[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_163":164,"_165":166},"routes/_app.x.$handle.$name",{"_93":92,"_31":42,"_101":83,"_26":102,"_13":14,"_103":-5,"_11":104,"_105":106,"_107":108,"_109":110,"_111":112,"_20":-5,"_113":-5,"_114":-5,"_115":24,"_116":117,"_118":55,"_119":-5,"_120":-5,"_121":122},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":-5,"_18":-5},"project",{"_40":41,"_31":42,"_35":43,"_44":-5,"_45":24,"_46":47,"_48":47,"_49":-5,"_50":-5,"_18":51,"_52":53,"_54":55,"_56":55,"_57":-5,"_58":59,"_60":61,"_62":-5,"_63":-5,"_64":-5,"_65":-5,"_66":67,"_68":67,"_69":70,"_71":70,"_72":70,"_73":67,"_74":67,"_75":76,"_77":78,"_79":80,"_81":24},"version",7,"changes",[19],"aiChatInfo","userId",{"_20":21,"_22":-7,"_23":24,"_25":24,"_26":27,"_28":27},"file",{"_29":30,"_31":27,"_32":20,"_33":34,"_35":36,"_37":14,"_38":39,"_23":24},"previous","deleted",false,"deletedHere","path","README.md","latestPath","fileId","95553310-66dd-11f0-953c-0224a6c84d84","name","fileType","content","# URL Preview Generator\n\nA simple web application that allows users to enter a URL and generate a preview image of the website.\n\n## Features\n\n- Clean, responsive interface built with TailwindCSS\n- URL validation with helpful error messages\n- Loading states with spinner animation\n- Preview image generation using free screenshot service\n- Support for keyboard shortcuts (Enter to submit)\n- Error handling for invalid URLs and network issues\n\n## How to Use\n\n1. Enter a valid URL in the input field (must include http:// or https://)\n2. Click the \"Confirm\" button or press Enter\n3. Wait for the preview to generate\n4. View the website screenshot in the preview section\n\n## Technical Details\n\n- Built as a single-file Val Town HTTP endpoint\n- Uses `image.thum.io` free screenshot service for generating previews\n- Responsive design that works on desktop and mobile\n- Client-side JavaScript handles the user interface\n- Server-side validation and error handling\n\n## API Endpoints\n\n- `GET /` - Serves the main HTML interface\n- `POST /preview` - Generates preview for a given URL\n - Request body: `{ \"url\": \"https://example.com\" }`\n - Response: `{ \"success\": true, \"previewUrl\": \"...\", \"originalUrl\": \"...\" }`\n\n## Error Handling\n\nThe application handles various error cases:\n- Empty URL input\n- Invalid URL format\n- Network errors during preview generation\n- Service unavailability\n\nAll errors are displayed to the user with clear, actionable messages.","createdAt",["D",1753176232762],"branchVersion","branchId","a8d7677e-66dc-11f0-a24a-0224a6c84d84","id","a8d7275a-66dc-11f0-a24a-0224a6c84d84","imageurl",["D",1753175835996],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","imageUrl","859ec842-bf95-465a-a4e1-5abb064c4cb3","pinnedFileId","13116a86-66dd-11f0-b311-0224a6c84d84","pinPreview",true,"pinMigrated","screenshotVersion","likeCount",0,"orgId","7dd50439-a5df-4eab-815f-eaf791c2d0e2","tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_93":92,"_100":96},"org",{"_93":92,"_94":-5,"_95":96,"_18":51,"_97":98,"_99":24},"branch",{"_13":82,"_31":83,"_40":39,"_84":41,"_85":-5,"_86":-5,"_87":-5,"_88":-5,"_89":-5,"_90":42,"_91":92},"isOwned",27,"main","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","lchtao26","handle","displayName","avatar","https://img.clerk.com/eyJ0eXBlIjoicHJveHkiLCJzcmMiOiJodHRwczovL2ltYWdlcy5jbGVyay5kZXYvb2F1dGhfZ2l0aHViL2ltZ18yWUNUOUk1aEF3cEk1RTZPWk5IcG80Qk1RZXAifQ","tier","free","canRestrictVals","profileImageUrl","branchName","","adoptOrgId",{"_40":41,"_31":42,"_35":159,"_44":-5,"_45":24,"_46":47,"_48":47,"_49":-5,"_50":-5,"_18":51,"_52":53,"_54":55,"_56":55,"_57":-5,"_58":59,"_60":61,"_62":-5,"_63":-5,"_64":-5,"_65":-5,"_66":67,"_68":67,"_69":70,"_71":70,"_72":70,"_73":67,"_74":67,"_75":160,"_77":161,"_79":162,"_81":24},"tree",[150,151],"files",[150,151],"counts",{"_139":59,"_140":141,"_142":59,"_143":144,"_145":146},"contents",[123,124],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_40":136,"_31":27,"_29":30,"_127":-5,"_38":39,"_37":14,"_129":24,"_35":137,"_13":59,"_32":20,"_33":34,"_23":24,"_134":-5,"_26":138},{"_40":125,"_31":126,"_29":53,"_127":-5,"_38":39,"_37":128,"_129":24,"_35":130,"_13":131,"_32":132,"_33":133,"_23":24,"_134":-5,"_26":135},"8c033546-66dd-11f0-a04c-0224a6c84d84","new-file-1973.tsx","parentId",6,"latest",["D",1753176217124],5,"http","export default async function (req: Request): Promise {\n const url = new URL(req.url);\n \n // Handle preview generation\n if (url.pathname === '/preview' && req.method === 'POST') {\n try {\n const body = await req.json();\n const targetUrl = body.url;\n \n if (!targetUrl) {\n return Response.json({ error: 'URL is required' }, { status: 400 });\n }\n \n // Validate URL format\n try {\n new URL(targetUrl);\n } catch {\n return Response.json({ error: 'Invalid URL format' }, { status: 400 });\n }\n \n // Generate preview using a free screenshot service\n const previewUrl = `https://image.thum.io/get/width/1200/crop/800/${encodeURIComponent(targetUrl)}`;\n \n return Response.json({ \n success: true, \n previewUrl: previewUrl,\n originalUrl: targetUrl \n });\n } catch (error) {\n return Response.json({ error: 'Failed to generate preview' }, { status: 500 });\n }\n }\n \n // Serve the main HTML page\n const html = `\n\n\n\n \n \n URL Preview Generator\n \n \n\n\n

