Audit Result

UUID: 019e2c2d-4fac-716e-9ecb-dfb9c75adfb5

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www.jamluca.com

https://www.jamluca.com/

Scanned 3 months ago

81
Fair Score
39 total checks
Passed
26
Warnings
11
Errors
2

Meta Information

  • Title Tag Pass

    Found 51 characters. Length is optimal.

  • Meta Description Pass

    Found 130 characters. Good snippet length.

  • Canonical URL Pass

    Canonical found: https://www.jamluca.com

  • Favicon Pass

    Favicon found and reachable: /favicon.ico?favicon.05stva-6c7-66.ico (HTTP 200).

    Favicon
  • Viewport Meta Pass

    Viewport configured: width=device-width, initial-scale=1, maximum-scale=5

  • HTML Lang Pass

    Language declared as "ja".

Content Structure

  • H1 Tag Pass

    Exactly one H1 found: "クリエイティブを解放し自在に配信画面をデザインしよう".

  • Heading Hierarchy Pass

    Valid heading flow across 24 headings.

  • Image Alt Text Pass

    All 13 images include alt text.

Technical Optimization

  • HTTPS Pass

    Page is served over HTTPS.

  • HSTS & HTTPS Redirect Warning

    2 HTTPS hardening issues detected.

    • • HSTS is missing includeSubDomains.
    • • Could not probe the HTTP version of this page.
    • • Strict-Transport-Security: max-age=63072000

    Fix: Set Strict-Transport-Security with a long max-age, add includeSubDomains, and redirect all HTTP requests to HTTPS.

  • Security Headers Warning

    Missing: content-security-policy.

    Full HTTP headers (22)
    • • age: 0
    • • alt-svc: h3=":443"; ma=86400
    • • cache-control: private, no-cache, no-store, max-age=0, must-revalidate
    • • cf-cache-status: DYNAMIC
    • • cf-ray: 9fc30c4e2b1dd637-IAD
    • • content-encoding: zstd
    • • content-type: text/html; charset=utf-8
    • • date: Fri, 15 May 2026 15:06:42 GMT
    • • link: <https://www.jamluca.com/>; rel="alternate"; hreflang="ja", <https://www.jamluca.com/en>; rel="alternate"; hreflang="en", <https://www.jamluca.com/ko>; rel="alternate"; hreflang="ko", <https://www.jamluca.com/id>; rel="alternate"; hreflang="id", <https://www.jamluca.com/th>; rel="alternate"; hreflang="th", <https://www.jamluca.com/>; rel="alternate"; hreflang="x-default" </_next/static/media/03ab014d3b478c8d-s.p.0n_nv395uzas2.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/media/187adc786b7e1160-s.p.0in4_cpvkw.yv.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </marshmallow-logo.png>; rel=preload; as="image"
    • • nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
    • • permissions-policy: camera=(), microphone=(), geolocation=()
    • • referrer-policy: strict-origin-when-cross-origin
    • • report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=Kv5TYA3h6vfnADD%2FFA3S7A2fhbwiFWDm2T5Q4W7MAZgJh6ZhRjZ1JBPjhqqUG1q5XX4d0qLnqzVhNUFR3WAQyXheJy5YDAXTGGI5fZm6VGLVoRao2eZyHuTXrYNQ%2FESPTmBk0bbYl7gh68khT6A%3D"}]}
    • • server: cloudflare
    • • server-timing: cfCacheStatus;desc="DYNAMIC" cfEdge;dur=20,cfOrigin;dur=361
    • • strict-transport-security: max-age=63072000
    • • vary: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch accept-encoding
    • • x-content-type-options: nosniff
    • • x-frame-options: DENY
    • • x-matched-path: /[locale]
    • • x-vercel-cache: MISS
    • • x-vercel-id: iad1::hnd1::lf897-1778857602289-0c85d7dc6f0f

    Fix: Add the missing security headers at your reverse proxy or application layer.

  • CSP Quality Warning

    Content-Security-Policy header is missing.

    • • Missing Content-Security-Policy header.

    Fix: Define a restrictive Content-Security-Policy and avoid unsafe directives such as unsafe-inline and unsafe-eval.

  • Cookie Security Pass

    No first-party cookies were set during the initial page load.

  • Server Version Disclosure Pass

    Server response headers do not expose version tokens.

  • Cloudflare Proxy Pass

    Domain appears to be behind Cloudflare.

    • • server: cloudflare
    • • cf-cache-status: DYNAMIC
    • • cf-ray: 9fc30c4e2b1dd637-IAD
  • Perceived Load Time Pass

    Loaded in 0.79s (perceived).

