The Plain Fetch viewer
In short
The viewer requests a URL the way a plain-fetch agent does: no JavaScript, one request for HTML, one for markdown, one for llms.txt and one for a path that should not exist. It shows the initial HTML on the left, the readable text on the right, and seven flags underneath.
Pre-loaded with www.wikipedia.org, read 4 November 2026. Type any public URL to run your own.
The page answers a plain fetch: 6 of 6 checks found.
Initial HTML what a plain fetch receives
<!DOCTYPE html>
<html lang="en" data-expo-theme="true">
<head>
<meta charSet="utf-8" data-next-head=""/>
<meta name="viewport" content="width=device-width, initial-scale=1.0" data-next-head=""/>
<title data-next-head="">Expo documentation
</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" data-next-head=""/>
[... 4 more head elements folded ...]
<link rel="canonical" href="https://docs.expo.dev" data-next-head=""/>
<link rel="alternate" type="text/markdown" href="/index.md" data-next-head=""/>
[... 1 more head element folded ...]
<meta name="description" content="Build one JavaScript/TypeScript project that runs natively on all your users' devices." data-next-head=""/>
[... 37 more head elements folded ...]
</head>
<body class="text-pretty">
<div id="__next">
<div data-nested-scroll-layout="true" class="mx-auto flex h-(--nested-scroll-layout-height) w-full flex-col overflow-hidden">
<div class="max-lg:sticky">
<header class="relative z-10 mx-auto flex h-[60px] items-center justify-between gap-2 border-b border-default bg-default p-0 px-4">
<div class="flex items-center gap-8">
<div class="flex items-center gap-4"><a class="flex flex-row items-center gap-2 decoration-0 outline-offset-1 select-none" href="https://expo.dev">
<svg viewBox="0 0 71 20" fill="none" role="img" class="icon-md mt-px h-5 w-18 text-default max-md:hidden" title="Expo">[... 1,182 characters folded ...]
</svg>
<svg viewBox="0 0 20 20" fill="none" role="img" class="mr-1.5 hidden icon-lg text-default max-md:flex" title="Expo">[... 405 characters folded ...]
</svg></a><a class="flex flex-row items-center gap-2 decoration-0 outline-offset-1 select-none" href="/">
<div class="flex size-6 items-center justify-center rounded-sm bg-palette-blue4">
<svg viewBox="0 0 16 12" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" class="icon-sm">[... 682 characters folded ...]
</svg>
</div><span class="text-lg font-medium text-default select-none">Docs</span></a>
</div>
</div>
<div class="flex items-center gap-3"><a target="_blank" rel="noopener noreferrer" class="inline-flex border border-solid rounded-full font-medium items-center whitespace-nowrap transition gap-2 h-9 text-sm border-button-quaternary bg-button-quaternary shado [... 120 characters folded ...]><span class="flex self-center text-inherit leading-none select-none">Blog</span></a><a target="_blank" rel="noopener noreferrer" class="inline-flex border border-solid rounded-full font-medium items-center whitespace-nowrap transition gap-2 h-9 text-sm border-button-quaternary bg-button-quaternary shado [... 125 characters folded ...]><span class="flex self-center text-inherit leading-none select-none">Changelog</span></a><a target="_blank" rel="noopener noreferrer" class="inline-flex border border-solid rounded-full font-medium items-center whitespace-nowrap transition gap-2 h-9 text-sm border-button-quaternary bg-button-quaternary shado [... 133 characters folded ...]>
<svg viewBox="0 0 24 24" fill="currentColor" class="text-icon-default translate-z shrink-0 icon-sm group-hover:hidden group-focus-visible:hidden" role="img" aria-hidden="true">[... 993 characters folded ...]
</svg>
<svg viewBox="0 0 24 24" fill="currentColor" class="translate-z shrink-0 hidden icon-sm text-icon-warning group-hover:flex group-focus-visible:flex" role="img" aria-hidden="true">[... 1,620 characters folded ...]