URL Preview Generator

\n \n

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

\n \n \n

\n \n

Generating preview...

\n \n

Error

\n \n

Preview:

URL:

\n $\"Website$ \n

\n\n \n\n`;\n\n return new Response(html, {\n headers: { 'Content-Type': 'text/html' }\n });\n}","label",[126],"95553270-66dd-11f0-953c-0224a6c84d84",["D",1753176232762],[27],"pulls","branches",1,"forks","envVars",{"_147":59,"_149":59},"connections",{"_147":59,"_148":59},"count","unfilledCount","emptyCount",{"_40":136,"_31":27,"_29":30,"_127":-5,"_38":39,"_37":14,"_129":24,"_35":156,"_13":59,"_32":20,"_33":34,"_23":24,"_134":-5,"_153":157,"_26":158},{"_40":125,"_31":126,"_29":53,"_127":-5,"_38":39,"_37":128,"_129":24,"_35":152,"_13":131,"_32":132,"_33":133,"_23":24,"_134":-5,"_153":154,"_26":155},["D",1753176217124],"children",[],[126],["D",1753176232762],[],[27],["D",1753175835996],{"_93":92,"_100":96},{"_93":92,"_94":-5,"_95":96,"_18":51,"_97":98,"_99":24},{"_13":82,"_31":83,"_40":39,"_84":41,"_85":-5,"_86":-5,"_87":-5,"_88":-5,"_89":-5,"_90":42,"_91":92},"ctx",{"_75":-5,"_120":196,"_197":198,"_199":200,"_201":24,"_202":24,"_203":24,"_204":55,"_205":-5,"_206":-7,"_207":-7,"_208":59,"_209":24,"_210":24,"_211":-5,"_212":24,"_213":24,"_214":24,"_215":-5},"ENV",{"_167":168,"_169":170,"_171":83,"_172":173,"_174":175,"_176":177,"_178":179,"_180":181,"_182":183,"_184":185,"_186":187,"_188":189,"_190":191,"_192":193,"_194":195},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","71c1b20804b3232a7e513be260cfffc1932a9e97","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"]

Diff · v7