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Performance

· 16 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
3
REVIEW
2
PASS
9
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
42
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
89
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

15.77 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

15.77 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

499 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.003

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

30.48 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.

103.91 s

Page Load Progression

691 ms
1.4 s
2.1 s
2.8 s
3.5 s
4.1 s
4.8 s
5.5 s
Checks
16
9 PASS 2 REVIEW 3 FIX
F
Page Weight Budget
Action
45.1 MB transferred, 147 requests
FIX
45.1 MB transferred, 147 requests
Critical::
Page weighs 55.3 MB (45.1 MB transferred)
Warning::
Images are 29.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 29.7 MB
Warning::
JavaScript is 2.1 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.1 MB
Info::
Fonts are 1.1 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 1.1 MB
Warning::
147 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 9.4 g CO2 per page load
45.1 MB / 2.4 MB budget
45.1 MB transferred
147 requests
9.4 g CO2 per page load
Images 29.7 MiB 66%
Other 11.8 MiB 26%
JavaScript 2.1 MiB 5%
Fonts 1.1 MiB 2%
HTML 194.9 KiB 0%
CSS 160.0 KiB 0%
Other 38.2 KiB 0%
Other 27.1 KiB 0%
Other 2.3 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

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

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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

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.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

F
JS Execution Cost
Action
9239ms total JS execution
FIX
9239ms total JS execution
Warning::
Unattributable: 3782ms CPU time
Warning::
https://www.docker.com/: 3136ms CPU time
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 551ms CPU time
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-WL2...: 329ms CPU time
Warning::
https://cdn.cookielaw.org/scripttemplates/202306.2...: 323ms CPU time
Warning::
Third-party scripts: 5569ms (60% of total)

Main Thread Breakdown

Other 44% Script Evaluation 32% Style & Layout 12% Rendering 4% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
Unattributable3782ms174ms0ms3rd
https://www.docker.com/3136ms997ms38ms1st
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js551ms404ms86ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WL2QLG5329ms257ms61ms3rd
https://cdn.cookielaw.org/scripttemplates/202306.2.0/otBannerSdk.js323ms195ms48ms3rd
https://js-agent.newrelic.com/nr-spa-1.312.1.min.js261ms231ms10ms3rd
https://www.docker.com/app/themes/Ponyo/dist/js/index.js?ver=342915518c6a51894837224ms179ms32ms1st
https://assets.adobedtm.com/ba6d3e7c167e/6bf3c6b5f665/launch-55e2612a4c37.min.js210ms172ms32ms3rd
https://www.docker.com/app/themes/Ponyo/dist/js/ponyo.js?ver=308081ab31238164a132177ms78ms0ms1st
https://www.docker.com/wp/wp-includes/js/jquery/jquery.min.js?ver=3.7.168ms45ms11ms1st

Showing top 10 of 13 scripts

F
JS Bundles
Action
64 scripts, 819 KB unused
FIX
64 scripts, 819 KB unused
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/kUYUkUl...: 179 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-WL2...: 82 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.docker.com/app/themes/Ponyo/dist/js/in...: 82 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 819 KB
819 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js0 KB179 KB (49%)✓3rd
https://www.gstatic.com/recaptcha/releases/kUYUkUlSyqkjTSMaN2w3RaOh/recaptcha__en.js363 KB179 KB (49%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WL2QLG5167 KB82 KB (49%)✓3rd
https://www.docker.com/app/themes/Ponyo/dist/js/index.js?ver=342915518c6a51894837122 KB82 KB (67%)✓1st
https://cdn.cookielaw.org/scripttemplates/202306.2.0/otBannerSdk.js98 KB50 KB (52%)✓3rd
https://assets.adobedtm.com/ba6d3e7c167e/6bf3c6b5f665/launch-55e2612a4c37.min.js84 KB44 KB (53%)✓3rd
https://www.docker.com/wp/wp-includes/js/jquery/jquery.min.js?ver=3.7.135 KB23 KB (68%)✓1st
https://www.docker.com/app/plugins/syntaxhighlighter/syntaxhighlighter3/scripts/shBrushPlain.js?ver=3.0.9b1 KB—✓1st
https://www.docker.com/app/plugins/syntaxhighlighter/third-party-brushes/shBrushR.js?ver=201009191 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

B
Image Optimization
37 images, 0 KB saveable
REVIEW
37 images, 0 KB saveable
Warning::
https://www.docker.com/app/uploads/2024/01/icon-ne... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
37 images 29.7 MB
0 oversized -0 KB
20 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
5% third-party, 0 ms blocking
PASS
5% third-party, 0 ms blocking
Info::
Third-party code accounts for 5% of page weight (2.3 MiB of 45.1 MiB)
Info::
Third-party blocking time is low (0 ms)
95%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
8 fonts (1099 KB)
PASS
8 fonts (1099 KB)
Info::
8 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

