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: 4 of 6 checks found.
Initial HTML what a plain fetch receives
<!DOCTYPE html>
<html data-dpl-id="dpl_2WEtQCy8SVzwgQpCQdoczqsLefcD" lang="en" data-scroll-behavior="smooth">
<head>
<meta charSet="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
[... 79 more head elements folded ...]
<title>Optimizely - AI to create and optimize digital experiences
</title>
<meta name="description" content="Everything marketing and digital teams need to create content fast, test and personalize, and prove business impact."/>
[... 1 more head element folded ...]
<link rel="canonical" href="https://www.optimizely.com"/>
<link rel="alternate" hrefLang="x-default" href="https://www.optimizely.com"/>
<link rel="alternate" hrefLang="en" href="https://www.optimizely.com"/>
<link rel="alternate" hrefLang="de" href="https://www.optimizely.com/de"/>
[... 26 more head elements folded ...]
</head>
<body class="antialiased">
<div hidden=""><!--$--><!--/$-->
</div><!--&--><!--&--><!--$?--><template id="B:2"></template><!--/$-->
<main class="overflow-x-clip"><!--&-->
<div class="flex w-full flex-col bg-transparent pt-32 pb-24 px-4 mt-0 mb-0 justify-start lg:pb-32 md:px-8 lg:px-16 overflow-hidden relative" style="min-height:80vh;--separator-color:var(--color-tertiary-4);--timeline-bar-color:#0D3A29;--timeline-dot-color:#D8E4CB;--timeline-dot-active-color:#ABFF44"><img src="https://images3.cmp.optimizely.com/Zz03NDNhMDI0MjU2MDAxMWYxODFjYzE2ZGJmMWRhNDM3Ng==?width=1920" alt="" class="pointer-events-none absolute inset-0 size-full object-cover object-center" decoding="async" loading="eager" fetchPriority="high"/>
<div class="relative z-10 flex grow flex-col">
<div class="grid grid-cols-12 justify-items-center py-8 bg-transparent relative z-10" data-layout-row="">
<div class="flex flex-1 flex-col flex-nowrap justify-start col-span-10 lg:col-span-12 col-start-2 lg:col-start-1 items-center w-full" data-layout-column="">
<h1 class="w-full font-extrabold tracking-[-0.01em] font-henrietta text-11xl md:text-11xl lg:text-[117px] leading-[1.9] md:leading-[1.9] lg:leading-[2.5] text-left z-1 text-(--color-primary-lfgreen)"><span class="block"><!--$?--><template id="B:3"></template><span class="block w-full text-center"><span class="relative inline-block z-10"><span aria-hidden="true" class="inline-block whitespace-pre-wrap relative pointer-events-none select-none" style="-webkit-text-stroke:0.025em var(--color-fir-darkfir);paint-order:stroke fill;color:var(--color-extrusion-5);z-index:10">You're free to grow</span><span aria-hidden="true" class="inline-block whitespace-pre-wrap absolute inset-0 pointer-events-none select-none" style="-webkit-text-stroke:0.025em var(--color-fir-darkfir);paint-order:stroke fill;color:var(--color-extrusion-4);z-index:11;transform:translate(0.063em, -0.063em)">You're free to grow</span><span aria-hidden="true" class="inline-block whitespace-pre-wrap absolute inset-0 pointer-events-none select-none" style="-webkit-text-stroke:0.025em var(--color-fir-darkfir);paint-order:stroke fill;color:var(--color-extrusion-3);z-index:12;transform:translate(0.127em, -0.127em)">You're free to grow</span><span aria-hidden="true" class="inline-block whitespace-pre-wrap absolute inset-0 pointer-events-none select-none" style="-webkit-text-stroke:0.025em var(--color-fir-darkfir);paint-order:stroke fill;color:var(--color-extrusion-2);z-index:13;transform:translate(0.190em, -0.190em)">You're free to grow</span><span aria-hidden="false" class="inline-block whitespace-pre-wrap absolute inset-0" style="-webkit-text-stroke:0.025em var(--color-fir-darkfir);paint-order:stroke fill;color:var(--color-extrusion-1);z-index:14;transform:translate(0.254em, -0.254em)">You're free to grow</span></span></span><!--/$--></span>
</h1>
</div>
</div>
<div class="grid grid-cols-1 lg:grid-cols-12 py-0 bg-transparent relative z-10 container mx-auto mt-auto" data-layout-row="">
<div class="flex flex-1 flex-col flex-nowrap justify-start lg:col-span-3" data-layout-column="">
<div class="flex flex-col items-center gap-8 text-center lg:items-start lg:text-left">
<div data-epi-edit="BodyText" class="prose font-body lg:text-body-base max-w-none text-2xl/tight font-(--font-weight-body-medium) text-(--color-primary-lfgreen)">
<p>The AI platform to create and optimize every digital experience. So the experience-makers can do the work they love.