</svg><span class="flex self-center text-inherit leading-none select-none">Star us on GitHub</span></a><a target="_blank" rel="noopener noreferrer" class="border border-solid rounded-full font-medium items-center whitespace-nowrap transition gap-2 h-9 text-sm border-button-quaternary bg-button-quaternary text-button-quate [... 148 characters folded ...]><span class="flex self-center text-inherit leading-none select-none">
<svg fill="none" viewBox="0 0 24 24" class="text-icon-default translate-z shrink-0 icon-lg" role="img" aria-hidden="true">[... 653 characters folded ...]
</svg></span></a>
<div class="max-lg:hidden"><button class="cursor-pointer border border-solid rounded-full font-medium items-center whitespace-nowrap transition gap-2 h-9 text-sm border-button-secondary bg-button-secondary text-button-secondary hocus:bg-button-sec [... 250 characters folded ...]><span class="flex self-center text-inherit leading-none"><span aria-label="auto" style="pointer-events:none"></span></span>
<svg viewBox="0 0 24 24" fill="currentColor" class="translate-z shrink-0 icon-sm text-icon-secondary" role="img" aria-hidden="true">[... 197 characters folded ...]
</svg></button><select aria-hidden="true" tabindex="-1" style="position:absolute;border:0;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0, 0, 0, 0);white-space:nowrap;word-wrap:normal"></select>
</div>
<div class="hidden max-lg:flex"><button class="cursor-pointer inline-flex border border-solid rounded-full font-medium items-center whitespace-nowrap transition gap-2 h-9 text-sm border-button-quaternary bg-button-quaternary text-button-quaternary shad [... 117 characters folded ...]><span class="flex self-center text-inherit leading-none">
<svg viewBox="0 0 24 24" fill="currentColor" class="text-icon-default translate-z shrink-0 icon-sm" role="img" aria-hidden="true">[... 246 characters folded ...]
</svg></span></button>
</div>
</div>
</header>
</div>
<div class="mx-auto flex h-[calc(100dvh-60px)] w-full items-center justify-between lg:[reading-flow:grid-rows] lg:grid lg:grid-rows-1 lg:grid-cols-[17.5rem_minmax(0,1fr)]">
<div class="relative flex h-[calc(var(--nested-scroll-layout-height)-60px)] w-full self-start overflow-hidden lg:col-start-2 lg:row-start-1 max-lg:overflow-auto">
<div class="size-full transform-gpu overflow-x-hidden overflow-y-auto" style="transform:translate3d(0, 0, 0)">
<div class="mx-auto max-w-screen-xl pb-[calc(var(--nested-scroll-layout-height)-100dvh)] transition-[padding,max-width,margin] duration-200 ease-out will-change-[padding,max-width,margin]">
<div class="pointer-events-none absolute z-10 h-8 w-[calc(100%-6px)] max-w-screen-xl bg-linear-to-b from-default to-transparent opacity-90">
</div>
<main class="mx-auto px-14 pt-10 max-lg:px-4 max-lg:pt-5">
<p class="sr-only">This documentation is available as Markdown for AI agents and LLMs. See the<!-- --> <a target="_blank" rel="noopener noreferrer" class="cursor-pointer decoration-0 hocus:opacity-80 font-normal text-link visited:text-link hocus:underline [&_code]:hocus:underline [&_b]:text-link [&_code]:text- [... 112 characters folded ...]>full Markdown index</a> <!-- -->or append .md to any documentation URL.
</p>
<div class="h-0">
<svg aria-hidden="true" width="0" height="0">[... 2,036 characters folded ...]
</svg>
</div>
<section data-home-section="quick-start">
<h1 class="text-inherit text-[31px] leading-[1.29] font-bold tracking-[-0.022rem] my-2 [&_code]:text-[90%] max-md:text-[27px] max-md:leading-[1.3333] max-sm:text-[23px] max-sm:leading-[1.3913] mt-1 border-0 pb-0 font-extrabold!" data-heading="true">Create amazing apps that run everywhere
</h1>
<p class="font-normal text-base [&_strong]:wrap-break-word mb-2 text-secondary" data-text="true">Build one JavaScript/TypeScript project that runs natively on all your users' devices.
