\n \n

{style.name}

\n \n\n {!hasOpenGraph && (\n

\n ⚠️ No OpenGraph tags found - using fallback data\n

\n )}\n\n

\n {data.image && (\n

\n {\n const target = e.target as HTMLImageElement;\n target.style.display = \"none\";\n const parent = target.parentElement;\n if (parent) {\n parent.innerHTML =\n '

Image failed to load

';\n }\n }}\n />\n

\n )}\n\n

\n {data.url && (\n

\n {formatUrl(data.url)}\n

\n )}\n\n {data.title && (\n

\n {platform === \"twitter\"\n ? truncateText(data.title, 70)\n : data.title}\n

\n )}\n\n {data.description && (\n

\n {platform === \"twitter\"\n ? truncateText(data.description, 125)\n : platform === \"facebook\"\n ? truncateText(data.description, 300)\n : data.description}\n

\n )}\n\n {data.siteName && (\n

\n {data.siteName}\n

\n )}\n

\n\n {/* Platform-specific metadata */}\n {(data.author || data.publishedTime) && (\n

\n {data.author && By {data.author}}\n {data.author && data.publishedTime && •}\n {data.publishedTime && (\n {new Date(data.publishedTime).toLocaleDateString()}\n )}\n

\n )}\n \n );\n}",[178,99,67],"734bc6d2-7bda-11f0-918c-0224a6c84d84",["D",1755483861582],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport React, { useState } from \"https://esm.sh/react@18.2.0\";\nimport { PreviewCard } from \"./PreviewCard.tsx\";\nimport type { PreviewResponse, PreviewRequest } from \"../../shared/types.ts\";\n\nexport function App() {\n const [url, setUrl] = useState('');\n const [loading, setLoading] = useState(false);\n const [result, setResult] = useState(null);\n const [error, setError] = useState(null);\n\n const handleSubmit = async (e: React.FormEvent) => {\n e.preventDefault();\n if (!url.trim()) return;\n\n setLoading(true);\n setError(null);\n setResult(null);\n\n try {\n const response = await fetch('/api/preview', {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n },\n body: JSON.stringify({ url: url.trim() } as PreviewRequest),\n });\n\n const data: PreviewResponse = await response.json();\n \n if (data.success) {\n setResult(data);\n } else {\n setError(data.error || 'Failed to fetch preview');\n }\n } catch (err) {\n setError(err instanceof Error ? err.message : 'Network error occurred');\n } finally {\n setLoading(false);\n }\n };\n\n const handleExampleUrl = (exampleUrl: string) => {\n setUrl(exampleUrl);\n };\n\n const exampleUrls = [\n 'https://github.com',\n 'https://www.youtube.com/watch?v=dQw4w9WgXcQ',\n 'https://dev.to',\n 'https://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-processing-an-unsorted-array'\n ];\n\n return (\n

\n OpenGraph Preview Tool\n

\n See how your URLs will appear when shared on social media platforms\n

\n\n

\n \n Enter URL to preview\n \n

\n setUrl(e.target.value)}\n placeholder=\"https://example.com\"\n className=\"flex-1 px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent\"\n disabled={loading}\n />\n \n {loading &&

}\n {loading ? 'Loading...' : 'Preview'}\n \n

\n \n

\n Try these examples:\n {exampleUrls.map((exampleUrl, index) => (\n handleExampleUrl(exampleUrl)}\n className=\"text-sm text-blue-600 hover:text-blue-800 underline\"\n disabled={loading}\n >\n {new URL(exampleUrl).hostname}\n \n ))}\n

\n\n {error && (\n

❌

Error

{error}

\n )}\n\n {result && result.success && result.data && (\n

\n Preview Results\n

\n {result.hasOpenGraph \n ? '✅ OpenGraph tags found and parsed successfully'\n : '⚠️ No OpenGraph tags found - showing fallback preview'\n }\n

\n URL: {result.url}\n

\n\n

\n \n \n \n \n

\n\n {/* Debug information */}\n

\n 🔍 Raw OpenGraph Data (for debugging)\n

\n              {JSON.stringify(result.data, null, 2)}\n

\n )}\n\n

\n This tool fetches and displays OpenGraph metadata from web pages.\n
\n It shows how your content will appear when shared on social media platforms.\n

