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 7 checks found.
Initial HTML what a plain fetch receives
<!DOCTYPE html>
<html data-dpl-id="bf30ec2f37e0" lang="en" class="[--nav-bar-height:47px] lg:[--nav-bar-height:66px]">
<head>
<meta charSet="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/>
[... 71 more head elements folded ...]
<title>Render | The cloud for builders
</title>
<meta name="description" content="Deploy and scale any app or agent from your first user to your billionth. Build faster on intuitive cloud infrastructure for the modern web."/>
<meta name="robots" content="index, follow"/>
[... 1 more head element folded ...]
<link rel="canonical" href="https://render.com"/>
[... 19 more head elements folded ...]
</head>
<body>
<div hidden=""><!--$--><!--/$-->
</div>
<div class="vvzO_a_variable ZNnsOq_variable PIxOEW_variable font-montreal">
<main class="bg-background text-text-primary min-h-screen">
<div class="text-body-xs text-primary flex w-full flex-wrap items-center justify-center gap-6 gap-y-4 px-12 py-6 print:hidden bg-promo-bg">
<p class="inline-block leading-snug">Introducing Render Sandboxes: a computer for every agent.
</p><a class="group/btn text-body-xxs text-iris-700 dark:text-iris-300 relative rounded-sm border border-current px-6 leading-5" href="/sandboxes">
<div class="absolute inset-0 origin-right scale-x-0 bg-current transition-transform group-hover/btn:origin-left group-hover/btn:scale-x-100">
</div>
<div class="group-hover/btn:text-text-primary--inverted relative transition-colors">Learn more
</div></a>
</div>
<header class="bg-background z-header sticky top-0">
<div class="mx-auto flex h-60 max-w-screen-2xl items-center gap-[48px] px-16 sm:px-24 lg:px-32 mx-auto max-w-screen-2xl"><a href="/">
<svg width="110" height="21" viewBox="0 0 110 21" fill="none" xmlns="http://www.w3.org/2000/svg" aria-label="Render" class="fill-current">[... 2,846 characters folded ...]
</svg></a>
<nav id="_R_19f9db_" class="max-lg:bg-background inset-x-0 top-full max-lg:absolute max-lg:max-h-[calc(100dvh-var(--header-bottom,0px))] max-lg:overflow-y-auto max-lg:overscroll-contain max-lg:border-y max-lg:transition-all max-lg:motion-reduce:transition-none max-lg:invisible max-lg:opacity-0">
<ul class="gap-24 max-lg:px-24 max-lg:py-8 max-sm:px-16 lg:flex">
<li>
<div class="group flex-col gap-8 max-lg:flex" data-state="closed"><button type="button" aria-expanded="false" aria-controls="_R_6l9f9db_" class="header-nav-item relative">Product
<svg aria-hidden="true" class="lg:fill-text-faint size-12 shrink-0 fill-current lg:size-8" viewBox="0 0 8 8"><path d="m6.942 3.442-2.5 2.5L4 6.384l-.442-.442-2.5-2.5.884-.884L4 4.615l2.058-2.057z"></path>
</svg><span class="absolute inset-x-0 top-full h-12"></span></button>
<div id="_R_6l9f9db_" class="lg:bg-background inset-x-0 top-full lg:absolute lg:border-y lg:invisible lg:opacity-0 lg:transition-all lg:motion-reduce:transition-none max-lg:hidden">
<div class="mx-auto max-w-screen-2xl grid-cols-4 flex-col gap-20 max-lg:flex max-lg:pb-24 lg:grid lg:gap-16 lg:px-32 lg:pt-12 lg:pb-20">
<div class="grid auto-cols-fr gap-24 sm:grid-flow-col lg:col-span-3 lg:gap-32 lg:py-20">
<div class="flex flex-col gap-12">
<div class="text-text-faint flex flex-col gap-2">
<div class="text-xs font-medium tracking-[0.08em] uppercase">Agent execution
</div>
</div>
<ul class="flex flex-col gap-16">
<li><a href="/sandboxes" class="group/link flex flex-col gap-12">
<div class="flex flex-col gap-2">
<div class="flex items-center gap-10"><span class="font-medium tracking-[0.16px]"><span class="relative">Sandboxes
<div class="absolute inset-x-0 bottom-0 h-1 origin-left scale-x-0 bg-current transition-transform group-hover/link:scale-x-100 motion-reduce:transition-none">
</div></span></span><span class="flex h-20 items-center rounded-[3px] border px-6 text-[11px] leading-none tracking-[0.44px] text-[#581CCB] uppercase dark:border-[#332D5D] dark:text-[#CDCEFB]">Beta</span>
</div>
<div class="text-text-faint text-sm tracking-[0.14px]">Give agents an isolated computer
</div>
</div></a>
</li>
<li><a href="/workflows" class="group/link flex flex-col gap-12">
<div class="flex flex-col gap-2">
