# View Page Source > View and analyze the source code of any website. Free online tool with SEO analysis, technology detection, and performance metrics. - [Website](https://www.view-page-source.com/): View and analyze the source code of any website - [Full documentation](https://www.view-page-source.com/llms-full.txt): Comprehensive llms-full.txt reference ## Overview View Page Source is a free web-based tool for viewing, downloading, and analyzing website HTML source code. It provides syntax-highlighted source viewing, comprehensive SEO analysis (meta tags, Open Graph, structured data), technology detection (100+ technologies), and performance metrics (DNS, TLS, TTFB). No registration required. ## Tools - [View Page Source](https://www.view-page-source.com/): View and analyze any website's HTML source code (homepage) - [HTML Viewer](https://www.view-page-source.com/html-viewer/): View and format any web page's HTML source with syntax highlighting - [View Page Source on Mobile](https://www.view-page-source.com/view-source-phone/): View a web page's HTML source on iPhone or Android - no app needed - [HTML Text Extractor](https://www.view-page-source.com/html-extractor/): Extract plain text content from any webpage - [Download Website Code](https://www.view-page-source.com/download-website-code/): Download a website's source code as a file - [SEO Checker](https://www.view-page-source.com/seo-checker/): Audit a URL's on-page SEO (meta tags, Open Graph, structured data, headings) - [HTTP Headers Check](https://www.view-page-source.com/headers-check/): Security-header report card with an A–F grade - [Social Preview](https://www.view-page-source.com/social-preview/): Preview Open Graph / Twitter Card link appearance All tools are available in 12 languages: English, German, Spanish, French, Indonesian, Italian, Japanese, Dutch, Polish, Portuguese, Turkish, and Arabic (RTL). ## API ### Token Endpoint ``` GET /api/token Response: { "token": "..." } ``` ### Fetch Endpoint ``` POST /api/fetch Content-Type: application/json { "url": "https://example.com", "token": "", "stylize": true } ``` ### Response ```json { "html": "...", "metrics": { "totalTime": 0.523, "dnsLookup": 0.042, "tcpConnection": 0.089, "tlsHandshake": 0.112, "serverWait": 0.198, "contentTransfer": 0.082 }, "serverInfo": { "server": "nginx", "httpVersion": "HTTP/2.0", "httpCode": 200, "method": "GET", "scheme": "https" }, "pageInfo": { "totalSize": "45.2 KB", "totalChars": 46285, "totalWords": 3420, "totalLines": 890, "tagCount": 245, "generators": "WordPress 6.4" }, "cacheHit": false, "executionTime": 534.2 } ``` ## Technical Details - **Backend**: Go (Fiber framework) - **Web Server**: Nginx (reverse proxy) - **Caching**: Redis or Memcached (2-hour TTL) - **Frontend**: Vanilla JavaScript, HTML5, CSS3 - **Syntax Highlighting**: Prism.js - **Maximum fetch size**: 2 MB - **Fetch timeout**: 10 seconds - **Rate limiting**: 10 requests per minute per IP ## Features - Syntax-highlighted HTML source code viewing - Smart Analysis: SEO meta tags, Open Graph, structured data, internationalization, link analysis, resources, document structure, security indicators - Technology Detection: CMS, frameworks, analytics, CDNs, payment systems, fonts, and 100+ technologies - Performance Metrics: DNS lookup, TCP connection, TLS handshake, server wait (TTFB), content transfer, total time with visual chart - Server Info: software, HTTP version, status code, method, scheme - Page Info: file size, character/word/line counts, HTML tag count, CMS/generator detection - Download source code as file - Copy to clipboard - Word wrap toggle - Dark/light theme - Mobile-friendly responsive design - Browser extensions for Chrome, Firefox, and Opera ## Privacy - No registration required - Fetched HTML cached for 2 hours only - IP addresses in logs for 7 days - No permanent storage of personal data - GDPR and CCPA compliant - Cookie consent required before analytics load - Third-party services: Google Analytics (with consent), Google AdSense ## Contact - [Website](https://www.view-page-source.com/): Main site - [Blog](https://www.view-page-source.com/posts/): Educational articles on HTML, SEO, and source code - Twitter: @codeviewer - Security: security@view-page-source.com ## Last Updated June 2026