</p>
</div><a href="/get-started/" data-slot="button" class="inline-flex items-center justify-center gap-3 font-button font-(--font-weight-button) text-center transition-all cursor-pointer border-solid focus-visible:outline-2 focus [... 533 characters folded ...]>Let's grow</a>
</div>
</div>
</div>
</div>
</div>
<div class="forms-surface-light forms-field-on-white relative flex w-full flex-col bg-primary-1 pt-8 pb-0 px-2 -mt-6 mb-0 justify-start rounded-t-default lg:rounded-t-lg in-data-[split-half]:rounded-none! in-data-[split- [... 218 characters folded ...]>
<div class="container mx-auto flex grow flex-col justify-start">
<div class="flex flex-1 flex-col flex-nowrap lg:flex-row mt-0 md:mt-0 lg:mt-0 mb-0 md:mb-0 lg:mb-0 py-0 bg-transparent gap-x-4 gap-y-4" data-layout-row="">
</div>
</div>
</div>
<div class="forms-surface-light forms-field-on-white relative flex w-full flex-col bg-primary-1 pt-20 pb-8 px-0 mt-0 mb-0 justify-start rounded-t-default lg:rounded-t-lg in-data-[split-half]:rounded-none! lg:pt-20 lg:pb- [... 147 characters folded ...]>
<div class="flex flex-1 flex-col flex-nowrap lg:flex-row mt-0 mb-0 py-8 bg-transparent gap-x-4 gap-y-4" data-layout-row="">
<div class="flex flex-1 flex-col flex-nowrap justify-start gap-4" data-layout-column="">
<div class="element text-content-element px-0 pt-0 pr-0 pb-0 pl-0">
<div data-epi-edit="MainBody" class="prose prose-rte max-w-none prose-p-weight-medium">
<p style="text-align: center;">Trusted by 10,000+ brands
</p>
</div>
</div>
</div>
</div>
<div class="flex flex-1 flex-col flex-nowrap lg:flex-row mt-0 mb-0 py-8 bg-transparent gap-x-4 gap-y-4" data-layout-row="">
<div class="flex flex-1 flex-col flex-nowrap justify-start gap-4" data-layout-column="">
<div class="split-bleed relative w-full min-w-0 overflow-hidden contain-inline-size [&_img]:brightness-0" role="region" aria-roledescription="carousel" aria-label="Logo carousel">
<div class="flex items-center justify-center invisible">
<div class="flex shrink-0 items-center" style="gap:16px">
<div class="shrink-0" data-carousel-item="">
<div class="group inline-block rounded-xs p-px bg-(--color-tertiary-4)">
<div class="rounded-[11px] bg-(--color-tertiary-2) transition-all duration-200 ease-out group-active:translate-x-0 group-active:translate-y-0 group-hover:translate-x-0.5 group-hover:-translate-y-0.5">
<div class="flex flex-row items-center gap-5 py-1 pl-1 pr-10">
<div class="size-16 rounded-xxs bg-(--color-primary-3) flex shrink-0 items-center justify-center"><img alt="Nike" loading="lazy" width="32" height="32" decoding="async" data-nimg="1" class="object-contain" style="color:transparent" src="https://images4.cmp.optimizely.com/Zz03NTg2MGY0NjQ0NTQxMWYxODE1YTdlNjBjYjc3OGYxZg=="/>
</div>
<div class="flex flex-col gap-1"><span class="font-body text-body-xs font-normal leading-[1.3] text-(--color-secondary-darkfir)">Nike</span>
</div>
</div>
</div>
</div>
</div>
<div class="shrink-0" data-carousel-item="">
<div class="group inline-block rounded-xs p-px bg-(--color-tertiary-4)">
<div class="rounded-[11px] bg-(--color-tertiary-2) transition-all duration-200 ease-out group-active:translate-x-0 group-active:translate-y-0 group-hover:translate-x-0.5 group-hover:-translate-y-0.5">
<div class="flex flex-row items-center gap-5 py-1 pl-1 pr-10">
<div class="size-16 rounded-xxs bg-(--color-primary-3) flex shrink-0 items-center justify-center"><img alt="Zoom" loading="lazy" width="32" height="32" decoding="async" data-nimg="1" class="object-contain" style="color:transparent" src="https://images3.cmp.optimizely.com/Zz1iNGQ3OTg4YTQ0NWExMWYxYWY0YzhhNGEyZTdjMzU1YQ=="/>
