Tracker Detection Test Page

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Step 1: Visit these 3 first-party test sites

Each site is a separate domain and embeds the same demo tracker twice — once\n as <script src> and once in an <iframe>.

Test Site 1

Test Site 2

Test Site 3

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Step 2: Check what the tracker stored

Tracker ID: Not Found

Sites recorded by the tracker: Not Found

Raw tracker data:

Not Found

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This uses the /collect endpoint which visits each site's iframe\n context and collects the partitioned localStorage via postMessage. This bypasses storage\n partitioning to show what the tracker stored across all sites.

\n\n \n \n\n`;\n\n// Learn more: https://docs.val.town/vals/http/\nexport default async function (req: Request): Promise {\n const url = new URL(req.url);\n\n if (url.pathname === \"/\" || url.pathname === \"/test\") {\n const body = landingHtml\n .replace(\"__TRACKER_DOMAIN__\", TRACKER_DOMAIN)\n .replace(\"__SITE_1__\", SITE_1)\n .replace(\"__SITE_2__\", SITE_2)\n .replace(\"__SITE_3__\", SITE_3);\n\n return new Response(body, {\n headers: { \"content-type\": \"text/html; charset=utf-8\" },\n });\n }\n\n return new Response(\"Not found\", { status: 404 });\n}","label",[18],"pulls","branches","forks","envVars",{"_187":26,"_189":26},"connections",{"_187":26,"_188":26},"count","unfilledCount","emptyCount",{"_36":172,"_13":18,"_64":65,"_46":-5,"_38":39,"_173":96,"_174":114,"_40":191,"_42":89,"_66":79,"_176":177,"_68":24,"_178":14,"_192":193,"_17":194},["D",1787309743783],"children",[],[18],["D",1785495296185],{"_11":12,"_150":71},{"_11":12,"_145":146,"_70":71,"_30":69,"_147":148,"_149":24},{"_42":96,"_13":16,"_36":39,"_137":102,"_138":-5,"_139":-5,"_140":-5,"_141":-5,"_142":-5,"_143":14,"_144":12},"ctx",{"_54":-5,"_169":232,"_233":234,"_235":236,"_237":24,"_238":24,"_239":24,"_240":114,"_241":-5,"_242":-7,"_243":-7,"_244":26,"_245":24,"_246":24,"_247":-5,"_248":24,"_249":24,"_250":24,"_251":-5},"ENV",{"_203":204,"_205":206,"_207":16,"_208":209,"_210":211,"_212":213,"_214":215,"_216":217,"_218":219,"_220":221,"_222":223,"_224":225,"_226":227,"_228":229,"_230":231},"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"]

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