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 lang="en-US" class="no-js">
<head>
<meta charset="utf-8">
<script>[... 893 characters folded ...]</script>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, minimum-scale=1, initial-scale=1, viewport-fit=cover">
<link rel="pingback" href="https://www.appsflyer.com/xmlrpc.php"/>
<!-- Body font (Inter, latin subset): discovered late via CSS otherwise -->
<link rel="preload" href="https://www.appsflyer.com/wp-content/themes/AF2020/assets/css/fonts/Inter-VariableFont_opsz,wght.woff2" as="font" type="font/woff2" crossorigin>
<!-- Preconnect only to origins needed on every page load (max ~4); the rest get a cheap DNS prefetch -->
<link rel="preconnect" href="https://www.googletagmanager.com">
<link rel="preconnect" href="https://cdn.cookielaw.org">
<link rel="dns-prefetch" href="https://go.appsflyer.com">
<link rel="dns-prefetch" href="https://fast.wistia.com">
<link rel="dns-prefetch" href="https://dev.visualwebsiteoptimizer.com">
<link rel="dns-prefetch" href="https://maps.googleapis.com">
<meta name='robots' content='index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1' />
<link rel="alternate" hreflang="en" href="https://www.appsflyer.com/" />
<link rel="alternate" hreflang="ja" href="https://www.appsflyer.com/ja/" />
<link rel="alternate" hreflang="ru" href="https://www.appsflyer.com/ru/" />
<link rel="alternate" hreflang="es" href="https://www.appsflyer.com/es/" />
<link rel="alternate" hreflang="ko" href="https://www.appsflyer.com/ko/" />
<link rel="alternate" hreflang="de" href="https://www.appsflyer.com/de/" />
<link rel="alternate" hreflang="pt" href="https://www.appsflyer.com/pt/" />
<link rel="alternate" hreflang="x-default" href="https://www.appsflyer.com/" />
<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https://yoast.com/product/yoast-seo-premium-wordpress/ -->
<title>AppsFlyer | Modern Marketing Cloud</title>
<meta name="description" content="Unify measurement, deep linking, data collaboration, and AI across mobile, web, CTV, console and beyond. Make smarter decisions, optimize every channel, and prove impact with the platform built for modern marketing." />
<link rel="canonical" href="https://www.appsflyer.com/" />
<meta property="og:locale" content="en_US" />
<meta property="og:type" content="website" />
<meta property="og:title" content="AppsFlyer | Modern Marketing Cloud" />
<meta property="og:description" content="Unify measurement, deep linking, data collaboration, and AI across mobile, web, CTV, console and beyond. Make smarter decisions, optimize every channel, and prove impact with the platform built for modern marketing." />
<meta property="og:url" content="https://www.appsflyer.com/" />
<meta property="og:site_name" content="AppsFlyer" />
<meta property="article:modified_time" content="2026-11-01T13:42:32+00:00" />
<meta property="og:image" content="https://www.appsflyer.com/wp-content/uploads/2026/10/OG.png" />
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="630" />
<meta property="og:image:type" content="image/png" />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:title" content="AppsFlyer | Modern Marketing Cloud" />
<script type="application/ld+json" class="yoast-schema-graph">[... 2,766 characters folded ...]</script>
<!-- / Yoast SEO Premium plugin. -->
<link rel='dns-prefetch' href='//go.appsflyer.com' />
<link rel='dns-prefetch' href='//fast.wistia.com' />
<style id="wp-img-auto-sizes-contain-inline-css">[... 135 characters folded ...]</style>
<style id="wp-emoji-styles-inline-css">[... 340 characters folded ...]</style>
<link rel='stylesheet' id='wp-block-library-css' href='https://www.appsflyer.com/wp-includes/css/dist/block-library/style.min.css?ver=7.1.4' media='all' />
<style id="classic-theme-styles-inline-css">[... 350 characters folded ...]</style>