</p>
<div class="my-4 inline-grid w-full grid-cols-2 gap-8 max-xl:grid-cols-1 max-lg:grid-cols-2 max-md:grid-cols-1">
<div class="relative overflow-hidden rounded-3xl border border-default px-6 py-5 shadow-xs [&_h2]:my-0! [&_h3]:mt-0! min-h-48 bg-element bg-cell-quickstart-pattern! bg-blend-multiply">
<div class="absolute inset-0 size-full rounded-3xl bg-linear-to-b from-subtle from-15% to-[#21262d00] dark:from-[#181a1b]">
</div>
<div class="relative z-10 flex flex-col gap-4">
<h2 class="heading-xl font-bold">
<svg aria-hidden="true" class="float-left mt-1.5 mr-3" width="18" height="23" viewBox="0 0 18 23" fill="none" xmlns="http://www.w3.org/2000/svg">[... 226 characters folded ...]
</svg> Quick Start
</h2>
<div>
<div class="mb-4 flex flex-col overflow-clip last:mb-0 terminal-snippet [li_&]:mt-4 rounded-md asset-shadow" data-md="terminal" data-md-commands="["$ npx create-expo-app@latest"]">
<div data-md="snippet-header" class="flex min-h-10 justify-between overflow-hidden border border-default bg-default rounded-t-3xl border-b-0 pl-3 dark-theme bg-palette-gray3! pr-2 dark:border-transparent"><span class="text-[15px] leading-[1.6] tracking-[-0.009rem] flex min-h-10 w-full items-center gap-2 overflow-x-auto py-1 pr-4 leading-tight! font-medium text-palette-white" data-text="true">
<svg viewBox="0 0 24 24" fill="currentColor" class="text-icon-default translate-z icon-sm shrink-0" role="img" aria-hidden="true">[... 1,114 characters folded ...]
</svg><span class="w-max max-w-[60dvw] truncate wrap-break-word">Terminal</span></span>
<div class="flex items-center justify-end">
<div class="flex items-center gap-2"><button class="cursor-pointer inline-flex border border-solid rounded-full font-medium items-center whitespace-nowrap transition h-8 px-3 text-xs text-button-quaternary shadow-none active:scale-98 gap-1.5 focus-visible:- [... 206 characters folded ...]>
<svg viewBox="0 0 24 24" fill="currentColor" class="translate-z shrink-0 icon-sm text-icon-secondary" role="img" aria-hidden="true">[... 1,167 characters folded ...]
</svg><span class="flex self-center text-inherit leading-none">
<p class="text-inherit font-normal text-xs text-palette-white!" data-text="true">Copy
</p></span></button>
</div>
</div>
</div>
<div data-md="code-block" class="[scrollbar-color:var(--slate-5)_transparent] relative scrollbar-thin overflow-x-auto rounded-b-3xl border p-4 leading-4.5! text-default prose-code:px-0! dark-theme border-transparent bg-palette-black whitespace-nowrap flex flex-col">
<div class="w-fit"><code class="text-inherit text-xs leading-[130%] font-normal inline-block rounded-md border border-secondary bg-subtle px-1 py-0.5 border-none! bg-transparent! whitespace-pre text-secondary! select-none" data-text="true" data-md="skip">- </code><code class="text-xs leading-[130%] font-normal inline-block rounded-md border border-secondary bg-subtle px-1 py-0.5 border-none! bg-transparent! whitespace-pre text-default" data-text="true"><span class="token function">npx</span> create-expo-app@latest</code>
</div>
</div>
</div>
<p class="font-normal text-[14px] leading-[1.5715] tracking-[-0.006rem] text-secondary" data-text="true">Then continue<!-- --> <a class="cursor-pointer decoration-0 hocus:opacity-80 font-normal text-link visited:text-link hocus:underline [&_code]:hocus:underline [&_b]:text-link [&_code]:text-link [&_em]:text-link [&_i]:text-l [... 98 characters folded ...]>setting up your environment</a>.
