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Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
1
REVIEW
6
PASS
12
INFO
3

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

Mobile Desktop
97
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
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.

932 ms

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

1.09 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.

0.000

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

932 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.09 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
22
12 PASS 6 REVIEW 1 FIX
F
JS Bundles
Action
2 scripts, 343 KB unused
FIX
2 scripts, 343 KB unused
Warning::
https://fantasyteamadvice.com/assets/application-4...: 272 KB unused (84%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://fantasyteamadvice.com/assets/application-4...: unminified — 90 KB could be saved
Warning::
https://accounts.google.com/gsi/client: 72 KB unused (75%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 343 KB
343 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://fantasyteamadvice.com/assets/application-4d48e3e3acd4e131e01be126aecaa727dcf77d0a1fb967e2d1daa14f69b0e531.js324 KB272 KB (84%)✗1st
https://accounts.google.com/gsi/client96 KB72 KB (75%)✓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

B
Page Weight Budget
1.3 MB transferred, 10 requests
REVIEW
1.3 MB transferred, 10 requests
Info::
Page weighs 3.1 MB (1.3 MB transferred)
Info::
10 HTTP requests
Info::
Estimated 0.27 g CO2 per page load
1.3 MB / 2.4 MB budget
1.3 MB transferred
10 requests
0.27 g CO2 per page load
Other 579.7 KiB 43%
JavaScript 420.5 KiB 31%
Images 261.5 KiB 20%
CSS 54.9 KiB 4%
HTML 19.5 KiB 1%
0 2.4 MB 4.9 MB
Under budget
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main 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.
B
Main HTML Cache-Control
Main HTML max-age=3600 (~60min)
REVIEW
Main HTML max-age=3600 (~60min)
Info::
Main HTML cached for 60 minutes -- mild staleness risk
Got: max-age=3600, public, s-maxage=14400
B
Server-Timing Observability
No Server-Timing header found
REVIEW
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.
C
Page Weight Inventory
Action
10 resources · 1.3 MB · 343 KB savings available
REVIEW
10 resources · 1.3 MB · 343 KB savings available
Warning::
Page weight 1.3 MB exceeds 1 MB target by 312 KB
Got: 1.3 MB Expected: ≤ 1 MB
Info::
~343 KB of savings available
Info::
3 third-party resources (7% of weight)
Info::
2 resources over 200KB
10 resources · 1.3 MiB · 3 third-party 312.2 KiB over 1MB target
Image 63% · 841.2 KiB
JavaScript 31% · 420.5 KiB
CSS 4% · 54.9 KiB
Document 1% · 19.5 KiB

~343.4 KiB of savings available

Remove unused JavaScript: 343.4 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
7% third-party, 0 ms blocking
PASS
7% third-party, 0 ms blocking
Info::
Third-party code accounts for 7% of page weight (98.2 KiB of 1.3 MiB)
Info::
Third-party blocking time is low (0 ms)
93%
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
Image Optimization
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 261 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
198ms total JS execution
PASS
198ms total JS execution
Info::
Unattributable: 86ms CPU time
Info::
https://fantasyteamadvice.com/: 59ms CPU time
Info::
https://fantasyteamadvice.com/assets/application-4...: 54ms CPU time
Info::
Third-party scripts: 86ms (43% of total)

Main Thread Breakdown

Other 43% Script Evaluation 25% Style & Layout 21% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
Unattributable86ms2ms0ms3rd
https://fantasyteamadvice.com/59ms2ms0ms1st
https://fantasyteamadvice.com/assets/application-4d48e3e3acd4e131e01be126aecaa727dcf77d0a1fb967e2d1daa14f69b0e531.js54ms45ms2ms1st
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
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+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
`ETag` present -- conditional GET supported
A+
HTTP Caching
max-age=3600 (1 hour)
PASS
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: max-age=3600, public, s-maxage=14400
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
CDN TTL: 4 hours (s-maxage=14400)
Info::
ETag present — enables conditional (304) responses
Cache-Control