  • Render Blocking Resources Warning

    31 scripts and 6 styles may block rendering.

    • • script: https://www.jamluca.com/_next/static/chunks/03~yq9q893hmn.js
    • • script: https://eu-assets.i.posthog.com/static/web-vitals.js?v=1.372.3
    • • script: https://eu-assets.i.posthog.com/static/exception-autocapture.js?v=1.372.3
    • • script: https://eu-assets.i.posthog.com/array/phc_tqQq5XRReR2Zu9Tu5oHJf2WgMRyDv9W6g79F7858Lr48/config.js
    • • script: https://www.jamluca.com/_next/static/chunks/0vcsw5o6f~8ns.js
    • • script: https://www.jamluca.com/_next/static/chunks/0gr.gdk9.qbmp.js
    • • script: https://www.jamluca.com/_next/static/chunks/0wqlrtpwxn9u_.js
    • • script: https://www.jamluca.com/_next/static/chunks/15fdmcod8k6y7.js
    • • script: https://www.jamluca.com/_next/static/chunks/0yhxxl-3eeb4p.js
    • • script: https://www.jamluca.com/_next/static/chunks/15r-0kavard.i.js
    • • script: https://www.jamluca.com/_next/static/chunks/0hzwr-e_4nm~2.js
    • • script: https://www.jamluca.com/_next/static/chunks/034w2ab7r1cd_.js
    • • script: https://www.jamluca.com/_next/static/chunks/04sb3ht2pti1m.js
    • • script: https://www.jamluca.com/_next/static/chunks/0m07o6hmbr9o3.js
    • • script: https://www.jamluca.com/_next/static/chunks/0ao5m-65c7621.js
    • • script: https://www.jamluca.com/_next/static/chunks/07szno6a51uzz.js
    • • script: https://www.jamluca.com/_next/static/chunks/0ocpx~3ymx81p.js
    • • script: https://www.jamluca.com/_next/static/chunks/0ys0i1c-cvovk.js
    • • script: https://www.jamluca.com/_next/static/chunks/0px7ds9crmdad.js
    • • script: https://www.jamluca.com/_next/static/chunks/10mx05u1po86c.js
    • • script: https://www.jamluca.com/_next/static/chunks/011dv1jquacf~.js
    • • script: https://www.jamluca.com/_next/static/chunks/155yf0327qp7s.js
    • • script: https://www.jamluca.com/_next/static/chunks/0~c4b2vf.dj27.js
    • • script: https://www.jamluca.com/_next/static/chunks/00mp4xrwfng12.js
    • • script: https://www.jamluca.com/_next/static/chunks/0a4ujn549h1mr.js
    • • script: https://www.jamluca.com/_next/static/chunks/0msqr1t84y01a.js
    • • script: https://www.jamluca.com/_next/static/chunks/0bl6yr4v64_iy.js
    • • script: https://www.jamluca.com/_next/static/chunks/15jpzm~nuzfzl.js
    • • script: https://www.jamluca.com/_next/static/chunks/0vt5347s4c74-.js
    • • script: https://www.jamluca.com/_next/static/chunks/017yw56naimcc.js
    • • script: https://www.jamluca.com/_next/static/chunks/0ml_vjaz_myzs.js
    • • style: https://www.jamluca.com/_next/static/chunks/0zvjbuihw.n4w.css
    • • style: https://www.jamluca.com/_next/static/chunks/0~qz6b-w3pd30.css
    • • style: https://www.jamluca.com/_next/static/chunks/11k0ery-42rq-.css
    • • style: https://www.jamluca.com/_next/static/chunks/0v17cno_gpi-n.css
    • • style: https://www.jamluca.com/_next/static/chunks/184..medgm575.css
    • • style: https://accounts.google.com/gsi/style

    Fix: Defer non-critical scripts and inline critical CSS to improve first paint speed.

  • Compression Warning

    1 text resources look uncompressed.

    • • https://www.jamluca.com/api/relay?o=4506819282337792&p=4506819304292352 (application/json)

    Fix: Enable Brotli or Gzip compression for HTML, CSS, JS, and JSON responses.

  • Robots.txt Pass

    Found robots.txt (200).

  • Sitemap File Pass

    Found sitemap (200) at https://www.jamluca.com/sitemap.xml.

  • Crawl Directives Warning

    No robots meta tag defined.

    Fix: Add <meta name="robots" content="index,follow"> (or the intended directive) in <head>.

Accessibility Basics

  • Form Labels Error

    1 of 11 controls are missing labels.

    • • input#language-switcher.m_8fb7ebe7.mantine-Input-input (language-switcher)

    Fix: Associate each form control with a visible label, aria-label, or aria-labelledby.

