Audit Result

UUID: 01a16589-7210-71d4-9241-ce799d8d6d9e

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sealmessenger.com

https://sealmessenger.com/

Scanned 4 days ago

76
Fair Score
39 total checks
Passed
21
Warnings
17
Errors
1

Meta Information

  • Title Tag Warning

    Found 4 characters. Keep title between 30 and 60 characters.

    Fix: Add a unique <title> tag describing the main page intent in 30-60 characters.

  • Meta Description Pass

    Found 153 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?v=3 (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 Pass

    Exactly one H1 found: "Someone may have left you a letter.".

  • Heading Hierarchy Pass

    Valid heading flow across 1 headings.

  • Image Alt Text Error

    1 of 2 images are missing alt text.

    Fix: Add meaningful alt attributes to all informative images for accessibility and image SEO.

Technical Optimization

  • HTTPS Pass

    Page is served over HTTPS.

  • HSTS & HTTPS Redirect Warning

    2 HTTPS hardening issues detected.

    • • Missing Strict-Transport-Security header.
    • • Could not probe the HTTP version of this page.

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

  • Security Headers Warning

    Missing: strict-transport-security, content-security-policy, x-frame-options, x-content-type-options, referrer-policy.

    Full HTTP headers (11)
    • • alt-svc: h3=":443"; ma=86400
    • • cache-control: public, max-age=0, must-revalidate
    • • cf-cache-status: HIT
    • • cf-ray: a4eba0492fcc19ae-EWR
    • • content-encoding: zstd
    • • content-type: text/html
    • • date: Thu, 22 Oct 2026 21:34:26 GMT
    • • nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
    • • report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=pRnCacnTsSCcbTWSjKPxhvJMZVVpBI3aMOhVGpGfyWM49CZSOD2X8wxK3FCvWVi5gYJlAqBdjjp77qt%2BHoTX%2BmDeh6y99rnQjiMooj8yRyZW92mvVRuY5fqHXQh%2FohzIrpEeeL4BZA3Ex0PiKSeBdA%3D%3D"}]}
    • • server: cloudflare
    • • server-timing: cfCacheStatus;desc="HIT" cfEdge;dur=28,cfOrigin;dur=0

    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: HIT
    • • cf-ray: a4eba0492fcc19ae-EWR
  • Perceived Load Time Pass

    Loaded in 0.23s (perceived).

  • Render Blocking Resources Warning

    0 scripts and 1 styles may block rendering.

    • • style: https://sealmessenger.com/seal.css

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

  • Compression Pass

    Text-like assets appear compressed.

  • Robots.txt Pass

    Found robots.txt (200).

  • Sitemap File Warning

    Sitemap missing or inaccessible at https://sealmessenger.com/sitemap.xml (404).

    Fix: Publish a sitemap.xml and reference it in robots.txt with: Sitemap: https://sealmessenger.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 Pass

    All 0 controls are labeled.

  • Landmarks Warning

    Missing landmarks: header, nav.

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

  • Tap Target Size Warning

    7 interactive elements appear smaller than 48px.

    • • a.write-get (Get Seal on the App Store) - 209x28px
    • • a (How it works) - 79x23px
    • • a (Limits) - 37x23px
    • • a (Questions) - 63x23px
    • • a (Source) - 44x23px
    • • a (Support) - 49x23px
    • • a (Privacy) - 46x23px

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

Social & Rich Results

  • Open Graph Basics Warning

    Missing og:title or og:description.

    Fix: Add og:title and og:description tags to control social preview text.

  • Open Graph Image Warning

    og:image is missing.

    Fix: Add <meta property="og:image" content="https://..."> with a high-quality share image.

  • Twitter Card Warning

    twitter:card is missing.

    Fix: Add <meta name="twitter:card" content="summary_large_image"> for better previews on X.

  • 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 Warning

    5 social preview quality issues detected.

    • • ISSUE: og:url should be an absolute URL.
    • • ISSUE: og:title should typically be between 10 and 70 characters.
    • • ISSUE: og:description should typically be between 50 and 200 characters.
    • • ISSUE: Use an absolute URL for og:image or twitter:image.
    • • ISSUE: twitter:card is missing.
    • • 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.

    Fix: Use absolute OG/Twitter URLs, keep metadata lengths in recommended ranges, and provide a preview image near 1200x630 under 5MB.

Links Analysis

  • Internal Links Pass

    Checked 9 links. No broken internal links found.

  • External Links Warning

    1 external links returned errors or timed out.

    • • https://www.producthunt.com/products/seal-4?embed=true&utm_source=embed&utm_medium=post_embed (HTTP 403)

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

  • Link Format Pass

    All 10 links use non-empty href values.

Performance & Runtime