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https://jaxslayher.tv

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
7
PASS
10
INFO
3

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

Mobile Desktop
53
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
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.

2.79 s

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

2.84 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.

0.272

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

3.39 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.

2.84 s

Page Load Progression

982 ms
2.0 s
2.9 s
3.9 s
4.9 s
5.9 s
6.9 s
7.9 s
Checks
22
10 PASS 7 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.1 MiB of 1.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
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.

No Cache-Control header

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

B
Page Weight Budget
1.1 MB transferred, 33 requests
REVIEW
1.1 MB transferred, 33 requests
Info::
Page weighs 1.7 MB (1.1 MB transferred)
Warning::
JavaScript is 652 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 652 KB
Info::
33 HTTP requests
Info::
Estimated 0.23 g CO2 per page load
1.1 MB / 2.4 MB budget
1.1 MB transferred
33 requests
0.23 g CO2 per page load
JavaScript 651.9 KiB 58%
Images 290.3 KiB 26%
CSS 74.2 KiB 7%
Fonts 45.0 KiB 4%
Other 42.8 KiB 4%
Other 16.6 KiB 1%
HTML 10.3 KiB 1%
0 2.4 MB 4.9 MB
Under 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

C
JS Bundles
Action
19 scripts, 254 KB unused
REVIEW
19 scripts, 254 KB unused
Warning::
https://jaxslayher.com/_next/static/chunks/442-530...: 75 KB unused (92%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-2P82...: 65 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://jaxslayher.com/_next/static/chunks/fd9d105...: 54 KB unused (34%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://jaxslayher.com/_next/static/chunks/864-976...: 37 KB unused (34%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://jaxslayher.com/_next/static/chunks/app/tou...: 23 KB unused (95%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 254 KB
254 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://jaxslayher.com/_next/static/chunks/442-53012fc3ae3e0068.js81 KB75 KB (92%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-2P8267HWQW160 KB65 KB (41%)✓3rd
https://jaxslayher.com/_next/static/chunks/fd9d1056-8ccaeadeeaf29e91.js160 KB54 KB (34%)✓3rd
https://jaxslayher.com/_next/static/chunks/864-976a44f4a7e551e8.js108 KB37 KB (34%)✓3rd
https://jaxslayher.com/_next/static/chunks/app/tour/layout-ef8cf17900c621c1.js24 KB23 KB (95%)✓3rd
https://jaxslayher.com/_next/static/chunks/app/layout-2d51c108c826f2c4.js9 KB—✓3rd
https://jaxslayher.com/_next/static/chunks/36-7e4f22a2416a21a7.js10 KB—✓3rd
https://jaxslayher.com/_next/static/chunks/app/page-a42d7bd73dfba87e.js2 KB—✓3rd
https://jaxslayher.com/_next/static/chunks/webpack-d23b2e19b9a17abb.js5 KB—✓3rd
https://jaxslayher.com/_next/static/chunks/125-cb274990d20fa811.js2 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

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
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
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
No Cache-Control header on main HTML response
REVIEW
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.
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.
B
Page Weight Inventory
33 resources · 1.1 MB · 254 KB savings available
REVIEW
33 resources · 1.1 MB · 254 KB savings available
Warning::
Page weight 1.1 MB exceeds 1 MB target by 107 KB
Got: 1.1 MB Expected: ≤ 1 MB
Info::
~254 KB of savings available
Warning::
32 third-party resources (100% of weight)
Info::
1 resources over 200KB
33 resources · 1.1 MiB · 32 third-party 107.1 KiB over 1MB target
JavaScript 58% · 651.9 KiB
Image 27% · 305.3 KiB
CSS 7% · 74.2 KiB
Font 4% · 45.0 KiB
Other 4% · 42.8 KiB
Document 1% · 11.9 KiB

~253.9 KiB of savings available

Remove unused JavaScript: 253.9 KiB
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
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 290 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
237ms total JS execution
PASS
237ms total JS execution
Info::
https://www.googletagmanager.com/gtag/js?id=G-2P82...: 107ms CPU time
Info::
Unattributable: 73ms CPU time
Info::
https://jaxslayher.com/?nats=Mi4xLjIuMy4xLjAuMC4wL...: 57ms CPU time
Warning::
Third-party scripts: 163ms (69% of total)

Main Thread Breakdown

Script Evaluation 52% Other 24% Script Parsing & Compilation 11% Style & Layout 10%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-2P8267HWQW107ms88ms17ms3rd
Unattributable73ms4ms0ms1st
https://jaxslayher.com/?nats=Mi4xLjIuMy4xLjAuMC4wLjA57ms3ms3ms3rd
A+
Font Loading
1 fonts (45 KB)
PASS
1 fonts (45 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