  • Landmarks Warning

    Missing landmarks: header.

    Fix: Use semantic regions (<header>, <nav>, <main>, <footer>) for navigation and assistive tech.

  • Tap Target Size Warning

    23 interactive elements appear smaller than 48px.

    • • button#mantine-zhlrr5ycz.mantine-focus-auto.mantine-active (Language) - 34x34px
    • • a (ログイン / 新規登録) - 165x36px
    • • button.mantine-focus-auto.mantine-active (ログイン / 新規登録) - 165x36px
    • • button.mantine-focus-auto.m_80b4b171 - 15x11px
    • • button.mantine-focus-auto.m_80b4b171 - 15x11px
    • • button.mantine-focus-auto.m_80b4b171 - 15x11px
    • • button.mantine-focus-auto.m_80b4b171 - 15x11px
    • • button.mantine-focus-auto.m_80b4b171 - 15x11px
    • • button.mantine-focus-auto.m_80b4b171 - 15x11px
    • • button.mantine-focus-auto.mantine-active (リセット) - 58x22px
    • • button.mantine-focus-auto.mantine-active (スタート) - 58x22px
    • • button.mantine-focus-auto.mantine-active (リセット) - 66x25px
    • • button.mantine-focus-auto.mantine-active (スタート) - 66x25px
    • • button.mantine-focus-auto.mantine-active (minus) - 25x25px
    • • button.mantine-focus-auto.m_80b4b171 - 17x12px
    • • button.mantine-focus-auto.m_80b4b171 - 17x12px
    • • button.mantine-focus-auto.mantine-active (plus) - 25x25px
    • • a.text-inherit.no-underline (Jamluca) - 273x32px
    • • a.mantine-focus-auto.mantine-active (X (Twitter)) - 34x34px
    • • a.mantine-focus-auto.mantine-active (YouTube) - 34x34px
    • • a.mantine-focus-auto.mantine-active (マシュマロ) - 34x34px
    • • button.mantine-focus-auto.mantine-active (setLightColorScheme) - 34x34px
    • • button.mantine-focus-auto.mantine-active (setDarkColorScheme) - 34x34px

    Fix: Increase target size to at least 48x48 CSS pixels for touch interactions.

Social & Rich Results

  • Open Graph Basics Pass

    Core Open Graph tags are present.

  • Open Graph Image Pass

    og:image is present and absolute.

    Open Graph Image
  • Twitter Card Pass

    twitter:card set to summary_large_image.

  • Structured Data Pass

    JSON-LD schema detected.

  • PWA Metadata Warning

    Manifest or Apple touch icon is missing.

    Fix: Link your web app manifest and apple-touch-icon for improved install/share experiences.

  • Open Graph/Twitter Quality Pass

    Social preview metadata and image quality look good for Open Graph/Twitter.

    • • GUIDELINE: Optimal og:title length: 40-60 characters (acceptable: 10-70).
    • • GUIDELINE: Optimal og:description length: 110-160 characters (acceptable: 50-200).
    • • GUIDELINE: Optimal preview image size: 1200x630 pixels.
    • • GUIDELINE: Optimal preview image aspect ratio: 1.91:1.
    • • GUIDELINE: Optimal preview image file size: under 5 MB.
    • • GUIDELINE: Recommended twitter:card: summary_large_image.
    • • MEASURED: Image size: 0.01 MB
    • • MEASURED: Image dimensions: 1200x630

Links Analysis

  • Internal Links Pass

    Checked 25 links. No broken internal links found.

  • External Links Warning

    1 external links returned errors or timed out.

    • • https://marshmallow-qa.com/wfczgvmu0gg6qzk (HTTP 403)

    Fix: Replace dead external URLs or point to working alternatives.

  • Link Format Pass

    All 34 links use non-empty href values.

Performance & Runtime

  • Core Web Vitals: LCP Pass

    Largest Contentful Paint: 0.79s.

  • Core Web Vitals: CLS Pass

    Cumulative Layout Shift: 0.001.

  • Main Thread Blocking (TBT) Error

    Total Blocking Time estimate: 7176ms.

    Fix: Reduce heavy JavaScript work, split long tasks, and defer non-critical scripts.

  • Broken Assets Pass

    No failed CSS/JS/image/font/media requests detected.

  • JavaScript Runtime Errors Warning

    2 JavaScript runtime issues detected.

    • • Provider's accounts list is empty. [https://www.jamluca.com/:1]
    • • [GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token. [https://www.jamluca.com/_next/static/chunks/08.11_vkslfcy.js:10]

    Fix: Fix JS files returning 404/failed requests and resolve the listed runtime exceptions.