[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_151":152,"_153":154},"routes/_app.x.$handle.$name",{"_11":12,"_13":14,"_15":16,"_18":19,"_17":-7,"_114":-5,"_20":115,"_22":116,"_117":118,"_119":120,"_25":121,"_24":-5,"_122":-5,"_123":-5,"_124":53,"_125":126,"_127":44,"_128":-5,"_129":-5,"_130":131},"routes/_app.x.$handle.$name.branch.$branch.code.$",{"_11":12,"_13":14,"_15":16,"_17":-7,"_18":19,"_20":21,"_22":23,"_24":-7,"_25":26,"_27":-5,"_28":-5,"_29":-5,"_30":-5,"_31":-5},"handle","jjg","name","reactImageStackerApp","branchName","main","version","path","","project",{"_33":61,"_13":14,"_45":62,"_63":-5,"_64":53,"_65":66,"_67":66,"_68":-5,"_69":-5,"_70":71,"_72":37,"_73":44,"_74":-5,"_75":-5,"_76":47,"_77":78,"_79":-5,"_80":-5,"_81":-5,"_82":-5,"_83":84,"_85":84,"_86":87,"_88":87,"_89":87,"_90":84,"_91":84,"_92":93,"_94":95,"_96":97,"_98":53},"tree",[56],"file","contents",[32],"upstream","pull","ahead","behind","envVars",{"_33":34,"_13":35,"_36":37,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":46,"_17":47,"_48":49,"_50":51,"_52":53,"_54":-5,"_18":55},"id","5caba46c-2782-11f0-b46e-569c3dd06744","main.tsx","fileId","5ca40f72-2782-11f0-b46e-569c3dd06744","parentId","branchId","5ca090ea-2782-11f0-b46e-569c3dd06744","branchVersion",2,"latest",true,"createdAt",["D",1735579824609],1,"fileType","http","content","/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport React, { useState, useRef, useCallback } from \"https://esm.sh/react@18.2.0\";\nimport { createRoot } from \"https://esm.sh/react-dom@18.2.0/client\";\n\nfunction ImageStacker() {\n const [images, setImages] = useState<{src: string, width: number, height: number}[]>([]);\n const canvasRef = useRef(null);\n\n const handleFileUpload = useCallback((event: React.ChangeEvent | React.DragEvent) => {\n event.preventDefault();\n const files = 'dataTransfer' in event ? \n event.dataTransfer.files : \n (event.target as HTMLInputElement).files;\n\n if (files) {\n Array.from(files).forEach(file => {\n const reader = new FileReader();\n reader.onload = (e) => {\n const img = new Image();\n img.onload = () => {\n const canvas = canvasRef.current;\n if (canvas) {\n const ctx = canvas.getContext('2d');\n if (ctx) {\n // Determine minimum width across all images\n const newImageEntry = { src: img.src, width: img.width, height: img.height };\n const updatedImages = [...images, newImageEntry];\n const minWidth = Math.min(...updatedImages.map(i => i.width));\n const totalHeight = updatedImages.reduce((sum, img) => sum + img.height, 0);\n\n // Set canvas dimensions precisely\n canvas.width = minWidth;\n canvas.height = totalHeight;\n\n // Clear canvas and redraw all images scaled to min width\n ctx.clearRect(0, 0, canvas.width, canvas.height);\n let currentY = 0;\n updatedImages.forEach(imgData => {\n const loadedImg = new Image();\n loadedImg.onload = () => {\n // Scale image to minimum width while maintaining aspect ratio\n const scaleFactor = minWidth / imgData.width;\n const scaledHeight = imgData.height * scaleFactor;\n \n ctx.drawImage(\n loadedImg, \n 0, \n currentY, \n minWidth, \n scaledHeight\n );\n currentY += scaledHeight;\n };\n loadedImg.src = imgData.src;\n });\n\n // Update images state\n setImages(updatedImages);\n }\n }\n };\n img.src = e.target?.result as string;\n };\n reader.readAsDataURL(file);\n });\n }\n }, [images]);\n\n const handleDownload = () => {\n const canvas = canvasRef.current;\n if (canvas) {\n const link = document.createElement('a');\n link.download = 'stacked-images.png';\n link.href = canvas.toDataURL();\n link.click();\n }\n };\n\n const preventDefaults = (e: React.DragEvent) => {\n e.preventDefault();\n e.stopPropagation();\n };\n\n return (\n