<style id="appsflyer-custom-related-posts-block-style-inline-css">[... 3,187 characters folded ...]</style>
<style id="appsflyer-reports-feed-block-style-inline-css">[... 10,358 characters folded ...]</style>
<style id="appsflyer-section-video-cards-block-style-inline-css">[... 6,355 characters folded ...]</style>
<style id="global-styles-inline-css">[... 17,408 characters folded ...]</style>
<link rel='stylesheet' id='dashicons-css' href='https://www.appsflyer.com/wp-includes/css/dashicons.min.css?ver=7.1.4' media='print' onload="this.media='all'" />
<noscript>[... 134 characters folded ...]</noscript><link rel='stylesheet' id='af-marketo-forms-core-css' href='https://www.appsflyer.com/wp-content/plugins/af-marketo-forms-core/assets/css/frontend.css?ver=1.5.24' media='all' />
<link rel='stylesheet' id='af-style-css' href='https://www.appsflyer.com/wp-content/themes/AF2020/assets/css/main.min.css?ver=2.200' media='' />
<link rel='stylesheet' id='slick-css' href='https://www.appsflyer.com/wp-content/themes/AF2020/assets/css/vendors/slick.css?ver=2.200' media='all' />
<link rel='stylesheet' id='select2-style-css' href='https://www.appsflyer.com/wp-content/themes/AF2020/assets/css/vendors/select2.min.css?ver=2.200' media='all' />
<link rel='stylesheet' id='intl-phone-input-style-css' href='https://www.appsflyer.com/wp-content/themes/AF2020/assets/css/vendors/intlTelInput.min.css?ver=2.200' media='all' />
<link rel='stylesheet' id='hcb-style-css' href='https://www.appsflyer.com/wp-content/plugins/highlighting-code-block/build/css/hcb--light.css?ver=1108145535' media='all' />
<style id="hcb-style-inline-css">[... 196 characters folded ...]</style>
<link rel='stylesheet' id='af-marketo-form-request_demo-css' href='https://www.appsflyer.com/wp-content/plugins/af-marketo-forms-core/assets/css/forms/request-demo/style.css?ver=1791188776' media='all' />
<script id="wpml-cookie-js-extra">[... 168 characters folded ...]</script>
<script data-wp-strategy="defer" defer id="wpml-cookie-js" src="https://www.appsflyer.com/wp-content/plugins/sitepress-multilingual-cms/res/js/cookies/language-cookie.js?ver=520000"></script>
<script id="jquery-js" src="https://www.appsflyer.com/wp-content/themes/AF2020/assets/js/vendors/jquery.min.js?ver=1.311221"></script>
<link rel="EditURI" type="application/rsd+xml" title="RSD" href="https://www.appsflyer.com/xmlrpc.php?rsd" />
<meta name="generator" content="WordPress 7.1.4" />
<link rel='shortlink' href='https://www.appsflyer.com/' />
<meta name="generator" content="WPML ver:5.2.0 stt:59,1,3,28,29,65,45,2;" />
<!-- Schema optimized by Schema Pro --><script type="application/ld+json">[... 758 characters folded ...]</script><!-- / Schema optimized by Schema Pro --><meta name="author" content="AppsFlyer" /> <style id="wpsp-style-frontend"></style>
<link rel="icon" href="https://www.appsflyer.com/wp-content/uploads/2025/11/cropped-54649.-New-Website-favicon-32x32.png" sizes="32x32" />
<link rel="icon" href="https://www.appsflyer.com/wp-content/uploads/2025/11/cropped-54649.-New-Website-favicon-192x192.png" sizes="192x192" />
<link rel="apple-touch-icon" href="https://www.appsflyer.com/wp-content/uploads/2025/11/cropped-54649.-New-Website-favicon-180x180.png" />
<meta name="msapplication-TileImage" content="https://www.appsflyer.com/wp-content/uploads/2025/11/cropped-54649.-New-Website-favicon-270x270.png" />
<script>[... 340 characters folded ...]</script>
<!-- OneTrust Cookies Consent Notice start for appsflyer.com. -->
<script src="https://cdn.cookielaw.org/scripttemplates/otSDKStub.js" type="text/javascript" charset="UTF-8" data-domain-script="251ecfae-fb3e-4dfb-a871-db1e2a4a1e51" async></script>
<script type="text/javascript">[... 4,549 characters folded ...]</script>
<!-- OneTrust Cookies Consent Notice end for appsflyer.com -->
<!-- Google Tag Manager -->
<script>[... 415 characters folded ...]</script>
<!-- End Google Tag Manager -->
