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https://emptyhammock.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
4
PASS
10
INFO
2

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

Mobile Desktop
67
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
69
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.
100
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.

3.98 s

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

6.00 s

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

153 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.

3.98 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.

6.00 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
17
10 PASS 4 REVIEW 1 FIX
D
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Third-Party Impact
56% third-party, 0 ms blocking
REVIEW
56% third-party, 0 ms blocking
Warning::
Third-party code accounts for 56% of page weight (296.8 KiB of 530.1 KiB)
Info::
Third-party blocking time is low (0 ms)
44%
56%
First-party Third-party
B
JS Execution Cost
647ms total JS execution
REVIEW
647ms total JS execution
Info::
https://www.googletagmanager.com/gtag/js?id=G-J7MN...: 198ms CPU time
Info::
Unattributable: 190ms CPU time
Info::
https://emptyhammock.com/vendor/materialize/js/mat...: 116ms CPU time
Info::
https://www.google-analytics.com/analytics.js: 76ms CPU time
Info::
https://emptyhammock.com/vendor/jquery/jquery-2.1....: 67ms CPU time
Warning::
Third-party scripts: 464ms (72% of total)

Main Thread Breakdown

Script Evaluation 51% Other 22% Style & Layout 13% Script Parsing & Compilation 11%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-J7MNVB218J&cx=c&_slc=1198ms147ms46ms3rd
Unattributable190ms71ms0ms3rd
https://emptyhammock.com/vendor/materialize/js/materialize.min.js116ms22ms14ms1st
https://www.google-analytics.com/analytics.js76ms52ms6ms3rd
https://emptyhammock.com/vendor/jquery/jquery-2.1.1.min.js67ms55ms7ms1st
B
JS Bundles
4 scripts, 105 KB unused
REVIEW
4 scripts, 105 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-J7MN...: 64 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://emptyhammock.com/vendor/materialize/js/mat...: 41 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 105 KB
105 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-J7MNVB218J&cx=c&_slc=1148 KB64 KB (43%)✓3rd
https://emptyhammock.com/vendor/materialize/js/materialize.min.js49 KB41 KB (83%)✓1st
https://emptyhammock.com/vendor/jquery/jquery-2.1.1.min.js29 KB—✓1st
https://www.google-analytics.com/analytics.js21 KB—✓3rd

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

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

Green Hosting

No green hosting detected

A+
Page Weight Budget
530 KB transferred, 14 requests
PASS
530 KB transferred, 14 requests
Info::
Page weighs 1.1 MB (530 KB transferred)
Info::
Fonts are 253 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 253 KB
Info::
14 HTTP requests
Info::
Estimated 0.11 g CO2 per page load
530 KB / 2.4 MB budget
530 KB transferred
14 requests
0.11 g CO2 per page load
Fonts 253.5 KiB 48%
JavaScript 247.9 KiB 47%
CSS 23.6 KiB 4%
HTML 2.4 KiB 0%
Other 1.7 KiB 0%
Other 550 B 0%
Other 466 B 0%
0 2.4 MB 4.9 MB
Under budget

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

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+
Image Optimization
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
3 fonts (253 KB)
PASS
3 fonts (253 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

253 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 4.0 s LCP 6.0 shttps://emptyhammock.com/vendor/materialize/fonts/roboto/Roboto-Regular.woff2Roboto-Regular.woff2 https://emptyhammock.com/vendor/materialize/fonts/roboto/Roboto-Regular.woff2 — 63.6 KiB — 98 ms — font-display: swaphttps://emptyhammock.com/vendor/materialize/fonts/roboto/Roboto-Medium.woff2Roboto-Medium.woff2 https://emptyhammock.com/vendor/materialize/fonts/roboto/Roboto-Medium.woff2 — 64.2 KiB — 291 ms — font-display: swaphttps://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2flUhRq6tzZclQEJ-Vdg-Iui... https://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2 — 125.6 KiB — 69 ms — font-display: swap
Roboto-Regular.woff2 woff2 swap
Size 64 KB
Load time 98 ms
Start 828 ms
Risk FOUT — text flashes from fallback to web font
Roboto-Medium.woff2 woff2 swap
Size 64 KB
Load time 291 ms
Start 828 ms
Risk FOUT — text flashes from fallback to web font
flUhRq6tzZclQEJ-Vdg-Iui... woff2 swap
Size 126 KB
Load time 69 ms
Start 829 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
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 ~63 KB and ~126 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A
Page Weight Inventory
14 resources · 530 KB · 105 KB savings available
PASS
14 resources · 530 KB · 105 KB savings available
Info::
Within 1MB page-weight target
Got: 530 KB
Info::
~105 KB of savings available
Warning::
6 third-party resources (56% of weight)
14 resources · 530.1 KiB · 6 third-party Within 1MB page-weight target
Font 48% · 253.5 KiB
JavaScript 47% · 247.9 KiB
CSS 4% · 23.6 KiB
Document 0% · 2.4 KiB
Image 0% · 1.7 KiB
Other 0% · 1016 B