<div class="flex items-center gap-10"><span class="font-medium tracking-[0.16px]"><span class="relative">Workflows
<div class="absolute inset-x-0 bottom-0 h-1 origin-left scale-x-0 bg-current transition-transform group-hover/link:scale-x-100 motion-reduce:transition-none">
</div></span></span>
</div>
<div class="text-text-faint text-sm tracking-[0.14px]">Orchestrate dynamic background work
</div>
</div></a>
</li>
</ul>
</div>
<div class="flex flex-col gap-12">
<div class="text-text-faint flex flex-col gap-2">
<div class="text-xs font-medium tracking-[0.08em] uppercase">Core compute
</div>
</div>
<ul class="flex flex-col gap-16">
<li><a href="/docs/web-services" class="group/link flex flex-col gap-12">
<div class="flex flex-col gap-2">
<div class="flex items-center gap-10"><span class="font-medium tracking-[0.16px]"><span class="relative">Web services
<div class="absolute inset-x-0 bottom-0 h-1 origin-left scale-x-0 bg-current transition-transform group-hover/link:scale-x-100 motion-reduce:transition-none">
</div></span></span>
</div>
<div class="text-text-faint text-sm tracking-[0.14px]">Host dynamic web apps at a public URL
</div>
</div></a>
</li>
<li><a href="/docs/private-services" class="group/link flex flex-col gap-12">
<div class="flex flex-col gap-2">
<div class="flex items-center gap-10"><span class="font-medium tracking-[0.16px]"><span class="relative">Private services
<div class="absolute inset-x-0 bottom-0 h-1 origin-left scale-x-0 bg-current transition-transform group-hover/link:scale-x-100 motion-reduce:transition-none">
</div></span></span>
</div>
<div class="text-text-faint text-sm tracking-[0.14px]">Host apps for internal traffic
</div>
</div></a>
</li>
<li><a href="/docs/background-workers" class="group/link flex flex-col gap-12">
<div class="flex flex-col gap-2">
<div class="flex items-center gap-10"><span class="font-medium tracking-[0.16px]"><span class="relative">Background workers
<div class="absolute inset-x-0 bottom-0 h-1 origin-left scale-x-0 bg-current transition-transform group-hover/link:scale-x-100 motion-reduce:transition-none">
</div></span></span>
</div>
<div class="text-text-faint text-sm tracking-[0.14px]">Offload asynchronous jobs
</div>
</div></a>
</li>
<li><a href="/docs/cronjobs" class="group/link flex flex-col gap-12">
<div class="flex flex-col gap-2">
<div class="flex items-center gap-10"><span class="font-medium tracking-[0.16px]"><span class="relative">Cron jobs
<div class="absolute inset-x-0 bottom-0 h-1 origin-left scale-x-0 bg-current transition-transform group-hover/link:scale-x-100 motion-reduce:transition-none">
</div></span></span>
</div>
<div class="text-text-faint text-sm tracking-[0.14px]">Schedule recurring workloads
</div>
</div></a>
</li>
<li><a href="/docs/static-sites" class="group/link flex flex-col gap-12">
<div class="flex flex-col gap-2">
<div class="flex items-center gap-10"><span class="font-medium tracking-[0.16px]"><span class="relative">Static sites
<div class="absolute inset-x-0 bottom-0 h-1 origin-left scale-x-0 bg-current transition-transform group-hover/link:scale-x-100 motion-reduce:transition-none">
</div></span></span>
</div>
<div class="text-text-faint text-sm tracking-[0.14px]">Deploy websites for free, forever
</div>
</div></a>
</li>
</ul>
</div>
<div class="flex flex-col gap-12">
<div class="text-text-faint flex flex-col gap-2">
<div class="text-xs font-medium tracking-[0.08em] uppercase">Managed data
</div>
</div>
<ul class="flex flex-col gap-16">
<li><a href="/shared-filesystems" class="group/link flex flex-col gap-12">
<div class="flex flex-col gap-2">
<div class="flex items-center gap-10"><span class="font-medium tracking-[0.16px]"><span class="relative">Shared filesystems
<div class="absolute inset-x-0 bottom-0 h-1 origin-left scale-x-0 bg-current transition-transform group-hover/link:scale-x-100 motion-reduce:transition-none">
</div></span></span><span class="flex h-20 items-center rounded-[3px] border px-6 text-[11px] leading-none tracking-[0.44px] text-[#581CCB] uppercase dark:border-[#332D5D] dark:text-[#CDCEFB]">Early Access</span>
</div>
<div class="text-text-faint text-sm tracking-[0.14px]">Share persistent files across sandboxes
</div>
Shown with 288 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 781 KB.
