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 xmlns:fb="http://ogp.me/ns/fb#" itemtype="http://schema.org" lang="en" dir="ltr" data-color-theme="{{{colorTheme}}}">
<head>
[... 2 more head elements folded ...]
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=IE7">
<meta charset="utf-8">
[... 10 more head elements folded ...]
<meta name="viewport" content="width=device-width, initial-scale=1">
[... 27 more head elements folded ...]
<title data-rh="true">Coursera | Online Courses, Certificates, & Degrees
</title>
[... 3 more head elements folded ...]
<meta data-rh="true" name="description" content="Learn job-ready skills with online courses, Professional Certificates, Specializations, and degrees from Google, Meta, Anthropic, DeepLearning.AI, Stanford, and more. Start learning today."/>
[... 9 more head elements folded ...]
<link data-rh="true" rel="canonical" href="https://www.coursera.org"/>
[... 4 more head elements folded ...]
<link data-rh="true" rel="alternate" hreflang="x-default" href="https://www.coursera.org/"/>
<link data-rh="true" rel="alternate" hreflang="en" href="https://www.coursera.org/"/>
[... 7 more head elements folded ...]
</head>
<body>
<div id="fb-root">
</div>
<div id="rendered-content">
<div class="rc-MetatagsWrapper"><span data-catchpoint="page-header-controls" data-testid="logged-out-desktop-header">
<div class="rc-GlobalPageHeaderContainer css-1ch79bo">
<nav data-testid="page-header-wrapper" data-e2e="page-header" class="css-1pf5qcx">
<div class="css-u0kpwc">
<div class="cds-1 css-j55dmx cds-2 cds-7">
<div class="cds-9 css-1kspkkz cds-10">
<div class="cds-9 css-1wpuh84 cds-11 cds-grid-item cds-56">
<div class="css-az8ufr">
<div role="navigation" aria-label="Banner" class="css-j6ha89">
<ul class="css-f31nvc">
<li class="css-1dswftd"><a data-click-key="front_page.front_page_story.click.navigation_meta_nav_Individuals" data-click-value="{"href":"https://www.coursera.org/","namespace":{"action":"click", [... 541 characters folded ...]><span><span class="forStyle css-1rkctw9">For</span> Individuals</span></a>
</li>
<li class="css-1dswftd"><a data-click-key="front_page.front_page_story.click.navigation_meta_nav_Business" data-click-value="{"href":"https://www.coursera.org/business?utm_content=corp-to-home-for-enterprise&utm_campaign=webs [... 1064 characters folded ...]><span><span class="forStyle css-1rkctw9">For</span> Businesses</span></a>
</li>
<li class="css-1dswftd"><a data-click-key="front_page.front_page_story.click.navigation_meta_nav_Campus" data-click-value="{"href":"https://www.coursera.org/campus?utm_content=corp-to-landing-for-campus&utm_campaign=website&a [... 1046 characters folded ...]><span><span class="forStyle css-1rkctw9">For</span> Universities</span></a>
</li>
<li class="css-1dswftd"><a data-click-key="front_page.front_page_story.click.navigation_meta_nav_Government" data-click-value="{"href":"https://www.coursera.org/government?utm_content=corp-to-landing-for-government&utm_campai [... 1090 characters folded ...]><span><span class="forStyle css-1rkctw9">For</span> Governments</span></a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="css-1r5c520">
<div class="cds-1 main-nav-container css-ys0mpv cds-2 cds-7">
<div class="cds-9 css-1kspkkz cds-10">
<div class="cds-9 css-rjm5sh cds-10 cds-11 cds-grid-item cds-56">
<div class="cds-9 css-le7uaf cds-10 cds-11 cds-grid-item cds-18">
<div class="cds-9 css-0 cds-11 cds-grid-item"><a data-click-key="front_page.front_page_story.click.logo" data-click-value="{"href":"/","namespace":{"action":"click","app":"front_page","compon [... 353 characters folded ...]>
<div class="css-guxf6x">
<div>
<svg viewBox="0 0 1155 164" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Coursera" class="css-c2g0tf">[... 2,071 characters folded ...]
</svg>
</div>
</div></a>
</div>
<div class="cds-9 css-0 cds-11 cds-grid-item">
<div class="rc-ExploreMegaMenuGridItem css-fyi4l2">
<div data-testid="simplified-megaMenu-wrapper"><button class="cds-149 cds-button-disableElevation cds-button-ghost css-85fxzz" tabindex="0" type="button" data-testid="megamenu-explore-button" aria-expanded="false" aria-label="Explore our catalog"><span class="cds-button-label">Explore<span class="cds-button-endIcon">
<svg aria-hidden="true" fill="none" focusable="false" height="20" viewBox="0 0 20 20" width="20" id="cds-react-aria-:R3badajalakcq:" class="css-1u8qly9">[... 297 characters folded ...]