~104.6 KiB of savings available

Remove unused JavaScript: 104.6 KiB
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
Network Waterfall
14 requests over 1316ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 4.0 s LCP 6.0 shttps://emptyhammock.com// https://emptyhammock.com/ — 200 — 2.4 KiB — 296 ms — http/1.1https://fonts.googleapis.com/icon?family=Material+Iconsfonts.googleapis.com/icon?family=Ma... https://fonts.googleapis.com/icon?family=Material+Icons — 200 — 817 B — 95 ms — h2https://emptyhammock.com/vendor/materialize/css/materialize.min.css/vendor/materialize/css/materialize... https://emptyhammock.com/vendor/materialize/css/materialize.min.css — 200 — 22.1 KiB — 196 ms — http/1.1https://emptyhammock.com/static/css/em.css?v=5/static/css/em.css?v=5 https://emptyhammock.com/static/css/em.css?v=5 — 200 — 747 B — 99 ms — http/1.1https://emptyhammock.com/vendor/jquery/jquery-2.1.1.min.js/vendor/jquery/jquery-2.1.1.min.js https://emptyhammock.com/vendor/jquery/jquery-2.1.1.min.js — 200 — 29.2 KiB — 298 ms — http/1.1https://emptyhammock.com/vendor/materialize/js/materialize.min.js/vendor/materialize/js/materialize.... https://emptyhammock.com/vendor/materialize/js/materialize.min.js — 200 — 49.3 KiB — 481 ms — http/1.1https://emptyhammock.com/vendor/materialize/fonts/roboto/Roboto-Regular.woff2/vendor/materialize/fonts/roboto/Ro... https://emptyhammock.com/vendor/materialize/fonts/roboto/Roboto-Regular.woff2 — 200 — 63.6 KiB — 98 ms — http/1.1https://emptyhammock.com/vendor/materialize/fonts/roboto/Roboto-Medium.woff2/vendor/materialize/fonts/roboto/Ro... https://emptyhammock.com/vendor/materialize/fonts/roboto/Roboto-Medium.woff2 — 200 — 64.2 KiB — 291 ms — http/1.1https://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2fonts.gstatic.com/s/materialicons/v... https://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2 — 200 — 125.6 KiB — 69 ms — h3https://www.google-analytics.com/analytics.jswww.google-analytics.com/analytics.... https://www.google-analytics.com/analytics.js — 200 — 20.9 KiB — 100 ms — h2https://www.google-analytics.com/j/collect?v=1&_v=j102&a=1487701809&t=pageview&_s=1&dl=https%3A%2F%2Femptyhammock.com%2F&ul=en-us&dt=Emptyhammock%20%E2%80%94%20Software%20Consulting&sr=412x823&vp=412x823&_u=IEBAAEABAAAAACAAI~&jid=2083108583&gjid=267610135&cid=421262152.1776806333&tid=UA-42532750-1&_gid=1456114091.1776806333&_r=1&_slc=1&z=1921338929www.google-analytics.com/j/collect?... https://www.google-analytics.com/j/collect?v=1&_v=j102&a=1487701809&t=pageview&_s=1&dl=https%3A%2F%2Femptyhammock.com%2F&ul=en-us&dt=Emptyhammock%20%E2%80%94%20Software%20Consulting&sr=412x823&vp=412x823&_u=IEBAAEABAAAAACAAI~&jid=2083108583&gjid=267610135&cid=421262152.1776806333&tid=UA-42532750-1&_gid=1456114091.1776806333&_r=1&_slc=1&z=1921338929 — 200 — 466 B — 26 ms — h2https://www.googletagmanager.com/gtag/js?id=G-J7MNVB218J&cx=c&_slc=1www.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-J7MNVB218J&cx=c&_slc=1 — 200 — 148.4 KiB — 156 ms — h2https://region1.google-analytics.com/g/collect?v=2&tid=G-J7MNVB218J&gtm=45je64h1v9125549266za20g&_p=1776806333341&gcd=13l3l3l2l2l1&npa=0&dma_cps=a&dma=1&_eu=EBAI&are=1&cid=421262152.1776806333&frm=0&ir=1&pscdl=noapi&rcb=7&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938468~117266401&dl=https%3A%2F%2Femptyhammock.com%2F&dt=Emptyhammock%20%E2%80%94%20Software%20Consulting&sid=1776806333&sct=1&seg=0&_tu=wAQ&en=page_view&_fv=1&_ss=1&_ee=1&tfd=1211region1.google-analytics.com/g/coll... https://region1.google-analytics.com/g/collect?v=2&tid=G-J7MNVB218J&gtm=45je64h1v9125549266za20g&_p=1776806333341&gcd=13l3l3l2l2l1&npa=0&dma_cps=a&dma=1&_eu=EBAI&are=1&cid=421262152.1776806333&frm=0&ir=1&pscdl=noapi&rcb=7&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938466~115938468~117266401&dl=https%3A%2F%2Femptyhammock.com%2F&dt=Emptyhammock%20%E2%80%94%20Software%20Consulting&sid=1776806333&sct=1&seg=0&_tu=wAQ&en=page_view&_fv=1&_ss=1&_ee=1&tfd=1211 — 204 — 550 B — 76 ms — h2https://emptyhammock.com/favicon.ico?v=1/favicon.ico?v=1 https://emptyhammock.com/favicon.ico?v=1 — 200 — 1.7 KiB — 99 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
72% of JavaScript execution is third-party
First-party Third-party 464ms · 169KB · $6/mo
Google Tag Manager
Tag Manager
Optional
Execution 198ms
Transfer 148 KB
Unused 43%
Monthly Cost $3/mo
Unattributable
Other
Optional
Execution 190ms
Transfer 0 KB
Monthly Cost $3/mo
Google Analytics
Analytics
Optional
Execution 76ms
Transfer 21 KB
Monthly Cost $1/mo

72% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

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

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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