\n );\n}",[178,99,82],"pulls","branches",1,"forks","envVars",{"_198":26,"_200":26},"connections",{"_198":26,"_199":26},"count","unfilledCount","emptyCount",{"_36":273,"_13":272,"_65":265,"_46":-5,"_38":39,"_172":274,"_173":24,"_40":275,"_42":26,"_68":100,"_175":-5,"_70":30,"_176":-5,"_217":276,"_17":277},{"_36":263,"_13":264,"_65":112,"_46":265,"_38":39,"_172":266,"_173":24,"_40":267,"_42":192,"_68":268,"_175":269,"_70":30,"_176":-5,"_217":270,"_17":271},{"_36":259,"_13":178,"_65":171,"_46":-5,"_38":39,"_172":245,"_173":24,"_40":260,"_42":26,"_68":100,"_175":-5,"_70":30,"_176":-5,"_217":261,"_17":262},{"_36":170,"_13":99,"_65":98,"_46":171,"_38":39,"_172":43,"_173":24,"_40":256,"_42":26,"_68":100,"_175":-5,"_70":30,"_176":-5,"_217":257,"_17":258},{"_36":186,"_13":82,"_65":81,"_46":98,"_38":39,"_172":76,"_173":24,"_40":253,"_42":26,"_68":69,"_175":188,"_70":30,"_176":-5,"_217":254,"_17":255},{"_36":181,"_13":67,"_65":66,"_46":98,"_38":39,"_172":93,"_173":24,"_40":250,"_42":183,"_68":69,"_175":184,"_70":30,"_176":-5,"_217":251,"_17":252},{"_36":242,"_13":243,"_65":244,"_46":171,"_38":39,"_172":245,"_173":24,"_40":246,"_42":26,"_68":21,"_175":247,"_70":30,"_176":-5,"_217":248,"_17":249},{"_36":234,"_13":235,"_65":236,"_46":171,"_38":39,"_172":237,"_173":24,"_40":238,"_42":26,"_68":69,"_175":239,"_70":30,"_176":-5,"_217":240,"_17":241},{"_36":230,"_13":229,"_65":223,"_46":-5,"_38":39,"_172":224,"_173":24,"_40":231,"_42":26,"_68":100,"_175":-5,"_70":30,"_176":-5,"_217":232,"_17":233},{"_36":220,"_13":221,"_65":222,"_46":223,"_38":39,"_172":224,"_173":24,"_40":225,"_42":26,"_68":69,"_175":226,"_70":30,"_176":-5,"_217":227,"_17":228},{"_36":212,"_13":213,"_65":214,"_46":-5,"_38":39,"_172":183,"_173":24,"_40":215,"_42":26,"_68":21,"_175":216,"_70":30,"_176":-5,"_217":218,"_17":219},"4a3b3908-7bda-11f0-b911-0224a6c84d84","README.md","4a3b39bc-7bda-11f0-b911-0224a6c84d84",["D",1755483792681],"# OpenGraph Preview App\n\nA web application that fetches and displays OpenGraph metadata from URLs, showing how they would appear when shared on social media platforms like X (Twitter), Facebook, Bluesky, and Mastodon.\n\n## Features\n\n- Fetch OpenGraph metadata from any URL\n- Display preview cards similar to social media platforms\n- Handle cases where no OpenGraph tags are present\n- Responsive design with social media platform styling\n- Error handling for invalid URLs or network issues\n\n## Project Structure\n\n```\n├── backend/\n│ └── index.ts # Main API server with URL fetching\n├── frontend/\n│ ├── index.html # Main HTML template\n│ ├── index.tsx # React frontend\n│ └── components/\n│ ├── App.tsx # Main app component\n│ └── PreviewCard.tsx # OpenGraph preview card\n└── shared/\n └── types.ts # Shared TypeScript types\n```\n\n## Usage\n\n1. Enter a URL in the input field\n2. Click \"Preview\" to fetch OpenGraph metadata\n3. View the preview cards showing how the URL would appear on different platforms\n4. If no OpenGraph tags are found, a message will indicate this\n\n## API Endpoints\n\n- `GET /` - Serves the frontend application\n- `POST /api/preview` - Fetches OpenGraph metadata for a given URL","children",[],[213],"4c7784a6-7bda-11f0-9e1d-0224a6c84d84","types.ts","4c77856e-7bda-11f0-9e1d-0224a6c84d84","5c75e33f-af27-472e-ac04-a0f4759e9bc1",3,["D",1755483796436],"export interface OpenGraphData {\n title?: string;\n description?: string;\n image?: string;\n url?: string;\n siteName?: string;\n type?: string;\n locale?: string;\n author?: string;\n publishedTime?: string;\n modifiedTime?: string;\n}\n\nexport interface PreviewResponse {\n success: boolean;\n data?: OpenGraphData;\n error?: string;\n hasOpenGraph: boolean;\n url: string;\n}\n\nexport interface PreviewRequest {\n url: string;\n}",[],[229,221],"shared","4c778d3e-7bda-11f0-9e1d-0224a6c84d84",["D",1755483796436],[210],[229],"751bc9e4-7bda-11f0-ae8c-0224a6c84d84","index.tsx","751bcad4-7bda-11f0-ae8c-0224a6c84d84",8,["D",1755483864628],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport React from \"https://esm.sh/react@18.2.0\";\nimport { createRoot } from \"https://esm.sh/react-dom@18.2.0/client\";\nimport { App } from \"./components/App.tsx\";\n\nconst root = createRoot(document.getElementById('root')!);\nroot.render();",[],[178,235],"5bb730f6-7bda-11f0-a144-0224a6c84d84","index.html","5bb731aa-7bda-11f0-a144-0224a6c84d84",5,["D",1755483822021],"\n\n\n \n \n OpenGraph Preview Tool\n \n \n \n\n\n