</svg></span></span></button>
</div>
</div>
</div>
<div class="cds-9 css-0 cds-11 cds-grid-item"><a class="cds-149 cds-button-disableElevation cds-button-ghost css-74qkcm" tabindex="0" role="button" href="/degrees" data-testid="nav-link-grid-item-degrees"><span class="cds-button-label">Degrees</span></a>
</div>
</div>
<div class="cds-9 css-1qf9240 cds-10 cds-11 cds-grid-item cds-18">
<div class="css-15st4kj">
<div class="rc-SearchBarContentWrapper css-ueaybp">
<form class="search-form css-14o2hni" role="search">
<div class="rc-SearchBarContent">
<div class="cds-Search-base cds-Search-default css-1yhag6x" data-testid="search-autocomplete">
<div data-testid="visually-hidden" aria-live="polite" id="cds-react-aria-:R2elalalakcq:-loadingMessage" class="css-1whdyhf">
</div>
<div class="cds-167 cds-152 cds-input-root cds-input-onLight cds-Search-inputRoot css-7uw4jt cds-177 cds-171 cds-156 cds-input-adornedStart cds-172 cds-157 cds-input-adornedEnd">
<div class="cds-185 cds-inputAdornment-root cds-inputAdornment-standard cds-inputAdornment-start cds-Search-prefix css-ew9pz cds-187" aria-hidden="true">
<svg aria-hidden="true" fill="none" focusable="false" height="20" viewBox="0 0 20 20" width="20" id="cds-react-aria-:R8qmelalalakcq:" class="css-1u8qly9">[... 606 characters folded ...]
</svg>
</div><input aria-describedby="react-aria-:R2lalalakcqH6: react-aria-:R2lalalakcqH7:" autoComplete="off" id="search-autocomplete-input" name="query" placeholder="What do you want to learn?" type="text" aria-label="Search catal [... 239 characters folded ...]>
<div class="cds-185 cds-inputAdornment-root cds-inputAdornment-standard cds-inputAdornment-start cds-Search-suffix css-ew9pz cds-187" aria-hidden="false">
<div class="cds-Search-clearPlaceholder">
</div>
<div class="cds-Search-actionButtons"><button class="cds-149 cds-iconButton-small cds-iconButton-primary cds-iconButton-small cds-iconButton-primary css-pneq06" tabindex="0" type="submit" aria-label="Search">
<svg aria-hidden="true" fill="none" focusable="false" height="20" viewBox="0 0 20 20" width="20" id="cds-react-aria-:Rqda9qmelalalakcq:" class="css-1u8qly9">[... 606 characters folded ...]
</svg></button>
</div>
</div><fieldset aria-hidden="true" style="padding-left:8px" class="cds-203 cds-161 cds-input-notchedOutline cds-Search-notchedOutline"><legend class="cds-204" style="width:0.01px"><span>​</span></legend></fieldset>
</div>
</div>
</div>
</form>
</div>
</div>
</div>
<div class="cds-9 css-1tlquih cds-10 cds-11 cds-grid-item cds-16 cds-18 cds-28"><button class="cds-149 cds-iconButton-medium cds-iconButton-ghost cds-iconButton-medium cds-iconButton-ghost css-9jkubm" tabindex="0" type="button" aria-label="Ask Coursera" data-testid="coursera-ai-sparkle">
<svg aria-hidden="true" fill="none" focusable="false" height="24" viewBox="0 0 20 20" width="24" id="cds-react-aria-:Rqdanalakcq:" class="css-1u8qly9">[... 1,543 characters folded ...]
