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- Wrap nav in <header> landmark on all pages - Wrap content in <main id='main-content'> on all pages - Add skip-to-content link (visually hidden, visible on focus) - Add skip-link CSS styles - Add 65 accessibility tests covering all 16 full-layout pages - All 288 tests passing
204 lines
13 KiB
HTML
204 lines
13 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<title>Generate OG Images & Social Media Previews with a Screenshot API | SnapAPI</title>
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<meta name="description" content="Use SnapAPI to generate dynamic OG images and social media preview cards from HTML templates. Render custom Open Graph images on-the-fly with a simple API call.">
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<link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='.9em' font-size='90'>📸</text></svg>">
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<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet">
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<link rel="canonical" href="https://snapapi.eu/use-cases/social-media-previews">
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<meta property="og:title" content="Generate OG Images & Social Media Previews with a Screenshot API">
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<meta property="og:description" content="Render dynamic Open Graph images and Twitter cards from HTML templates using SnapAPI.">
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<meta property="og:type" content="article">
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<meta property="og:url" content="https://snapapi.eu/use-cases/social-media-previews">
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<meta property="og:image" content="https://snapapi.eu/og-image.png">
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<meta name="twitter:card" content="summary_large_image">
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<meta name="twitter:title" content="Generate OG Images & Social Media Previews with a Screenshot API">
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<meta name="twitter:description" content="Render dynamic Open Graph images and Twitter cards from HTML templates using SnapAPI.">
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<script type="application/ld+json">
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</script>
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<style>
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*{box-sizing:border-box;margin:0;padding:0}
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:root{
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--bg:#0a0e17;--bg2:#0f1420;--card:#141a28;--card-hover:#1a2235;
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--border:#1e2a3f;--border-light:#2a3752;
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html{scroll-behavior:smooth}
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body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
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a{color:var(--primary-light);text-decoration:none;transition:color .2s}
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a:hover{color:var(--primary)}
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::selection{background:var(--primary);color:#fff}
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.container{max-width:800px;margin:0 auto;padding:0 24px}
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.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:10px;font-weight:600;font-size:.95rem;border:none;cursor:pointer;transition:all .2s;font-family:inherit}
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.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 20px rgba(79,143,255,0.3)}
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.btn-lg{padding:16px 36px;font-size:1.05rem;border-radius:12px}
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.nav-inner{max-width:1180px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
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.nav-logo{font-size:1.15rem;font-weight:800;display:flex;align-items:center;gap:8px;color:var(--text)}
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.nav-logo span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
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.nav-links{display:flex;gap:32px;align-items:center}
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.nav-links a{color:var(--muted);font-size:.9rem;font-weight:500;transition:color .2s}
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.nav-links a:hover{color:var(--text)}
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.nav-cta{margin-left:8px}
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.nav-mobile{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer}
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.article{padding:80px 0 60px}
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.article h1{font-size:2.5rem;font-weight:800;line-height:1.2;margin-bottom:24px}
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.article h2{font-size:1.6rem;font-weight:700;margin:48px 0 16px}
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.article h3{font-size:1.2rem;font-weight:600;margin:32px 0 12px}
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.article p{color:var(--text-secondary);font-size:1rem;line-height:1.8;margin-bottom:16px}
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.article ul,.article ol{color:var(--text-secondary);margin:0 0 16px 24px;line-height:1.8}
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.article li{margin-bottom:8px}
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.code-window{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;margin:24px 0;box-shadow:0 10px 40px rgba(0,0,0,0.2)}
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.code-titlebar{display:flex;align-items:center;gap:8px;padding:14px 20px;background:rgba(0,0,0,0.2);border-bottom:1px solid var(--border)}
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.code-dot{width:12px;height:12px;border-radius:50%}
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.code-dot:nth-child(1){background:#ff5f57}.code-dot:nth-child(2){background:#ffbd2e}.code-dot:nth-child(3){background:#28c840}
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.code-titlebar span{flex:1;text-align:center;font-size:.8rem;color:var(--muted);font-weight:500}