</p>
</div>
</div>
</div>
<div class="overflow-hidden rounded-3xl border px-6 py-5 shadow-xs [&_h2]:my-0! [&_h3]:mt-0! relative z-0 min-h-48 border-palette-blue6 bg-palette-blue4 bg-cell-tutorial-pattern! bg-blend-multiply dark:bg-palette-blue3 dark:bg-blend-color-burn">
<div class="absolute inset-0 size-full rounded-3xl bg-linear-to-b from-palette-blue3 from-15% to-[#201d5200] dark:from-palette-blue3 dark:to-transparent">
</div>
<svg aria-hidden="true" class="absolute right-0 bottom-0 z-1 max-w-[60%] asset-shadow max-lg:-bottom-4 max-sm:-bottom-8" width="354" height="164" viewBox="0 0 354 164" fill="none" xmlns="http://www.w3.org/2000/svg">[... 9,690 characters folded ...]
</svg>
<h2 class="relative z-10 max-w-[24ch] heading-xl font-bold text-palette-blue12">Create a universal Android, iOS, and web app
</h2><a class="inline-flex border border-solid rounded-full font-medium items-center whitespace-nowrap transition gap-2 h-9 text-sm active:scale-98 absolute bottom-7 z-10 px-3.5 hocus:opacity-80 border-palette-blue11 bg-palet [... 124 characters folded ...]><span class="flex self-center text-inherit leading-none select-none">Start tutorial</span>
<svg viewBox="0 0 24 24" fill="currentColor" class="translate-z shrink-0 text-button-primary-icon icon-md" role="img" aria-hidden="true">[... 241 characters folded ...]
</svg></a>
</div>
<div class="relative rounded-3xl px-6 py-5 shadow-xs [&_h2]:my-0! [&_h3]:mt-0! min-h-48 overflow-hidden bg-linear-to-br from-[#F3E5F5] via-[#E3F2FD] to-[#E3F2FD] border border-palette-gray7 selection:bg-palette-b [... 85 characters folded ...]>
<div class="absolute inset-0 size-full rounded-3xl bg-linear-to-br from-palette-blue3 via-palette-purple3 to-palette-blue3 opacity-5 dark:from-palette-blue3 dark:via-palette-purple3 dark:to-palette-blue3 dark:opacity-20">
</div>
<div class="absolute inset-0 opacity-30">
<div class="absolute top-8 left-12 size-1 animate-pulse rounded-full bg-palette-blue9 dark:bg-palette-white">
</div>
<div class="absolute top-16 right-20 size-0.5 animate-pulse rounded-full bg-palette-purple8 delay-1000 dark:bg-palette-blue8">
</div>
<div class="absolute bottom-12 left-24 size-0.5 animate-pulse rounded-full bg-palette-blue9 delay-500 dark:bg-palette-white">
</div>
<div class="absolute top-24 right-8 size-1 animate-pulse rounded-full bg-palette-purple7 delay-75 dark:bg-palette-blue7">
</div>
<div class="absolute right-32 bottom-8 size-0.5 animate-pulse rounded-full bg-palette-blue9 delay-300 dark:bg-palette-white">
</div>
</div>
<svg viewBox="0 0 24 24" fill="currentColor" class="icon-md translate-z shrink-0 absolute -right-12 -bottom-20 size-80! rotate-12 text-palette-blue9 opacity-[0.08] dark:opacity-[0.03]" role="img" aria-hidden="true">[... 1,325 characters folded ...]