max-age=3600, public, s-maxage=14400

DirectiveValueMeaning
max-age3600Cache for 1 hour
public—Any cache may store this response
s-maxage14400CDN caches for 4 hours
Effective TTL: 3600 seconds
Network Waterfall
10 requests over 1226ms
INFO
0 ms 500 ms 1.0 s FCP 932 ms LCP 1.1 shttps://fantasyteamadvice.com// https://fantasyteamadvice.com/ — 200 — 19.5 KiB — 243 ms — h2https://fantasyteamadvice.com/assets/tailwind-cfe401d50e97e8a89076488ffae6778f3e6039eb61e83cb1cb2fcae9342723a2.css/assets/tailwind-cfe401d50e97e8a890... https://fantasyteamadvice.com/assets/tailwind-cfe401d50e97e8a89076488ffae6778f3e6039eb61e83cb1cb2fcae9342723a2.css — 200 — 53.0 KiB — 194 ms — h2https://fantasyteamadvice.com/assets/application-4d48e3e3acd4e131e01be126aecaa727dcf77d0a1fb967e2d1daa14f69b0e531.js/assets/application-4d48e3e3acd4e13... https://fantasyteamadvice.com/assets/application-4d48e3e3acd4e131e01be126aecaa727dcf77d0a1fb967e2d1daa14f69b0e531.js — 200 — 324.2 KiB — 327 ms — h2https://fantasyteamadvice.com/assets/baseball-stadium-28ce5dfe477b26c12a7c2a5636f36f12453944ea8477fef9cf646a799e86741c.jpeg/assets/baseball-stadium-28ce5dfe47... https://fantasyteamadvice.com/assets/baseball-stadium-28ce5dfe477b26c12a7c2a5636f36f12453944ea8477fef9cf646a799e86741c.jpeg — 200 — 187.6 KiB — 323 ms — h2https://fantasyteamadvice.com/assets/ftaMiniLogo-20d4b6166dd7860c0005fea1f06422c0eb883682979ba053b795a6ebee36e68b.png/assets/ftaMiniLogo-20d4b6166dd7860... https://fantasyteamadvice.com/assets/ftaMiniLogo-20d4b6166dd7860c0005fea1f06422c0eb883682979ba053b795a6ebee36e68b.png — 200 — 4.8 KiB — 198 ms — h3https://fonts.googleapis.com/css2?family=Inter:wght@500;600;700;800;900&display=swapfonts.googleapis.com/css2?family=In... https://fonts.googleapis.com/css2?family=Inter:wght@500;600;700;800;900&display=swap — 200 — 1.2 KiB — 141 ms — h2https://fantasyteamadvice.com/assets/DFSWinningLineup-fe2df64aefec2e193b8cbe06eac36e9c2ac5e410ac08d666e5e61b1ada3d96cf.png/assets/DFSWinningLineup-fe2df64aef... https://fantasyteamadvice.com/assets/DFSWinningLineup-fe2df64aefec2e193b8cbe06eac36e9c2ac5e410ac08d666e5e61b1ada3d96cf.png — 200 — 69.1 KiB — 186 ms — h3https://accounts.google.com/gsi/clientaccounts.google.com/gsi/client https://accounts.google.com/gsi/client — 200 — 96.3 KiB — 207 ms — h2https://accounts.google.com/gsi/styleaccounts.google.com/gsi/style https://accounts.google.com/gsi/style — 200 — 667 B — 44 ms — h2https://fantasyteamadvice.com/favicon.ico/favicon.ico https://fantasyteamadvice.com/favicon.ico — 200 — 579.7 KiB — 264 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
43% of JavaScript execution is third-party
First-party Third-party 86ms · 0KB · $1/mo
Unattributable
Other
Optional
Execution 86ms
Transfer 0 KB
Monthly Cost $1/mo

43% 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

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-04-11 — 2026-05-08)

LCP (p75)

1374 ms

93% good

INP (p75)

107 ms

89% good

CLS (p75)

0.000

98% good

FCP (p75)

1364 ms

TTFB (p75)

619 ms

This origin passes Core Web Vitals assessment
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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