45 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.8 s LCP 2.8 shttps://fonts.gstatic.com/s/robotocondensed/v31/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQk6YvM.woff2ieVl2ZhZI2eCN5jzbjEETS9... https://fonts.gstatic.com/s/robotocondensed/v31/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQk6YvM.woff2 — 45.0 KiB — 16 ms — font-display: swap
ieVl2ZhZI2eCN5jzbjEETS9... woff2 swap
Size 45 KB
Load time 16 ms
Start 2.0 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 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+
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
1 server-response signal(s) detected
PASS
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 Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
33 requests over 11059ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 2.8 s LCP 2.8 shttps://jaxslayher.tv// https://jaxslayher.tv/ — 301 — 446 B — 21 ms — h3https://join.jaxslayher.com/track/Mi4xLjIuMy4xLjAuMC4wLjAjoin.jaxslayher.com/track/Mi4xLjIuM... https://join.jaxslayher.com/track/Mi4xLjIuMy4xLjAuMC4wLjA — 302 — 1.2 KiB — 825 ms — h2https://jaxslayher.com/?nats=Mi4xLjIuMy4xLjAuMC4wLjAjaxslayher.com/?nats=Mi4xLjIuMy4xLj... https://jaxslayher.com/?nats=Mi4xLjIuMy4xLjAuMC4wLjA — 200 — 10.3 KiB — 854 ms — http/1.1https://jaxslayher.com/_next/static/css/7146e346efc6ac24.cssjaxslayher.com/_next/static/css/714... https://jaxslayher.com/_next/static/css/7146e346efc6ac24.css — 200 — 11.5 KiB — 237 ms — http/1.1https://jaxslayher.com/_next/static/chunks/webpack-d23b2e19b9a17abb.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/webpack-d23b2e19b9a17abb.js — 200 — 4.7 KiB — 289 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-2P8267HWQWwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-2P8267HWQW — 200 — 159.8 KiB — 40 ms — h2https://jaxslayher.com/_next/static/chunks/fd9d1056-8ccaeadeeaf29e91.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/fd9d1056-8ccaeadeeaf29e91.js — 200 — 160.3 KiB — 3.6 s — http/1.1https://jaxslayher.com/_next/static/chunks/864-976a44f4a7e551e8.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/864-976a44f4a7e551e8.js — 200 — 108.1 KiB — 2.6 s — http/1.1https://jaxslayher.com/_next/static/chunks/main-app-1c0615638dc41446.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/main-app-1c0615638dc41446.js — 200 — 814 B — 765 ms — http/1.1https://fonts.googleapis.com/css2?family=M+PLUS+1+Code:wght@300;400&family=Roboto+Condensed:wght@300;400;700&display=swapfonts.googleapis.com/css2?family=M+... https://fonts.googleapis.com/css2?family=M+PLUS+1+Code:wght@300;400&family=Roboto+Condensed:wght@300;400;700&display=swap — 200 — 59.2 KiB — 46 ms — h2https://jaxslayher.com/_next/static/media/warning-page.829e3088.jpgjaxslayher.com/_next/static/media/w... https://jaxslayher.com/_next/static/media/warning-page.829e3088.jpg — 200 — 290.3 KiB — 5.6 s — http/1.1https://fonts.gstatic.com/s/robotocondensed/v31/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQk6YvM.woff2fonts.gstatic.com/s/robotocondensed... https://fonts.gstatic.com/s/robotocondensed/v31/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQk6YvM.woff2 — 200 — 45.0 KiB — 16 ms — h3https://jaxslayher.com/_next/static/chunks/724-c42d167e53473151.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/724-c42d167e53473151.js — 200 — 21.7 KiB — 523 ms — http/1.1https://jaxslayher.com/_next/static/chunks/964-45f62651df057534.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/964-45f62651df057534.js — 200 — 13.5 KiB — 245 ms — http/1.1https://jaxslayher.com/_next/static/chunks/app/page-a42d7bd73dfba87e.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/app/page-a42d7bd73dfba87e.js — 200 — 1.8 KiB — 284 ms — http/1.1https://jaxslayher.com/_next/static/chunks/app/layout-2d51c108c826f2c4.