\n \n\n",[],[178,243],["D",1755511759002],[],[178,99,67],["D",1755483861582],[],[178,99,82],["D",1755483838974],[205,206],[178,99],"5bb73a38-7bda-11f0-a144-0224a6c84d84",["D",1755483822021],[204,207,208],[178],"76d91e94-7bda-11f0-9c82-0224a6c84d84","index.ts","e3b00545-15c6-49de-943e-443014f167c3",9,["D",1755483867544],"http","import { Hono } from \"https://esm.sh/hono@3.11.7\";\nimport { readFile, serveFile } from \"https://esm.town/v/std/utils@85-main/index.ts\";\nimport type { OpenGraphData, PreviewResponse, PreviewRequest } from \"../shared/types.ts\";\n\nconst app = new Hono();\n\n// Unwrap Hono errors to see original error details\napp.onError((err) => Promise.reject(err));\n\n// Serve static files\napp.get(\"/frontend/*\", c => serveFile(c.req.path, import.meta.url));\napp.get(\"/shared/*\", c => serveFile(c.req.path, import.meta.url));\n\n// Serve main page\napp.get(\"/\", async c => {\n const html = await readFile(\"/frontend/index.html\", import.meta.url);\n return c.html(html);\n});\n\n// Extract OpenGraph tags from HTML\nfunction extractOpenGraphData(html: string): OpenGraphData {\n const ogData: OpenGraphData = {};\n \n // Regular expressions to match OpenGraph meta tags\n const ogRegex = /]*>/gi;\n const twitterRegex = /]*>/gi;\n const titleRegex = /]*>([^<]*)<\\/title>/i;\n const descRegex = /]*>/i;\n \n let match;\n \n // Extract OpenGraph tags\n while ((match = ogRegex.exec(html)) !== null) {\n const property = match[1];\n const content = match[2];\n \n switch (property) {\n case 'title':\n ogData.title = content;\n break;\n case 'description':\n ogData.description = content;\n break;\n case 'image':\n ogData.image = content;\n break;\n case 'url':\n ogData.url = content;\n break;\n case 'site_name':\n ogData.siteName = content;\n break;\n case 'type':\n ogData.type = content;\n break;\n case 'locale':\n ogData.locale = content;\n break;\n case 'author':\n ogData.author = content;\n break;\n case 'article:published_time':\n ogData.publishedTime = content;\n break;\n case 'article:modified_time':\n ogData.modifiedTime = content;\n break;\n }\n }\n \n // Extract Twitter Card tags as fallback\n while ((match = twitterRegex.exec(html)) !== null) {\n const property = match[1];\n const content = match[2];\n \n switch (property) {\n case 'title':\n if (!ogData.title) ogData.title = content;\n break;\n case 'description':\n if (!ogData.description) ogData.description = content;\n break;\n case 'image':\n if (!ogData.image) ogData.image = content;\n break;\n }\n }\n \n // Fallback to HTML title and description\n if (!ogData.title) {\n const titleMatch = titleRegex.exec(html);\n