Reading view the text a plain-fetch client can extract
title: Render | The cloud for builders
Your fastest path to production for Y o u r f a s t e s t p a t h t o p r o d u c t i o n f o r any workload any workload a n y w o r k l o a d apps & agents a p p s & a g e n t s workflows w o r k f l o w s APIs & web apps A P I s & w e b a p p s data pipelines d a t a p i p e l i n e s HIPAA apps H I P A A a p p s
Introducing Render Sandboxes: a computer for every agent. Learn more Product Agent execution Sandboxes Beta Give agents an isolated computer Workflows Orchestrate dynamic background work Core compute Web services Host dynamic web apps at a public URL Private services Host apps for internal traffic Background workers Offload asynchronous jobs Cron jobs Schedule recurring workloads Static sites Deploy websites for free, forever Managed data Shared filesystems Early Access Share persistent files across sandboxes Postgres DBs Run enterprise-grade DBs at scale Key Value stores Provision Redis-compatible datastores Persistent disks Preserve filesystem changes for services Ship faster Native runtimes Full-stack PR previews Zero-downtime deploys Infrastructure-as-code Scale and secure Automatic private networking Load-based autoscaling DDoS protection HIPAA applications Solutions Use cases Render + Coding Agents By company Startups HIPAA Compliance Customers How OpenAI’s DX team builds breakout apps on Render All customer stories → Migrate Migration Credits Heroku Migration Guide Railway Migration Guide Resources Build Templates Framework Quickstarts Community Find a Render Expert Stay current Changelog Status Blog Introducing Render Sandboxes: A computer for every agent Read the blog → Company About Us Careers Newsroom Brand Kit Security Contact Docs Pricing Migrate to Render Sign in Get started body Services Render Sandboxes Render Workflows
990 more words follow in the initial HTML.
| Check | Result | Detail |
|---|---|---|
| H1 in the initial HTML | Found one H1 | First H1: Your fastest path to production for Y o u r f a s t e s t p a t h t o p r o d u c t i o n f o r any workload any workload a n y w o r k l o a d apps & agents a p p s & a g e n t s workflows w o r k f l o w s APIs & web apps A P I s & w e b a p p s data pipelines d a t a p i p e l i n e s HIPAA apps H I P A A a p p s |
| First 200 words in the initial HTML | Found 200 of 200 words | The initial HTML carries 1190 words of visible text; the first 200 are marked in the left pane. |
| llms.txt present and linked | Found present and linked | 5342 bytes, 6 links. Structure grade C (4 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 | Missing 200 (soft 404) | /agent-ready-html-missing-path-check returned 200. A missing page that answers 200 looks like a live page to an agent. |
| JSON-LD types | Found Offer, Organization, Person, QuantitativeValue and 2 more | 6 schema.org types in JSON-LD blocks on the home page: Offer, Organization, Person, QuantitativeValue, SoftwareApplication, WebSite. |
| OpenAPI link | Found linked | The home page links an OpenAPI file. 97 percent of openapi.json fetches in Ora's lab arrived through a link. |
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 onrender.com.
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