</div>
<div class="flex flex-col gap-1"><span class="font-body text-body-xs font-normal leading-[1.3] text-(--color-secondary-darkfir)">Zoom</span>
</div>
</div>
</div>
</div>
</div>
<div class="shrink-0" data-carousel-item="">
<div class="group inline-block rounded-xs p-px bg-(--color-tertiary-4)">
<div class="rounded-[11px] bg-(--color-tertiary-2) transition-all duration-200 ease-out group-active:translate-x-0 group-active:translate-y-0 group-hover:translate-x-0.5 group-hover:-translate-y-0.5">
<div class="flex flex-row items-center gap-5 py-1 pl-1 pr-10">
<div class="size-16 rounded-xxs bg-(--color-primary-3) flex shrink-0 items-center justify-center"><img alt="Salesforce" loading="lazy" width="32" height="32" decoding="async" data-nimg="1" class="object-contain" style="color:transparent" src="https://images1.cmp.optimizely.com/Zz0wMDRlM2U2MjQ0NTcxMWYxYWVjYTUyNzY1OGQ1ZDg4OA=="/>
</div>
<div class="flex flex-col gap-1"><span class="font-body text-body-xs font-normal leading-[1.3] text-(--color-secondary-darkfir)">Salesforce</span>
</div>
</div>
</div>
</div>
</div>
<div class="shrink-0" data-carousel-item="">
<div class="group inline-block rounded-xs p-px bg-(--color-tertiary-4)">
<div class="rounded-[11px] bg-(--color-tertiary-2) transition-all duration-200 ease-out group-active:translate-x-0 group-active:translate-y-0 group-hover:translate-x-0.5 group-hover:-translate-y-0.5">
<div class="flex flex-row items-center gap-5 py-1 pl-1 pr-10">
<div class="size-16 rounded-xxs bg-(--color-primary-3) flex shrink-0 items-center justify-center"><img alt="Alaska Airlines" loading="lazy" width="32" height="32" decoding="async" data-nimg="1" class="object-contain" style="color:transparent" src="https://images1.cmp.optimizely.com/Zz1hYmM3ZWVlZTQ0NGExMWYxOGViZDUyNzY1OGQ1ZDg4OA=="/>
</div>
<div class="flex flex-col gap-1"><span class="font-body text-body-xs font-normal leading-[1.3] text-(--color-secondary-darkfir)">Alaska Airlines</span>
</div>
</div>
</div>
</div>
</div>
<div class="shrink-0" data-carousel-item="">
<div class="group inline-block rounded-xs p-px bg-(--color-tertiary-4)">
<div class="rounded-[11px] bg-(--color-tertiary-2) transition-all duration-200 ease-out group-active:translate-x-0 group-active:translate-y-0 group-hover:translate-x-0.5 group-hover:-translate-y-0.5">
<div class="flex flex-row items-center gap-5 py-1 pl-1 pr-10">
<div class="size-16 rounded-xxs bg-(--color-primary-3) flex shrink-0 items-center justify-center"><img alt="Visa" loading="lazy" width="32" height="32" decoding="async" data-nimg="1" class="object-contain" style="color:transparent" src="https://images4.cmp.optimizely.com/Zz1kOWE2ZmI2NjQ0NTkxMWYxYTQ1ZTIyMjRlMDkwMDUwMw=="/>
</div>
<div class="flex flex-col gap-1"><span class="font-body text-body-xs font-normal leading-[1.3] text-(--color-secondary-darkfir)">Visa</span>
</div>
</div>
</div>
</div>
</div>
<div class="shrink-0" data-carousel-item="">
<div class="group inline-block rounded-xs p-px bg-(--color-tertiary-4)">
<div class="rounded-[11px] bg-(--color-tertiary-2) transition-all duration-200 ease-out group-active:translate-x-0 group-active:translate-y-0 group-hover:translate-x-0.5 group-hover:-translate-y-0.5">
<div class="flex flex-row items-center gap-5 py-1 pl-1 pr-10">
<div class="size-16 rounded-xxs bg-(--color-primary-3) flex shrink-0 items-center justify-center"><img alt="Admiral" loading="lazy" width="32" height="32" decoding="async" data-nimg="1" class="object-contain" style="color:transparent" src="https://images4.cmp.optimizely.com/Zz03ODJlY2YwODQ0NGExMWYxYWIzYTg2ZjEzODRhZmFlZg=="/>