</svg>
<div class="relative z-10 flex flex-col gap-4">
<h2 class="flex items-center gap-3 heading-lg font-bold! text-palette-gray12! dark:text-palette-white!">
<div class="rounded-lg bg-linear-to-br from-palette-blue9 to-palette-purple9 p-2 shadow-lg">
<svg viewBox="0 0 24 24" fill="currentColor" class="translate-z shrink-0 icon-lg text-palette-white" role="img" aria-hidden="true">[... 1,325 characters folded ...]
</svg>
</div>Launch to app stores
</h2>
<div>
<p class="text-inherit font-normal text-base [&_strong]:wrap-break-word mb-4 max-w-[80ch] text-sm! leading-relaxed text-palette-gray11! dark:text-palette-blue11!" data-text="true">Ship apps with zero config or no prior experience. Launch easily guides you through the technical stuff, directly from GitHub. No config or prior knowledge needed.
</p><a target="_blank" rel="noopener noreferrer" class="inline-flex border-solid rounded-full items-center whitespace-nowrap transition gap-2 h-9 text-sm active:scale-98 absolute bottom-7 z-10 px-3.5 hocus:opacity-80 relativ [... 321 characters folded ...]><span class="flex self-center text-inherit leading-none select-none">Try Launch</span>
<svg viewBox="0 0 24 24" fill="currentColor" class="translate-z shrink-0 icon-md text-palette-black" role="img" aria-hidden="true">[... 215 characters folded ...]
</svg></a>
Shown with 182 long blocks (scripts, styles, long tags) folded into a marker that says how many characters they hide; line breaks added before block tags because the source is minified; the pane stops after the first 200 words; the page is 202 KB.
Reading view the text a plain-fetch client can extract
title: Expo documentation
Create amazing apps that run everywhere
Docs Blog Changelog Star us on GitHub This documentation is available as Markdown for AI agents and LLMs. See the full Markdown index or append .md to any documentation URL. Create amazing apps that run everywhere Build one JavaScript/TypeScript project that runs natively on all your users' devices. Quick Start Terminal Copy - npx create-expo-app@latest Then continue setting up your environment . Create a universal Android, iOS, and web app Start tutorial Launch to app stores Ship apps with zero config or no prior experience. Launch easily guides you through the technical stuff, directly from GitHub. No config or prior knowledge needed. Try Launch Automate builds and releases with Expo Workflows Start CI/CD Tutorial Deploy from CLI Deploy your apps using command-line tools for iOS and web platforms. Deploy to TestFlight Terminal Copy - npx testflight This is an iOS-only command that will upload your app to TestFlight. Deploy your web app Terminal Copy - npx eas-cli deploy For prerequisites and complete instructions, see our guide . Discover more Try out Expo in minutes and learn how to get the most out of Expo. Speed up your development with Expo Services Start Expo Services Tutorial Discover the benefits of file-based
442 more words follow in the initial HTML.
| Check | Result | Detail |
|---|---|---|
| H1 in the initial HTML | Found one H1 | First H1: Create amazing apps that run everywhere |
| First 200 words in the initial HTML | Found 200 of 200 words | The initial HTML carries 642 words of visible text; the first 200 are marked in the left pane. |
| llms.txt present and linked | Found present and linked | 62611 bytes, 620 links. Structure grade A (6 of 6). The home page links it, which is how agents reached it in Ora's lab. |
| Markdown on request | Found text/markdown | Accept: text/markdown returned 200 with text/markdown; charset=utf-8. Vary: Accept is set. |
| Status of a made-up path | Found 404 | /agent-ready-html-missing-path-check returned 404: a real status code for a missing page. |
| JSON-LD types | Found ContactPoint, ImageObject, Organization, PostalAddress and 1 more | 5 schema.org types in JSON-LD blocks on the home page: ContactPoint, ImageObject, Organization, PostalAddress, WebSite. |
| OpenAPI link | Note none on the home page | No OpenAPI link on the home page. It matters only for a site that ships an API. |
Run the full check
The viewer read one page with four requests. The full check we recommend next is Ora's scan. Its Access layer runs 42 checks worth 30 of its 100 points, among them content without JavaScript, bot detection, llms.txt, markdown on request, JSON-LD and the sitemap (Ora's check catalogue, contract 1.38.0, read 5 November 2026). Open Ora's report for docs.expo.dev.