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.code-body{padding:24px;font-family:'JetBrains Mono',monospace;font-size:.85rem;line-height:1.9;overflow-x:auto;color:var(--text-secondary)}
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.code-body .kw{color:var(--purple)}.code-body .str{color:var(--accent)}.code-body .cmt{color:#475569;font-style:italic}.code-body .fn{color:var(--primary-light)}.code-body .prop{color:var(--orange)}
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.related a{display:block;padding:8px 0;font-size:.95rem}
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footer{border-top:1px solid var(--border);padding:48px 24px 32px;background:var(--bg2)}
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.footer-grid{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
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.footer-col h5{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;color:var(--muted);margin-bottom:16px}
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.footer-col a:hover{color:var(--text)}
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.footer-bottom{max-width:1180px;margin:0 auto;padding-top:24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:.8rem;color:var(--muted)}
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@media(max-width:640px){
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.article{padding:40px 0 30px}
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.article h1{font-size:1.8rem}
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.nav-links{display:none;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:rgba(10,14,23,0.97);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:16px 24px;gap:16px;z-index:99}
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.nav-links.show{display:flex}
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.nav-mobile{display:block}
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.footer-grid{grid-template-columns:1fr}
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}
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.skip-link{position:absolute;top:-100%;left:50%;transform:translateX(-50%);background:var(--primary);color:#fff;padding:12px 24px;border-radius:0 0 8px 8px;font-weight:600;font-size:.9rem;z-index:1000;transition:top .2s}
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.skip-link:focus{top:0}
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</style>
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</head>
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<body>
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<a href="#main-content" class="skip-link">Skip to content</a>
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<header>
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<nav>
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<div class="nav-inner">
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<a href="/" class="nav-logo">📸 <span>SnapAPI</span></a>
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<div class="nav-links">
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<a href="/#features">Features</a>
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<a href="/#playground">Try It Free</a>
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<a href="/#pricing">Pricing</a>
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<a href="/docs">API Docs</a>
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<a href="/#pricing" class="btn btn-primary btn-sm nav-cta">Get API Key</a>
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</div>
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<button class="nav-mobile" onclick="document.querySelector('.nav-links').classList.toggle('show')" aria-label="Menu">☰</button>
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</div>
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</nav>
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</header>
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<main id="main-content">
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<article class="article">
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<div class="container">
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<h1>Generate OG Images & Social Media Previews with a Screenshot API</h1>
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<p>When you share a link on Twitter, LinkedIn, or Slack, the platform fetches an Open Graph image to display as a preview card. Static OG images are fine for homepages — but what about blog posts, user profiles, or product pages that need <strong>unique, dynamic preview images</strong>?</p>
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<p>SnapAPI lets you render any HTML page as a PNG image via a simple API call. Build an HTML template with your title, author, and branding, host it on a URL, and let SnapAPI screenshot it into a pixel-perfect OG image.</p>
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<h2>How It Works</h2>
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<p>The workflow is straightforward:</p>
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<ol>
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<li><strong>Create an HTML template</strong> — Design your OG card layout (1200×630px) with CSS. Use query parameters for dynamic content.</li>
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<li><strong>Call SnapAPI</strong> — Pass the template URL to the screenshot endpoint. SnapAPI renders it in a real Chromium browser.</li>
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<li><strong>Serve the image</strong> — Use the returned PNG as your <code>og:image</code> meta tag, or cache it on your CDN.</li>
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</ol>
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<h2>Code Example</h2>
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<h3>Screenshot an OG Template</h3>
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<div class="code-window">
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<div class="code-titlebar"><span class="code-dot"></span><span class="code-dot"></span><span class="code-dot"></span><span>Node.js</span></div>
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<div class="code-body"><pre><span class="kw">const</span> response = <span class="kw">await</span> <span class="fn">fetch</span>(<span class="str">'https://snapapi.eu/v1/screenshot'</span>, {