</div>
<div class="flex flex-col gap-1"><span class="font-body text-body-xs font-normal leading-[1.3] text-(--color-secondary-darkfir)">Admiral</span>
</div>
</div>
</div>
</div>
</div>
<div class="shrink-0" data-carousel-item="">
<div class="group inline-block rounded-xs p-px bg-(--color-tertiary-4)">
<div class="rounded-[11px] bg-(--color-tertiary-2) transition-all duration-200 ease-out group-active:translate-x-0 group-active:translate-y-0 group-hover:translate-x-0.5 group-hover:-translate-y-0.5">
<div class="flex flex-row items-center gap-5 py-1 pl-1 pr-10">
<div class="size-16 rounded-xxs bg-(--color-primary-3) flex shrink-0 items-center justify-center"><img alt="Santander" loading="lazy" width="32" height="32" decoding="async" data-nimg="1" class="object-contain" style="color:transparent" src="https://images2.cmp.optimizely.com/Zz04YTc4MjgyODY4NjAxMWYxODk3Y2NlODFmOWQwNDkxNQ=="/>
</div>
Shown with 149 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 426 KB.
Reading view the text a plain-fetch client can extract
title: Optimizely - AI to create and optimize digital experiences
You're free to grow You're free to grow You're free to grow You're free to grow You're free to grow
You're free to growYou're free to growYou're free to growYou're free to growYou're free to grow The AI platform to create and optimize every digital experience. So the experience-makers can do the work they love. Let's grow Trusted by 10,000+ brands Nike Zoom Salesforce Alaska Airlines Visa Admiral Santander Docusign mailchimp Calendly Allspring Global Investments TaxSlayer Tools to get you growing againgrowing againgrowing againgrowing againgrowing again Let your creators create Agentic CMS Publish faster and keep your entire site performing its best, automatically. Let's build Turn traffic into revenue Agentic Experimentation Continuously test, personalize, and optimize. Then prove your impact. Let's test Put AI agents to work Agent Platform Automate tasks, remove bottlenecks, and scale without adding headcount. Let's automate AI to make you unstoppableunstoppableunstoppableunstoppableunstoppable The infinite workforce your great ideas have been waiting for. Here to run your workflows, save you costs, and free your sanity. Try and stop me Yes, you can test here. And the rest! If you thought Optimizely was just for testing, think again. We're the AI platform for marketing that gives you all tools you need to create and optimize every digital experience. Take me to the platform One platform. Three paths to growth.Three
433 more words follow in the initial HTML.
| Check | Result | Detail |
|---|---|---|
| H1 in the initial HTML | Found one H1 | First H1: You're free to grow You're free to grow You're free to grow You're free to grow You're free to grow |
| First 200 words in the initial HTML | Found 200 of 200 words | The initial HTML carries 633 words of visible text; the first 200 are marked in the left pane. |
| llms.txt present and linked | Note present, not linked | 10751 bytes, 80 links. Structure grade A (6 of 6). Nothing on the home page points to it. Ora's lab found 86 percent of llms.txt fetches arrived through a link. |
| Markdown on request | Missing 200 text/html | Accept: text/markdown returned 200 with text/html; charset=utf-8. The server ignores the header. |
| 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 ImageObject, Organization, WebSite | 3 schema.org types in JSON-LD blocks on the home page: ImageObject, Organization, 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 optimizely.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