Limits: Ora reads public URLs only, says two runs of one scan land within a couple of points without publishing repeat-scan data, and keeps the product that fixes what it finds behind a waitlist. Cloudflare's scanner at isitagentready.com is a quick free alternative, and Mintlify's score covers documentation.
What the viewer does
It sends four plain GET requests with the user agent Mozilla/5.0 (compatible; agent-readiness-crawl/1.0): the URL itself, the same URL with Accept: text/markdown, /llms.txt on the same host, and a made-up path at the root. It runs no JavaScript. The left pane is the first bytes of the HTML as text, with long scripts and styles folded into a marker that says how many characters they hide. The H1 and the first 200 words of visible text are marked in both panes. The flags under the panes say what the four responses added up to.
Limits
- Ten seconds for all four requests together, 1.5 MB read from the home page, at most five redirects, each one checked again.
- http and https only, default ports only. Private, local and internal addresses and names are refused.
- Ten runs per address per minute. The counter lives in memory on the edge function, so it is per instance rather than global. Past ten you get a 429 with a Retry-After header.
- Results are cached for 24 hours by the response headers. Nothing is written to a database: the viewer keeps the first 200 words and the extracted fields for the length of the request and keeps no page body beyond that.
What it does not tell you
A plain fetch from this server is not a real agent. Bot protection weighs the source address more than the user agent, so a page that answers 200 here can still refuse an agent, and the reverse. Ora's lab found (2026-10-19) that returning 403 to agent user agents and hiding the answer in JavaScript were the only two of 19 configurations that stopped retrieval; the viewer can see the second, and can only hint at the first. The initial HTML reference covers both. The server logs and the published crawler address ranges settle the first.
The seven flags
- H1 in the initial HTML
- Whether the HTML the server sends already contains an H1. It is the cheapest sign that the page does not depend on scripts to say what it is.
- First 200 words in the initial HTML
- Whether at least 200 words of visible text arrive in the initial HTML. Under 40 words with an app root element is flagged as a JavaScript shell.
- llms.txt present and linked
- Whether /llms.txt answers with a plain-text file, whether the home page links it (an anchor, a link element or a Link header), and the structure grade the index uses.
- Markdown on request
- Whether a request with Accept: text/markdown comes back as text/markdown. Cloudflare Radar found 3.9 percent of scanned top sites passing this at its April 2026 launch.
- Status of a made-up path
- Whether a path that should not exist returns 404 or 410. A 200 is a soft 404 and reads as a live page.
- JSON-LD types
- The schema.org types found in JSON-LD blocks on the page. Ora's lab found JSON-LD made no difference when the answer was already in the HTML.
- OpenAPI link
- Whether the page links an OpenAPI file, by an anchor or a service-desc link relation. It matters only for a site that ships an API.
Sources
- Ora: AgentReady launch post (Ora's lab findings) https://ora.ai/blog/agentready-launch, read 4 November 2026
- Ora check catalogue, contract 1.38.0 (132 checks, 42 in the Access layer) https://ora.ai/api/checks, read 5 November 2026
- Ora home page (the fixing product is behind a waitlist) https://ora.ai/, read 5 November 2026
- Ora: Introducing Deep Scan (repeat scans) https://ora.ai/blog/introducing-deep-scan, read 5 November 2026
- Ora llms.txt (public URLs only) https://ora.ai/llms.txt, read 5 November 2026
- Vercel: Make your site readable by AI agents https://vercel.com/kb/guide/make-your-site-readable-by-ai-agents, read 4 November 2026
- llms.txt proposal (llmstxt.org) https://llmstxt.org/, read 4 November 2026
Last reviewed 5 November 2026