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method: <span class="str">'POST'</span>,
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headers: {
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<span class="str">'Content-Type'</span>: <span class="str">'application/json'</span>,
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<span class="str">'X-API-Key'</span>: process.env.<span class="prop">SNAPAPI_KEY</span>
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},
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body: JSON.stringify({
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url: <span class="str">'https://yoursite.com/og-template?title=My+Post&author=Jane'</span>,
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width: <span class="prop">1200</span>,
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height: <span class="prop">630</span>,
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format: <span class="str">'png'</span>
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})
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});
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<span class="kw">const</span> imageBuffer = <span class="kw">await</span> response.<span class="fn">arrayBuffer</span>();
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<span class="cmt">// Upload to S3, serve from CDN, or return directly</span></pre></div>
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</div>
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<h3>Dynamic Meta Tags</h3>
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<p>Point your <code>og:image</code> to a serverless function that calls SnapAPI on-the-fly:</p>
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<div class="code-window">
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<div class="code-titlebar"><span class="code-dot"></span><span class="code-dot"></span><span class="code-dot"></span><span>HTML</span></div>
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<div class="code-body"><pre><span class="cmt"><!-- In your page's <head> --></span>
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<meta property=<span class="str">"og:image"</span>
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content=<span class="str">"https://yoursite.com/api/og?title=My+Blog+Post"</span> />
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<meta property=<span class="str">"og:image:width"</span> content=<span class="str">"1200"</span> />
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<meta property=<span class="str">"og:image:height"</span> content=<span class="str">"630"</span> /></pre></div>
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</div>
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<h2>Why Use SnapAPI for OG Images?</h2>
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<ul>
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<li><strong>Real browser rendering</strong> — Full CSS support, custom fonts, gradients, SVGs. No template language limitations.</li>
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<li><strong>EU-hosted, GDPR compliant</strong> — All rendering happens on servers in Germany. No data leaves the EU.</li>
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<li><strong>Fast</strong> — Typical render times under 2 seconds. Cache the result and serve instantly.</li>
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<li><strong>Simple API</strong> — One POST request, one image back. No SDKs required.</li>
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</ul>
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<div class="cta-box">
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<h2>Start Generating OG Images</h2>
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<p>Try SnapAPI free in the playground — no signup needed.</p>
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<a href="/#pricing" class="btn btn-primary btn-lg">Get Your API Key →</a>
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</div>
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<div class="related">
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<h3>Related Use Cases</h3>
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<a href="/use-cases/website-monitoring">Visual Website Monitoring & Regression Testing →</a>
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<a href="/use-cases/pdf-reports">Generate Visual Reports & Thumbnails from Web Content →</a>
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</div>
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</div>
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</article>
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</main>
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<footer>
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<div class="footer-grid">
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<div class="footer-brand"><h4>📸 SnapAPI</h4><p>The EU-hosted screenshot API for developers. Convert any URL to a pixel-perfect image with a simple API call.</p></div>
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<div class="footer-col"><h5>Product</h5><a href="/#features">Features</a><a href="/#pricing">Pricing</a><a href="/#playground">Playground</a><a href="/docs">API Docs</a></div>
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<div class="footer-col"><h5>Developers</h5><a href="/docs">Swagger / OpenAPI</a><a href="/health">Status</a></div>
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<div class="footer-col"><h5>Legal</h5><a href="/impressum.html">Impressum</a><a href="/privacy.html">Privacy Policy</a><a href="/terms.html">Terms of Service</a></div>
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</div>
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<div class="footer-bottom">
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<span>© 2026 Cloonar Technologies GmbH · FN 631089y · ATU81280034</span>
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<span>Linzer Straße 192/1/2, 1140 Wien, Austria 🇦🇹</span>
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<span>EU-hosted 🇪🇺 · All data stays in Europe</span>
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</div>
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</footer>
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</body>
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</html>
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