if (titleMatch) ogData.title = titleMatch[1].trim();\n }\n \n if (!ogData.description) {\n const descMatch = descRegex.exec(html);\n if (descMatch) ogData.description = descMatch[1];\n }\n \n return ogData;\n}\n\n// Check if URL has any OpenGraph tags\nfunction hasOpenGraphTags(html: string): boolean {\n const ogRegex = / {\n try {\n const body: PreviewRequest = await c.req.json();\n const { url } = body;\n \n if (!url) {\n return c.json({\n success: false,\n error: \"URL is required\",\n hasOpenGraph: false,\n url: \"\"\n }, 400);\n }\n \n const normalizedUrl = normalizeUrl(url);\n \n // Validate URL format\n try {\n new URL(normalizedUrl);\n } catch {\n return c.json({\n success: false,\n error: \"Invalid URL format\",\n hasOpenGraph: false,\n url: normalizedUrl\n }, 400);\n }\n \n // Fetch the webpage\n const response = await fetch(normalizedUrl, {\n headers: {\n 'User-Agent': 'Mozilla/5.0 (compatible; OpenGraph-Preview-Bot/1.0)'\n }\n });\n \n if (!response.ok) {\n return c.json({\n success: false,\n error: `Failed to fetch URL: ${response.status} ${response.statusText}`,\n hasOpenGraph: false,\n url: normalizedUrl\n }, 400);\n }\n \n const html = await response.text();\n const ogData = extractOpenGraphData(html);\n const hasOG = hasOpenGraphTags(html);\n \n // Set the canonical URL if not present\n if (!ogData.url) {\n ogData.url = normalizedUrl;\n }\n \n return c.json({\n success: true,\n data: ogData,\n hasOpenGraph: hasOG,\n url: normalizedUrl\n });\n \n } catch (error) {\n console.error(\"Error fetching OpenGraph data:\", error);\n return c.json({\n success: false,\n error: error instanceof Error ? error.message : \"Unknown error occurred\",\n hasOpenGraph: false,\n url: \"\"\n }, 500);\n }\n});\n\nexport default app.fetch;",[],[272,264],"backend","5811c1d2-7bda-11f0-b992-0224a6c84d84",4,["D",1755483815904],[202],[272],["D",1755483675829],{"_11":12,"_148":73},{"_11":12,"_144":-5,"_72":73,"_31":71,"_145":146,"_147":30},{"_42":93,"_13":16,"_36":39,"_136":102,"_137":-5,"_138":-5,"_139":-5,"_140":-5,"_141":-5,"_142":14,"_143":12},"ctx",{"_55":-5,"_167":315,"_316":317,"_318":319,"_320":30,"_321":30,"_322":30,"_323":24,"_324":-5,"_325":-7,"_326":-7,"_327":26,"_328":30,"_329":30,"_330":-5,"_331":30,"_332":30,"_333":30,"_334":-5},"ENV",{"_286":287,"_288":289,"_290":16,"_291":292,"_293":294,"_295":296,"_297":298,"_299":300,"_301":302,"_303":304,"_305":306,"_307":308,"_309":310,"_311":312,"_313":314},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","fdb67791413f4386b4dbf18f354029a617f6160f","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

History · components