</svg></button>
<div class="cds-9 css-0 cds-11 cds-grid-item cds-16"><a data-click-key="front_page.front_page_story.click.header_right_nav_button" data-click-value="{"href":"/#authMode=login","namespace":{"action":"click","app":& [... 540 characters folded ...]><span class="cds-button-label">Log In</span></a>
</div>
<div class="cds-9 css-0 cds-11 cds-grid-item cds-16"><a data-click-key="front_page.front_page_story.click.header_right_nav_button" data-click-value="{"href":"/#authMode=signup","namespace":{"action":"click","app": [... 549 characters folded ...]><span class="cds-button-label">Join for Free</span></a>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="css-18ec1m8">
<div class="cds-1 main-nav-container css-ys0mpv cds-2 cds-7">
<div class="cds-9 css-1kspkkz cds-10">
<div class="cds-9 css-rjm5sh cds-10 cds-11 cds-grid-item cds-56">
<div class="cds-9 css-0 cds-10 cds-16 cds-18 cds-29">
<div class="cds-9 css-16ejpbb cds-11 cds-grid-item">
<nav><button class="cds-149 mobile-menu-hamburger cds-iconButton-medium cds-iconButton-ghost cds-iconButton-medium cds-iconButton-ghost css-n0rf5u" tabindex="0" type="button" aria-label="Open Navigation Menu" data-e2e="mobile-nav-icon">
<svg aria-hidden="true" fill="none" focusable="false" height="24" viewBox="0 0 20 20" width="24" id="cds-react-aria-:R1kqiqdalekcq:" class="css-1u8qly9">[... 616 characters folded ...]
</svg></button>
</nav><a data-click-key="front_page.front_page_story.click.logo" data-click-value="{"href":"/","namespace":{"action":"click","app":"front_page","compon [... 353 characters folded ...]>
<div class="css-guxf6x">
<div>
<svg viewBox="0 0 1155 164" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Coursera" class="css-c2g0tf">[... 2,071 characters folded ...]
</svg>
</div>
</div></a>
</div>
<div class="cds-9 css-16ejpbb cds-11 cds-grid-item"><button class="cds-149 cds-iconButton-medium cds-iconButton-ghost cds-iconButton-medium cds-iconButton-ghost css-9jkubm" tabindex="0" type="button" aria-label="Ask Coursera" data-testid="coursera-ai-sparkle">
<svg aria-hidden="true" fill="none" focusable="false" height="24" viewBox="0 0 20 20" width="24" id="cds-react-aria-:R6j8qlalekcq:" class="css-1u8qly9">[... 1,547 characters folded ...]
</svg></button><button class="cds-149 cds-iconButton-medium cds-iconButton-ghost cds-iconButton-medium cds-iconButton-ghost css-e7a44p" tabindex="0" type="button" aria-label="Search">
<svg aria-hidden="true" fill="none" focusable="false" height="24" viewBox="0 0 20 20" width="24" id="cds-react-aria-:R39l5alalekcq:" class="css-1u8qly9">[... 606 characters folded ...]
</svg></button>
<div class="css-s0uxf7">
<div class="css-br72q2">
</div>
</div><button class="cds-149 cds-button-disableElevation cds-button-secondary css-tufaxx" tabindex="0" type="button"><span class="cds-button-label">Join for Free</span></button>
</div>
Shown with 218 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 780 KB.
Reading view the text a plain-fetch client can extract
title: Coursera | Online Courses, Certificates, & Degrees
Learn without limits
For Individuals For Businesses For Universities For Governments Explore Degrees Log In Join for Free Join for Free Learn without limits Unwrap a year of new skills for $239/year Build in-demand skills and the confidence to take on what’s next. Save now Unwrap new skills for your team and save 40% No lengthy rollout, no delays. Just big savings and skills your team can use right away. Save 40% on Teams AI is reshaping Data Analytics Learn the skills changing data analytics in a curated learning plan, powered by industry experts. Get started Previous Next Go to item 1 Go to item 2 Go to item 3 New and popular Most popular Hot new releases Trending AI courses Previous Next Learn from 350+ leading universities and companies Google IBM Microsoft University of Illinois OpenAI Anthropic DeepLearning.AI Stanford Online University of Pennsylvania University of Michigan Previous Next Introducing AI Series Introducing AI Series Build the AI skills your changing role demands. Find your AI Series Launch a new career Launch a new career Try Coursera for Business Try Coursera for Business Earn a degree Earn a degree Previous Next Explore categories Business Artificial Intelligence Data Science Computer Science Information Technology
1150 more words follow in the initial HTML.
| Check | Result | Detail |
|---|---|---|
| H1 in the initial HTML | Found one H1 | First H1: Learn without limits |
| First 200 words in the initial HTML | Found 200 of 200 words | The initial HTML carries 1350 words of visible text; the first 200 are marked in the left pane. |
| llms.txt present and linked | Note present, not linked | 6773 bytes, 45 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. 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 Answer, FAQPage, Organization, Question | 4 schema.org types in JSON-LD blocks on the home page: Answer, FAQPage, Organization, Question. |
| 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 coursera.org.
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