Audit Result

Found 62 characters. Keep title between 30 and 60 characters.

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

Found 137 characters. Good snippet length.

Canonical found: https://thecalcu.com/

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

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

Language declared as "en".

Exactly one H1 found: "Calculate, convert, generate,format & validate.".

Valid heading flow across 14 headings.

All 1 images include alt text.

Page is served over HTTPS.

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.

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

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

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.

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

Server response headers do not expose version tokens.

Domain does not appear to be behind Cloudflare.

Loaded in 0.73s (perceived).

2 scripts and 3 styles may block rendering.

• • script: https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202607200101/show_ads_impl.js?bust=31099838
• • script: https://thecalcu.com/_next/static/chunks/polyfills-42372ed130431b0a.js
• • style: https://thecalcu.com/_next/static/css/692f68435ef45c91.css
• • style: https://thecalcu.com/_next/static/css/a33801e1dfda1d5f.css
• • style: https://thecalcu.com/_next/static/css/1a80e92a93ae48f3.css

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

40 text resources look uncompressed.

• • https://thecalcu.com/_next/static/chunks/main-app-150f61e877e3d702.js (text/javascript)
• • https://thecalcu.com/_next/static/chunks/29717-ade49e925a0b08a4.js (text/javascript)
• • https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202607200101/show_ads_impl.js?bust=31099838 (text/javascript; charset=ISO-8859-1)
• • https://fundingchoicesmessages.google.com/el/AGSKWxXixRJCPJHVjUU-SSS8CzlbEFPcZu3QoSPayvLOjdyMy2Xdh4yeORbgmfD2exQc51qjAScokeWWjHrQE70MEwR6MB85-hlzq-2H1pJBRDDgieRGi9d0zbUFRmCoCuBCHCt6Fsd62Q== (text/html; charset=utf-8)
• • https://thecalcu.com/plasma-volume-calculator/ (text/html)
• • https://thecalcu.com/breakeven-roas-calculator/ (text/html)
• • https://thecalcu.com/ponderal-index-calculator/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/plasma-volume-calculator/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/addiction-calculator/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/breakeven-roas-calculator/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/framingham-risk-calculator/ (text/html)
• • https://thecalcu.com/clv-calculator/ (text/html)
• • https://thecalcu.com/bacterial-doubling-time-calculator/ (text/html)
• • https://thecalcu.com/clv-calculator/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/framingham-risk-calculator/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/fixed-deposit-calculator-india/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/bacterial-doubling-time-calculator/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/validators/ (text/html)
• • https://thecalcu.com/formatters/ (text/html)
• • https://thecalcu.com/validators/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/formatters/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/generators/ (text/html)
• • https://thecalcu.com/converters/ (text/html)
• • https://thecalcu.com/generators/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • https://thecalcu.com/converters/__next._tree.txt?_rsc=5CB68i4pnAekjehf (text/plain)
• • ...and 15 more

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

Found robots.txt (200).

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

No robots meta tag defined.

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

1 of 2 controls are missing labels.

• • input[type="text"].search-bar-input (Search calculators, converters & more…)

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

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

24 interactive elements appear smaller than 48px.

• • a.header-nav-link (Calculators) - 82x22px
• • a.header-nav-link (Converters) - 78x22px
• • a.header-nav-link (Generators) - 80x22px
• • a.header-nav-link (Formatters) - 75x22px
• • a.header-nav-link (Validators) - 72x22px
• • button.prefs-trigger (Open preferences) - 124x33px
• • button.header-search-icon-btn (Search) - 36x36px
• • a.hero-pill (🧮Calculators835) - 155x37px
• • a.hero-pill (🔄Converters173) - 153x37px
• • a.hero-pill (🎲Generators61) - 148x37px
• • a.hero-pill (🧩Formatters47) - 144x37px
• • a.hero-pill (✅Validators61) - 139x37px
• • a (Browse all →) - 77x19px
• • a (Guides(160)) - 102x33px
• • a (How-To(92)) - 103x33px
• • a (Comparisons(65)) - 135x33px
• • a (Best-Of(44)) - 103x33px
• • a (🇮🇳 India(3)) - 93x33px
• • a (🇺🇸 United States(2)) - 145x33px
• • a (🇬🇧 United Kingdom(1)) - 158x33px
• • a (View all →) - 61x19px
• • a (View all →) - 61x19px
• • a.footer-logo - 180x36px
• • a.footer-col-heading.footer-col-heading--desktop (Calculators) - 214x18px

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

Core Open Graph tags are present.

og:image is present and absolute.

twitter:card set to summary_large_image.

JSON-LD schema detected.

Manifest or Apple touch icon is missing.

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

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

Checked 80 links. No broken internal links found.

No broken external links found in checked URLs.

All 179 links use non-empty href values.

Largest Contentful Paint: 1.38s.

Cumulative Layout Shift: 0.002.

Total Blocking Time estimate: 92ms.

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

13 JavaScript runtime issues detected.

• • Request failed: https://thecalcu.com/ponderal-index-calculator/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/addiction-calculator/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/plasma-volume-calculator/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/breakeven-roas-calculator/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/framingham-risk-calculator/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/clv-calculator/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/bacterial-doubling-time-calculator/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/fixed-deposit-calculator-india/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/validators/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/formatters/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/generators/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/converters/ (net::ERR_ABORTED, type: fetch)
• • Request failed: https://thecalcu.com/calculators/ (net::ERR_ABORTED, type: fetch)

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