Audit Result

Found 44 characters. Length is optimal.

Found 155 characters. Good snippet length.

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

Favicon found and reachable: https://www.doisotrung.com/wp-content/uploads/2022/05/cropped-bieu-tuong-doi-so-trung-32x32.png (HTTP 200).

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

Language declared as "vi".

Exactly one H1 found: "ĐỔI SỐ TRÚNG ĐẶC BIỆT MINH NGỌC".

Valid heading flow across 38 headings.

All 10 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.

Versioned headers detected: server, x-powered-by.

• • server: Microsoft-IIS/10.0
• • x-powered-by: PHP/8.5.8

Fix: Hide or remove version tokens in Server and X-Powered-By headers.

Domain does not appear to be behind Cloudflare.

Loaded in 1.70s (perceived).

Fix: Reduce payload size, cache static assets, and remove non-critical JS from initial load.

5 scripts and 12 styles may block rendering.

• • script: https://www.doisotrung.com/wp-includes/js/jquery/jquery.min.js?ver=3.7.1
• • script: https://www.doisotrung.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1
• • script: https://kit.fontawesome.com/49538d38c4.js
• • script: https://www.google.com/cse/static/element/d4d17fc91fc77275/cse_element__vi.js?usqp=CAI%3D
• • script: https://www.google.com/cse/static/element/d4d17fc91fc77275/cse_element__vi.js?usqp=CAI%3D
• • style: https://www.doisotrung.com/css/lien-he.css
• • style: https://www.doisotrung.com/wp-content/plugins/easy-table-of-contents/assets/css/screen.min.css?ver=2.0.85
• • style: https://www.doisotrung.com/wp-content/themes/flatsome/assets/css/flatsome.css?ver=3.15.5
• • style: https://www.doisotrung.com/wp-content/themes/flatsome-child/style.css?ver=3.0
• • style: https://fonts.googleapis.com/css?family=Mulish:regular,700,regular,700,regular&display=auto&ver=3.9
• • style: https://fonts.googleapis.com/icon?family=Material+Icons
• • style: https://www.doisotrung.com/css/style-custom.css?version=1.11
• • style: https://www.doisotrung.com/css/font-lien-he.css
• • style: https://www.google.com/cse/static/element/d4d17fc91fc77275/default_v6+vi.css
• • style: https://www.google.com/cse/static/style/look/v6/default.css
• • style: https://www.google.com/cse/static/element/d4d17fc91fc77275/default_v6+vi.css
• • style: https://www.google.com/cse/static/style/look/v6/default.css

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

1 text resources look uncompressed.

• • blob:https://www.doisotrung.com/8e82b86a-bc36-4bca-8867-0ac4ef0e0db6 (text/javascript)

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

Found robots.txt (200).

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

Robots meta found: follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large

All 2 controls are labeled.

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

14 interactive elements appear smaller than 48px.

• • a.skip-link.screen-reader-text (Skip to content) - 1x1px
• • a.nav-top-link (Điều khoản sử dụng) - 131x33px
• • a.nav-top-link (Chính sách bảo mật) - 133x33px
• • button#bt-hd (Hoa Hồng Đổi Số Trúng) - 214x37px
• • button#bt-hd (Thuế TNCN Trúng Số) - 194x37px
• • button#bt-hd (Đổi Số Trúng Tận Nơi) - 198x37px
• • a.nav-top-link (Đổi Số Trúng) - 131x29px
• • a.nav-top-link (Xổ số Miền Nam) - 151x29px
• • a.nav-top-link (Xổ số Miền Trung) - 168x29px
• • a.nav-top-link (Xổ số Miền Bắc) - 147x29px
• • a.nav-top-link (Tin tức) - 82x29px
• • a.nav-top-link (THƯ VIỆN) - 106x29px
• • a.nav-top-link (Liên hệ) - 80x29px
• • a.ez-toc-pull-right.ez-toc-btn (Toggle Table of Content) - 45x34px

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.

2 social preview quality issues detected.

• • ISSUE: Preview image is below recommended size (1200x630).
• • ISSUE: Preview image aspect ratio (1.50) differs from the recommended ~1.91:1.
• • 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: 0.90 MB
• • MEASURED: Image dimensions: 1024x683

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

Checked 22 links. No broken internal links found.

No broken external links found in checked URLs.

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

• • href="#"
• • href="#"
• • href="#"
• • href="#"
• • href="#"
• • href="javascript:void(0)" text="×"
• • href="#" text="THƯ VIỆN"
• • href="#" text="Toggle"
• • href="(empty)" text="MINH NGỌC"
• • href="(empty)" text="ĐỔI VÉ SỐ TRÚNG THƯỞNG"
• • href="(empty)" text="0973 777779"
• • href="javascript:void(0)" text="×"
• • href="#" text="THƯ VIỆN"

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

Largest Contentful Paint: 1.87s.

Cumulative Layout Shift: 0.000.

Total Blocking Time estimate: 58ms.

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

No console/page runtime errors detected during audit.