https://parceltheory.ca
Performance
· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
78
GRADE
C
FIX
5
REVIEW
4
PASS
11
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
71
92
96
92
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
719 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.35 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.825
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.42 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.
1.35 s
Page Load Progression
1.1 s
2.2 s
3.3 s 4.4 s
5.4 s 6.5 s
7.6 s
8.7 sChecks
2311 PASS 4 REVIEW 5 FIX
FPage Weight BudgetAction4.1 MB transferred, 522 requestsFIX
Page Weight Budget
Action4.1 MB transferred, 522 requests
4.1 MB transferred, 522 requests
Critical::
Page weighs 8.9 MB (4.1 MB transferred)
Warning::
JavaScript is 1.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.4 MB
Warning::
Images are 1.3 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.3 MB
Warning::
522 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.86 g CO2 per page load
4.1 MB transferred
522 requests
0.86 g CO2 per page load
JavaScript 1.4 MiB 34%
Images 1.3 MiB 31%
Other 1.0 MiB 24%
Fonts 162.1 KiB 4%
HTML 158.9 KiB 4%
Other 66.2 KiB 2%
CSS 64.2 KiB 2%
Other 7.8 KiB 0%
Other 195 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Why this matters
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.
Why this matters
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.
Why this matters
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
FJS Execution CostAction6700ms total JS executionFIX
JS Execution Cost
Action6700ms total JS execution
6700ms total JS execution
Warning::
https://parceltheory.ca/: 5419ms CPU time
Warning::
Unattributable: 766ms CPU time
Info::
https://parceltheory.ca/cdn/wpm/b05c62d7ewbe538af9...: 172ms CPU time
Info::
https://cdn.shopify.com/extensions/01a1538c-2d85-7...: 105ms CPU time
Info::
https://connect.facebook.net/signals/config/924409...: 96ms CPU time
Info::
Third-party scripts: 285ms (4% of total)
Main Thread Breakdown
Other 45% Style & Layout 26% Script Evaluation 14% Rendering 12%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://parceltheory.ca/ | 5419ms | 45ms | 15ms | 1st |
| Unattributable | 766ms | 62ms | 0ms | 1st |
| https://parceltheory.ca/cdn/wpm/b05c62d7ewbe538af9pdeb4fec1me339d55am.js | 172ms | 126ms | 6ms | 1st |
| https://cdn.shopify.com/extensions/01a1538c-2d85-7454-8a1b-6b91046cfc78/hoppy-free-shipping-365/assets/script.js | 105ms | 89ms | 8ms | 3rd |
| https://connect.facebook.net/signals/config/924409560298646?v=2.9.423&r=stable&domain=parceltheory.ca&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 | 96ms | 79ms | 15ms | 3rd |
| https://cdn.shopify.com/shopifycloud/shop-js/modules/v2/chunk.register_cLcgCW8c.esm.js | 83ms | 57ms | 0ms | 3rd |
| https://parceltheory.ca/cdn/s/trekkie.storefront.27d1ed78e37fdd7f8767f655600479b6802fa878.min.js | 58ms | 53ms | 2ms | 1st |
FJS BundlesAction331 scripts, 536 KB unusedFIX
JS Bundles
Action331 scripts, 536 KB unused
331 scripts, 536 KB unused
Warning::
https://cdn.shopify.com/extensions/01a154d4-0092-7...: 245 KB unused (94%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=GT-M34...: 68 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.shopify.com/extensions/01a152b6-d813-7...: 39 KB unused (68%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.shopify.com/extensions/01a152b6-d813-7...: unminified — 17 KB could be saved
Warning::
https://parceltheory.ca/cdn/wpm/b05c62d7ewbe538af9...: 37 KB unused (45%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/en_US/fbevents.js: 37 KB unused (33%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 536 KB
536 KB unused JavaScript
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 | 112 KB | 37 KB (33%) | ✓ | 3rd |
| https://connect.facebook.net/signals/config/924409560298646?v=2.9.423&r=stable&domain=parceltheory.ca&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 | 105 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/b8733b27.wW93ykbh.js | 2 KB | — | ✓ | 1st |
Consider code splitting or tree shaking to reduce unused code.
Why this matters
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.
Why this matters
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.
Why this matters
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.