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/app/layout-2d51c108c826f2c4.js — 200 — 9.1 KiB — 287 ms — http/1.1https://www.google-analytics.com/g/collect?v=2&tid=G-2P8267HWQW&gtm=45je67d0v9168418187za200zd9168418187&_p=1784057598026&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=75284365.1784057598&frm=0&pscdl=noapi&rcb=5&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=115938466~115938469~118826209~118897920~118897930~119027224~119709549~119724320~119773332&sid=1784057598&sct=1&seg=0&dl=https%3A%2F%2Fjaxslayher.com%2F%3Fnats%3DMi4xLjIuMy4xLjAuMC4wLjA&dt=WARNING%2018%2B%20ADULT%20CONTENT%20AHEAD%20%7C%20JaxSlayher.com&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=6030www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-2P8267HWQW&gtm=45je67d0v9168418187za200zd9168418187&_p=1784057598026&gcd=13l3l3l3l1l1&npa=0&dma=0&are=1&cid=75284365.1784057598&frm=0&pscdl=noapi&rcb=5&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=115938466~115938469~118826209~118897920~118897930~119027224~119709549~119724320~119773332&sid=1784057598&sct=1&seg=0&dl=https%3A%2F%2Fjaxslayher.com%2F%3Fnats%3DMi4xLjIuMy4xLjAuMC4wLjA&dt=WARNING%2018%2B%20ADULT%20CONTENT%20AHEAD%20%7C%20JaxSlayher.com&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=6030 — 204 — 548 B — 22 ms — h2https://jaxslayher.com/tour.txt?_rsc=acgkzjaxslayher.com/tour.txt?_rsc=acgkz https://jaxslayher.com/tour.txt?_rsc=acgkz — 200 — 19.1 KiB — 530 ms — http/1.1https://jaxslayher.com/join.txt?_rsc=acgkzjaxslayher.com/join.txt?_rsc=acgkz https://jaxslayher.com/join.txt?_rsc=acgkz — 200 — 7.5 KiB — 260 ms — http/1.1https://jaxslayher.com/tour/2257.txt?_rsc=acgkzjaxslayher.com/tour/2257.txt?_rsc=a... https://jaxslayher.com/tour/2257.txt?_rsc=acgkz — 200 — 15.6 KiB — 525 ms — http/1.1https://jaxslayher.com/_next/static/css/17cffd0e6e1ede65.cssjaxslayher.com/_next/static/css/17c... https://jaxslayher.com/_next/static/css/17cffd0e6e1ede65.css — 200 — 3.5 KiB — 291 ms — http/1.1https://jaxslayher.com/_next/static/chunks/125-cb274990d20fa811.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/125-cb274990d20fa811.js — 200 — 1.6 KiB — 290 ms — http/1.1https://jaxslayher.com/_next/static/chunks/app/tour/layout-ef8cf17900c621c1.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/app/tour/layout-ef8cf17900c621c1.js — 200 — 24.5 KiB — 847 ms — http/1.1https://jaxslayher.com/_next/static/chunks/442-53012fc3ae3e0068.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/442-53012fc3ae3e0068.js — 200 — 81.1 KiB — 2.1 s — http/1.1https://jaxslayher.com/_next/static/chunks/36-7e4f22a2416a21a7.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/36-7e4f22a2416a21a7.js — 200 — 10.5 KiB — 1.3 s — http/1.1https://jaxslayher.com/_next/static/chunks/app/tour/page-4ef11d1448af24f3.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/app/tour/page-4ef11d1448af24f3.js — 200 — 8.9 KiB — 287 ms — http/1.1https://jaxslayher.com/_next/static/chunks/30a37ab2-8d0154040a44eb2a.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/30a37ab2-8d0154040a44eb2a.js — 200 — 2.9 KiB — 234 ms — http/1.1https://jaxslayher.com/_next/static/chunks/f97e080b-345e80a3e30bf27c.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/f97e080b-345e80a3e30bf27c.js — 200 — 791 B — 235 ms — http/1.1https://jaxslayher.com/_next/static/chunks/581-9ced72f2a234a062.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/581-9ced72f2a234a062.js — 200 — 20.5 KiB — 497 ms — http/1.1https://jaxslayher.com/_next/static/chunks/app/join/page-f23937a9faf85695.jsjaxslayher.com/_next/static/chunks/... https://jaxslayher.com/_next/static/chunks/app/join/page-f23937a9faf85695.js — 200 — 20.4 KiB — 522 ms — http/1.1
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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
69% of JavaScript execution is third-party
First-party Third-party 163ms · 170KB · $2/mo
Google Tag Manager
Tag Manager
Optional
Execution 107ms
Transfer 160 KB
Unused 41%
Monthly Cost $1/mo
jaxslayher.com
Other
Optional
Execution 57ms
Transfer 10 KB
Monthly Cost $1/mo

69% 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

Image Optimization
2 images, 290 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

2

Total Size

290 KB

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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