Audit Result

UUID: 019f8e72-d82b-72b8-925c-ece0b23a816b

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nahean.vercel.app

https://nahean.vercel.app/

Scanned 1 month ago

73
Fair Score
39 total checks
Passed
21
Warnings
15
Errors
3

Meta Information

  • Title Tag Pass

    Found 56 characters. Length is optimal.

  • Meta Description Pass

    Found 82 characters. Good snippet length.

  • Canonical URL Warning

    Canonical link not found.

    Fix: Add <link rel="canonical" href="https://example.com/page"> to avoid duplicate URL ambiguity.

  • Favicon Pass

    Favicon found and reachable: /favicon.ico (HTTP 200).

    Favicon
  • Viewport Meta Pass

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

  • HTML Lang Pass

    Language declared as "en".

Content Structure

  • H1 Tag Warning

    Found 2 H1 tags.

    Fix: Use a single, descriptive <h1> that states the primary purpose of the page.

  • Heading Hierarchy Warning

    Detected 3 heading level jumps.

    • • Skipped from h1 to h3: "Nahean Fardous" -> "Value Proposition".
    • • Skipped from h2 to h5: "Sequence Analysis Dashboard" -> "GC Content".
    • • Skipped from h1 to h5: "0%" -> "Reverse Complement".

    Fix: Follow semantic order (h1 -> h2 -> h3) and avoid skipping heading levels.

  • Image Alt Text Pass

    All 26 images include alt text.

Technical Optimization

  • HTTPS Pass

    Page is served over HTTPS.

  • HSTS & HTTPS Redirect Warning

    1 HTTPS hardening issues detected.

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

    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, x-frame-options, x-content-type-options, referrer-policy.

    Full HTTP headers (15)
    • • age: 4
    • • cache-control: public, max-age=0, must-revalidate
    • • content-encoding: br
    • • content-type: text/html; charset=utf-8
    • • date: Thu, 23 Jul 2026 10:07:08 GMT
    • • etag: W/"113lj8f7caz808w"
    • • server: Vercel
    • • strict-transport-security: max-age=63072000; includeSubDomains; preload
    • • vary: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch
    • • x-matched-path: /
    • • x-nextjs-prerender: 1
    • • x-nextjs-stale-time: 300
    • • x-powered-by: Next.js
    • • x-vercel-cache: HIT
    • • x-vercel-id: iad1::iad1::qksx2-1784801307099-4b4edc39b931

    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 Warning

    Domain does not appear to be behind Cloudflare.

  • Perceived Load Time Pass

    Loaded in 0.65s (perceived).

  • Render Blocking Resources Warning

    1 scripts and 3 styles may block rendering.

    • • script: https://nahean.vercel.app/_next/static/chunks/polyfills-42372ed130431b0a.js
    • • style: https://nahean.vercel.app/_next/static/css/de70bee13400563f.css
    • • style: https://nahean.vercel.app/_next/static/css/def7ba42564b54c4.css
    • • style: https://nahean.vercel.app/_next/static/css/ca1bd6a856a82933.css

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

  • Compression Warning

    4 text resources look uncompressed.

    • • https://nahean.vercel.app/_next/static/chunks/app/(main)/layout-ffdbcb9ffd556839.js (application/javascript; charset=utf-8)
    • • blob:https://nahean.vercel.app/4d2f34f6-0488-446e-aa14-256348165a07 (text/javascript)
    • • https://nahean.vercel.app/_next/static/chunks/app/(main)/blog/page-2d4850bb491fe27f.js (application/javascript; charset=utf-8)
    • • https://nahean.vercel.app/_next/static/chunks/app/(main)/components/page-c95fb37ff60aefe1.js (application/javascript; charset=utf-8)

    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://nahean.vercel.app/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 1 controls are missing labels.

    • • textarea.border-input.placeholder:text-muted-foreground (ATGC...)

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

  • Landmarks Pass

    Header, nav, main, and footer landmarks are present.

  • Tap Target Size Warning

    25 interactive elements appear smaller than 48px.