Why this matters
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.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
DPage Weight InventoryAction522 resources · 4.1 MB · 536 KB savings availableFIX
Page Weight Inventory
Action522 resources · 4.1 MB · 536 KB savings available
522 resources · 4.1 MB · 536 KB savings available
Warning::
Page weight 4.1 MB exceeds 1 MB target by 3.1 MB
Got: 4.1 MB Expected: ≤ 1 MB
Info::
~536 KB of savings available
Info::
207 third-party resources (35% of weight)
Info::
2 resources over 200KB
522 resources · 4.1 MiB · 207 third-party 3.1 MiB over 1MB target
JavaScript 56% · 2.3 MiB
Image 31% · 1.3 MiB
Document 5% · 191.0 KiB
CSS 4% · 162.3 KiB
Font 4% · 162.1 KiB
Other 1% · 47.4 KiB
~535.7 KiB of savings available
Remove unused JavaScript: 535.7 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 522 resources | 4.1 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization50 images, 0 KB saveableREVIEW
Image Optimization
50 images, 0 KB saveable
50 images, 0 KB saveable
Warning::
https://cdn.shopify.com/s/files/1/0975/5951/1343/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
50 images 1.3 MB
0 oversized -0 KB
3 legacy format
1 missing dimensions CLS risk
Set explicit width and height to prevent CLS.
Why this matters
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
Document Compression
ActionDocument response served uncompressed
Document response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
Main HTML Cache-Control
No Cache-Control header on main HTML response
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
AThird-Party Impact35% third-party, 0 ms blockingPASS
Third-Party Impact
35% third-party, 0 ms blocking
35% third-party, 0 ms blocking
Info::
Third-party code accounts for 35% of page weight (1.4 MiB of 4.1 MiB)
Info::
Third-party blocking time is low (0 ms)
65%
35%
First-party Third-party
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Font Loading5 fonts (162 KB)PASS
Font Loading
5 fonts (162 KB)
5 fonts (162 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
5
162 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
dmsans_n4.ec80bd4dd7e1a... woff2 swap
Size 26 KB
Load time 39 ms
Start 369 ms
Risk FOUT — text flashes from fallback to web font
playfairdisplay_n7.592b... woff2 swap
Size 25 KB
Load time 42 ms
Start 409 ms
Risk FOUT — text flashes from fallback to web font
anonymouspro_n4.f8892cc... woff2 swap
Size 23 KB
Load time 46 ms
Start 411 ms
Risk FOUT — text flashes from fallback to web font
GTStandard-MMedium.woff2 woff2 swap
Size 63 KB
Load time 25 ms
Start 2.5 s
Risk FOUT — text flashes from fallback to web font
dmsans_n7.97e21d8150200... woff2 swap
Size 26 KB
Load time 31 ms
Start 31.2 s
Risk FOUT — text flashes from fallback to web font
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
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+Asset CompressionAll 1 asset host use brotliPASS
Asset Compression
All 1 asset host use brotli
All 1 asset host use brotli
Info::
cdn.shopify.com serves assets with brotli (assets: 30)
Got: cdn.shopify.com (text/javascript)
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Server Response Intelligence1 server-response signal(s) detectedPASS
Server Response Intelligence
1 server-response signal(s) detected
1 server-response signal(s) detected
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall522 requests over 37371msINFO
Network Waterfall
522 requests over 37371ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
4% of JavaScript execution is third-party
First-party Third-party 285ms · 178KB · CA$2/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cdn.shopify.com cdn.shopify.com | Other | 105ms | 58 KB | 51% | CA$1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 96ms | 105 KB | 34% | CA$1/mo | Optional |
cdn.shopify.com cdn.shopify.com | Other | 83ms | 14 KB | — | CA$1/mo | Optional |
cdn.shopify.com
Other
Execution 105ms
Transfer 58 KB
Unused 51%
Monthly Cost CA$1/mo
Facebook Pixel
Advertising
Execution 96ms
Transfer 105 KB
Unused 34%
Monthly Cost CA$1/mo
cdn.shopify.com
Other
Execution 83ms
Transfer 14 KB
Monthly Cost CA$1/mo
51% of cdn.shopify.com's code is unused. The script may be loading features you don't use.
Why this matters
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
57 images, 990 KB total, 0 KB wasted
Image Optimization Audit
Total Images
57
Total Size
990 KB
1 missing alt text 1 missing dimensions 11 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.