GT-M348PWN8 | 198ms | 151ms | 46ms | 3rd |
Showing top 10 of 19 scripts
FJS BundlesAction331 scripts, 534 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdn.shopify.com/extensions/01a154d4-0092-70a0-a709-bb10855ce533/forms-2626/assets/index.js | 261 KB | 245 KB (94%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-M348PWN8 | 153 KB | 68 KB (44%) | ✓ | 3rd |
| https://cdn.shopify.com/extensions/01a152b6-d813-7323-8332-bdecbd6db5df/hoppy-popups-266/assets/script.js | 57 KB | 39 KB (68%) | ✗ | 3rd |
| https://parceltheory.ca/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js | 83 KB | 37 KB (45%) | ✓ | 1st |
| https://connect.facebook.net/en_US/fbevents.js | 115 KB | 36 KB (32%) | ✓ | 3rd |
| https://connect.facebook.net/signals/config/924409560298646?v=2.9.423&r=stable&domain=parceltheory.ca&im=1&hme=766752a074f0cb0756dd3275a46fdecbcfe3de1ab8f573546734b619e44d384f&ex_m=118%2C241%2C171%2C27%2C82%2C83%2C162%2C78%2C77%2C11%2C181%2C102%2C20%2C153%2C141%2C46%2C85%2C90%2C149%2C176%2C183%2C8%2C4%2C5%2C7%2C6%2C3%2C103%2C115%2C32%2C17%2C31%2C18%2C33%2C34%2C35%2C37%2C55%2C163%2C87%2C126%2C22%2C24%2C51%2C47%2C49%2C48%2C95%2C104%2C108%2C124%2C160%2C164%2C53%2C125%2C29%2C26%2C133%2C79%2C43%2C166%2C165%2C167%2C157%2C155%2C30%2C42%2C66%2C123%2C178%2C80%2C21%2C128%2C93%2C76%2C23%2C97%2C98%2C130%2C96%2C151%2C150%2C154%2C109%2C177%2C180%2C41%2C56%2C127%2C54%2C161%2C72%2C185%2C110%2C184%2C210%2C255%2C84%2C274%2C273%2C272%2C14%2C25%2C28%2C40%2C62%2C117%2C68%2C10%2C73%2C111%2C112%2C113%2C119%2C144%2C38%2C36%2C146%2C147%2C148%2C143%2C142%2C172%2C86%2C175%2C173%2C174%2C57%2C69%2C67%2C137%2C19%2C179%2C52%2C324%2C325%2C326%2C323%2C340%2C362%2C248%2C237%2C70%2C238%2C236%2C365%2C356%2C59%2C249%2C121%2C145%2C92%2C135%2C61%2C134%2C140%2C139%2C65%2C74%2C168%2C88%2C89%2C129%2C44%2C39%2C60%2C63%2C114%2C182%2C1%2C138%2C16%2C136%2C12%2C2%2C64%2C105%2C15%2C75%2C71%2C132%2C101%2C100%2C187%2C188%2C106%2C107%2C9%2C116%2C186%2C58%2C158%2C99%2C91%2C81%2C131%2C120%2C169%2C50%2C159%2C0%2C94%2C152%2C156%2C170%2C45%2C122%2C13%2C189 | 106 KB | 35 KB (34%) | ✓ | 3rd |
| https://cdn.shopify.com/extensions/01a1538c-2d85-7454-8a1b-6b91046cfc78/hoppy-free-shipping-365/assets/script.js | 58 KB | 30 KB (51%) | ✗ | 3rd |
| https://cdn.shopify.com/extensions/01a1538c-2d85-7454-8a1b-6b91046cfc78/hoppy-free-shipping-365/assets/swiper.js | 40 KB | 24 KB (60%) | ✗ | 3rd |
| https://cdn.shopify.com/storefront/web-components/chat/agent-runtime-Vej3u4rx.js | 42 KB | 22 KB (52%) | ✓ | 3rd |
| https://parceltheory.ca/cdn/shopifycloud/checkout-web/assets/c1/d25d1b95.BzQPqFEu.js | 1 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
DPage Weight InventoryAction506 resources · 4.0 MB · 534 KB savings availableFIX
~534.2 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 506 resources | 4.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization23 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
CDocument CompressionActionDocument response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BCSS Performance Depth2 CSS depth issue(s) detectedREVIEW
AThird-Party Impact37% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (162 KB)PASS
Web fonts
5
162 KB total
Render-blocking
0
of 5
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 Hints169 hints, 0 missing preconnectsPASS
Current Resource Hints
169 resource hints configured
The same href shouldn't appear in multiple hint rels -- one wins, the others are wasted markup and may confuse cache behavior. Sample: //parceltheory.ca/cdn/fonts/dm_sans/dmsans_n4.ec80bd4dd7e1a334c969c265873491ae56018d72.woff2 (preload+preload).
Performance issues directly impact user engagement and conversion rates.
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Asset CompressionAll 1 asset host use brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
AJavaScript Blocking1 JS blocking issue(s) 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 Waterfall506 requests over 37402msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdn.shopify.com cdn.shopify.com | Other | 648ms | 58 KB | 51% | CA$5/mo | Costly |
cdn.shopify.com cdn.shopify.com | Other | 360ms | 14 KB | — | CA$3/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 346ms | 115 KB | 32% | CA$3/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 281ms | 106 KB | 34% | CA$2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 198ms | 153 KB | 44% | CA$2/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 182ms | 57 KB | 68% | CA$1/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 141ms | 10 KB | — | CA$1/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 138ms | 21 KB | — | CA$1/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 122ms | 42 KB | 52% | CA$1/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 105ms | 0 KB | — | CA$1/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 65ms | 0 KB | — | CA$0/mo | Optional |
These scripts may cost more than they're worth
- cdn.shopify.com adds 648ms and costs ~CA$5/month
- cdn.shopify.com adds 360ms and costs ~CA$3/month
- Facebook Pixel adds 346ms and costs ~CA$3/month
- Facebook Pixel adds 281ms and costs ~CA$2/month
cdn.shopify.com takes 648ms 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
51% of cdn.shopify.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
cdn.shopify.com takes 360ms 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
Facebook Pixel takes 346ms 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
Facebook Pixel takes 281ms 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
68% of cdn.shopify.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
52% of cdn.shopify.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
Image Optimization57 images, 990 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
57
Total Size
990 KB