    • • a.items-center.justify-center (Nahean Fardous | Full-Stack Developer & Bioinformatician) - 32x32px
    • • a.inline-flex.items-center (Home) - 65x32px
    • • a.inline-flex.items-center (Blocks) - 69x32px
    • • a.inline-flex.items-center (Components) - 113x32px
    • • a.inline-flex.items-center (Blog) - 55x32px
    • • a.inline-flex.items-center (Docs) - 58x32px
    • • a.inline-flex.items-center (RAG) - 53x32px
    • • a.inline-flex.items-center (Guides) - 72x32px
    • • a.inline-flex.items-center (About) - 65x32px
    • • a.inline-flex.items-center (Work) - 59x32px
    • • a.inline-flex.items-center (Contact) - 78x32px
    • • button.inline-flex.items-center (Search...CtrlKOpen Search) - 256x32px
    • • a.inline-flex.items-center (Github) - 32x32px
    • • a.items-center.justify-center (Facebook) - 32x32px
    • • button.items-center.justify-center (Toggle layout) - 32x32px
    • • button.inline-flex.items-center (Toggle theme) - 32x32px
    • • a.inline-flex.items-center (View All Projects) - 171x36px
    • • a.inline-flex.items-center (Visit Site) - 164x36px
    • • a.inline-flex.items-center (Source) - 166x36px
    • • a.inline-flex.items-center (Visit Site) - 164x36px
    • • a.inline-flex.items-center (Source) - 166x36px
    • • a.inline-flex.items-center (Visit Site) - 164x36px
    • • a.inline-flex.items-center (Source) - 166x36px
    • • a.inline-flex.items-center (View All) - 113x36px
    • • button.flex.items-center (Sequence Dashboard) - 222x42px

    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 Warning

    No JSON-LD schema scripts found.

    Fix: Add JSON-LD structured data matching your page type (Organization, Article, Product, etc.).

  • 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: 0.04 MB
    • • MEASURED: Image dimensions: 1200x630

Links Analysis

  • Internal Links Error

    4 internal links returned errors.

    • • https://nahean.vercel.app/about (HTTP 404)
    • • https://nahean.vercel.app/connections (HTTP 404)
    • • https://nahean.vercel.app/toolbox (HTTP 404)
    • • https://nahean.vercel.app/books (HTTP 404)

    Fix: Fix or remove the listed internal URLs, and ensure routes/pages return 200 responses.

  • External Links Warning

    11 external links returned errors or timed out.

    • • https://www.linkedin.com/in/nahean-fardous-30b8a9238/ (HTTP 999)
    • • https://openaiapi.vercel.app/openai/generate-image (HTTP 404)
    • • https://openaiapi.vercel.app/openai/text-completion (HTTP 404)
    • • https://next-js-projects-pf8p.vercel.app/casio-slider (HTTP 404)
    • • https://github.com/AlNahean/py-seq-align (HTTP 404)
    • • https://github.com/AlNahean/tg-summarizer-llm (HTTP 404)
    • • https://github.com/AlNahean/rusty-bio-tools (HTTP 404)
    • • https://github.com/AlNahean/scAnalyzer (HTTP 404)
    • • https://github.com/AlNahean/sc-genomics (HTTP 404)
    • • https://github.com/AlNahean/bio-viz (HTTP 404)
    • • https://nahean.com/ (network-error)

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

  • Link Format Warning

    8 links are empty, invalid, or placeholder-only.

    • • href="#" text="Book a call with meI'd love to chat even if there's no agenda!January, 2026 30 min callSUNMONTUEWEDTHUFRISAT123456789101"
    • • href="#" text="ARXIV"
    • • href="#" text="PDF"
    • • href="#" text="CODE"
    • • href="#" text="PDF"
    • • href="#" text="DOI"
    • • href="#" text="PDF"
    • • href="#" text="CODE"

    Fix: Replace empty/#/javascript href values with real destinations or use buttons for non-navigation actions.

Performance & Runtime