8

1099 KB total

Render-blocking

0

of 8

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 15.8 s LCP 15.8 shttps://www.docker.com/app/themes/Ponyo/dist/fonts/Inter-Bold.88fa7ae3.ttfInter-Bold.88fa7ae3.ttf https://www.docker.com/app/themes/Ponyo/dist/fonts/Inter-Bold.88fa7ae3.ttf — 162.2 KiB — 0 ms — font-display: swaphttps://www.docker.com/app/themes/Ponyo/dist/fonts/Inter-Medium.6dcbc9be.ttfInter-Medium.6dcbc9be.ttf https://www.docker.com/app/themes/Ponyo/dist/fonts/Inter-Medium.6dcbc9be.ttf — 160.6 KiB — 0 ms — font-display: swaphttps://www.docker.com/app/themes/Ponyo/dist/fonts/Inter-Regular.e89cb199.ttfInter-Regular.e89cb199.ttf https://www.docker.com/app/themes/Ponyo/dist/fonts/Inter-Regular.e89cb199.ttf — 151.9 KiB — 0 ms — font-display: swaphttps://www.docker.com/app/themes/Ponyo/dist/fonts/Inter-SemiBold.4d56bb21.ttfInter-SemiBold.4d56bb21... https://www.docker.com/app/themes/Ponyo/dist/fonts/Inter-SemiBold.4d56bb21.ttf — 161.8 KiB — 0 ms — font-display: swaphttps://www.docker.com/app/themes/Ponyo/dist/fonts/ABCRepro-Medium.2e19b89f.woff2ABCRepro-Medium.2e19b89... https://www.docker.com/app/themes/Ponyo/dist/fonts/ABCRepro-Medium.2e19b89f.woff2 — 195.2 KiB — 0 ms — font-display: swaphttps://www.docker.com/app/themes/Ponyo/dist/fonts/ABCRepro-Bold.fe39dde5.woff2ABCRepro-Bold.fe39dde5.... https://www.docker.com/app/themes/Ponyo/dist/fonts/ABCRepro-Bold.fe39dde5.woff2 — 199.2 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 0 ms — font-display: swap
Inter-Bold.88fa7ae3.ttf ttf swap
Size 162 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Inter-Medium.6dcbc9be.ttf ttf swap
Size 161 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Inter-Regular.e89cb199.ttf ttf swap
Size 152 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Inter-SemiBold.4d56bb21... ttf swap
Size 162 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
ABCRepro-Medium.2e19b89... woff2 swap
Size 195 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
ABCRepro-Bold.fe39dde5.... woff2 swap
Size 199 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 0 ms
Start 0 ms
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)

Fixing the unchecked items could save ~706 KB and ~1412 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
Page uses 1 resource hint(s)

Current Resource Hints

preconnect
—
preload
—
dns-prefetch
1
prefetch
—

1 resource hints configured

A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A
HTTP Caching
max-age=604800 (1 week)
PASS
max-age=604800 (1 week)
Info::
Cache-Control header is set
Got: public, max-age=604800
Info::
Effective TTL: 1 week (max-age=604800)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=604800

DirectiveValueMeaning
public—Any cache may store this response
max-age604800Cache for 1 week
Effective TTL: 604800 seconds
Network Waterfall
147 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
60% of JavaScript execution is third-party
First-party Third-party 5569ms · 399KB · $74/mo
Unattributable
Other
Costly
Execution 3782ms
Transfer 0 KB
Monthly Cost $50/mo
www.gstatic.com
Other
Costly
Execution 551ms
Transfer 0 KB
Unused 49%
Monthly Cost $7/mo
Google Tag Manager
Tag Manager
Costly
Execution 329ms
Transfer 167 KB
Unused 49%
Monthly Cost $4/mo
OneTrust
Consent
Essential
Execution 323ms
Transfer 98 KB
Unused 52%
Monthly Cost $4/mo
js-agent.newrelic.com
Other
Costly
Execution 261ms
Transfer 30 KB
Monthly Cost $3/mo
assets.adobedtm.com
Other
Costly
Execution 210ms
Transfer 84 KB
Unused 53%
Monthly Cost $3/mo
www.youtube.com
Other
Optional
Execution 58ms
Transfer 11 KB
Monthly Cost $1/mo
OneTrust
Consent
Essential
Execution 55ms
Transfer 9 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 3782ms and costs ~$50/month
  • www.gstatic.com adds 551ms and costs ~$7/month
  • Google Tag Manager adds 329ms and costs ~$4/month
  • js-agent.newrelic.com adds 261ms and costs ~$3/month
  • assets.adobedtm.com adds 210ms and costs ~$3/month

60% of JavaScript execution time comes from third-party scripts.

Why this matters

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

Unattributable takes 3782ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.gstatic.com takes 551ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Google Tag Manager takes 329ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

52% of OneTrust'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

js-agent.newrelic.com takes 261ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

assets.adobedtm.com takes 210ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

53% of assets.adobedtm.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

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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