\n \n

\n );\n}\n\nfunction App() {\n return (\n

Image Stacker 🖼️

\n \n \n View Source\n \n

\n );\n}\n\nfunction client() {\n createRoot(document.getElementById(\"root\")).render();\n}\nif (typeof document !== \"undefined\") { client(); }\n\nexport default async function server(request: Request): Promise {\n return new Response(`\n \n \n Image Stacker\n \n \n \n

\n \n \n \n \n `, {\n headers: {\n \"content-type\": \"text/html\",\n },\n });\n}","deleted",false,"label",[35],{"_33":34,"_13":35,"_36":37,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":57,"_17":47,"_48":49,"_50":51,"_52":53,"_54":-5,"_58":59,"_18":60},["D",1735579824609],"children",[],[35],"5ca03578-2782-11f0-b46e-569c3dd06744",["D",1746210130169],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","description","imageUrl","userId","900a1ecc-26fd-4771-962a-c13dfb9ef64a","pinnedFileId","pinPreview","pinMigrated","screenshotVersion","likeCount","orgId","636fc787-66cd-4518-95de-3740f42b9de1","tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_11":12,"_113":109},"org",{"_11":12,"_107":-5,"_108":109,"_70":71,"_110":111,"_112":53},"branch",{"_17":42,"_13":16,"_33":40,"_99":61,"_100":-5,"_101":-5,"_102":-5,"_103":-5,"_104":-5,"_105":14,"_106":12},"isOwned","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","displayName","avatar","https://img.clerk.com/eyJ0eXBlIjoicHJveHkiLCJzcmMiOiJodHRwczovL2ltYWdlcy5jbGVyay5kZXYvb2F1dGhfZ2l0aHViL2ltZ18yYXJGSnhuRlpsMXE1ZnFWbElnbG15WlJKS0UifQ","tier","free","canRestrictVals","profileImageUrl","adoptOrgId",{"_33":61,"_13":14,"_45":147,"_63":-5,"_64":53,"_65":66,"_67":66,"_68":-5,"_69":-5,"_70":71,"_72":37,"_73":44,"_74":-5,"_75":-5,"_76":47,"_77":78,"_79":-5,"_80":-5,"_81":-5,"_82":-5,"_83":84,"_85":84,"_86":87,"_88":87,"_89":87,"_90":84,"_91":84,"_92":148,"_94":149,"_96":150,"_98":53},[144],"files",[144],"counts",{"_134":135,"_136":47,"_137":135,"_31":138,"_139":140},[132],"upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_33":34,"_13":35,"_36":37,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":46,"_17":47,"_48":49,"_50":51,"_52":53,"_54":-5,"_18":133},[35],"pulls",0,"branches","forks",{"_141":135,"_143":135},"connections",{"_141":135,"_142":135},"count","unfilledCount","emptyCount",{"_33":34,"_13":35,"_36":37,"_38":-5,"_39":40,"_41":42,"_43":44,"_45":57,"_17":47,"_48":49,"_50":51,"_52":53,"_54":-5,"_58":145,"_18":146},[],[35],["D",1746210130169],{"_11":12,"_113":109},{"_11":12,"_107":-5,"_108":109,"_70":71,"_110":111,"_112":53},{"_17":42,"_13":16,"_33":40,"_99":61,"_100":-5,"_101":-5,"_102":-5,"_103":-5,"_104":-5,"_105":14,"_106":12},"ctx",{"_92":-5,"_129":184,"_185":186,"_187":188,"_189":53,"_190":53,"_191":53,"_192":44,"_193":-5,"_194":-7,"_195":-7,"_196":135,"_197":53,"_198":53,"_199":-5,"_200":53,"_201":53,"_202":53,"_203":-5},"ENV",{"_155":156,"_157":158,"_159":16,"_160":161,"_162":163,"_164":165,"_166":167,"_168":169,"_170":171,"_172":173,"_174":175,"_176":177,"_178":179,"_180":181,"_182":183},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","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"]

Code