<!-- [... 1249 characters folded ...] -->
<noscript>[... 157 characters folded ...]</noscript>
<!-- End Google Tag Manager (noscript) -->
<nav id="main-nav" class="navbar--main navbar navbar-expand-md navbar-light sps sps--abv">
<div class="container-fluid px-0">
<div class="main-nav__inner-container" data-target="nav-holder main-nav">
<div class="holder-mobile-brand-back">
<a class="navbar-brand" href="https://www.appsflyer.com" data-af-track="Logo"></a>
<span class="back-btn">
<svg width="14" height="11" viewBox="0 0 14 11" fill="none" xmlns="http://www.w3.org/2000/svg">[... 712 characters folded ...]</svg>
Back </span>
</div>
<div class="mobile-wrapper" data-target="nav-holder main-nav">
<a itemprop="url"
class="btn btn-tertiary login-mobile"
href="https://hq1.appsflyer.com/auth/login"
id=""
data-aft="login"
[... 109 characters folded ...]>
<i class="icon-login-new">
<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">[... 989 characters folded ...]</svg>
</i>
<span class="login-text">
Login </span>
</a>
<button id="navbar-toggler" class="navbar-toggler hamburger" type="button" data-toggle="on"
aria-controls="main-nav" aria-expanded="false" aria-label="Toggle navigation">
<span></span>
<span></span>
</button>
</div>
<div id="nav-holder" class="nav-holder flex-column flex-md-row pt-70 pt-md-0 px-md-0 navbar-collapse">
<ul class="main-nav__holder navbar-nav list-style-none mr-md-auto"
itemscope itemtype="https://schema.org/SiteNavigationElement"
role="menu">
<li itemprop="name"
role="menuitem"
class="menu-item menu-item-type-custom menu-item-object-custom nav-item mega-parent">
Shown with 78 long blocks (scripts, styles, long tags) folded into a marker that says how many characters they hide; the pane stops after the first 200 words; the page is 430 KB.
Reading view the text a plain-fetch client can extract
title: AppsFlyer | Modern Marketing Cloud
The measurement foundation your AI actually needs
Back Login Products Products Measurement Suite Mobile Attribution Web Attribution CTV Attribution PC & Console Attribution Cross-Platform Measurement ROI Measurement Marketing Analytics Incrementality Creative Optimization Audience Segmentation Fraud Protection Product Analytics Deep Linking Suite Web-to-App QR-to-App Email-to-App Text-to-App Referral-to-App Social-to-App Deferred Deep Linking Link Management Data Collaboration Suite Data Management Audience Activation Retail Media Measurement Signal Hub Data Clean Room Agentic AI Suite Agent Hub MCP AI Assistant Featured Product tours Product news Enterprise-Grade Security Solutions Solutions By Industry Gaming Finance eCommerce Entertainment Food and drink Health and fitness Travel and local Subscription apps By Goal User acquisition and ROAS Customer retention and LTV Omnichannel media buying Creative strategy Media selling and monetization Partnerships Tech and media partners Agencies AWS Featured Product tours Enterprise solutions Customer stories Resources Resources Blog Marketing Attribution Cross-platform Measurement Deep Linking Data Collaboration AI Analytics Research & Reports State of Creative State of Gaming State of eCommerce State of Fraud App Marketing Benchmarks Performance Index Events & Media Events & webinars On-demand events MAMA events Sponsor MAMA Podcasts YouTube videos Customer Resources Product tours Customer learning portal Developer Hub Knowledgebase Product news AASA Validator Blog Get the latest marketing news and expert insights delivered to
779 more words follow in the initial HTML.
| Check | Result | Detail |
|---|---|---|
| H1 in the initial HTML | Found one H1 | First H1: The measurement foundation your AI actually needs |
| First 200 words in the initial HTML | Found 200 of 200 words | The initial HTML carries 979 words of visible text; the first 200 are marked in the left pane. |
| llms.txt present and linked | Note present, not linked | 22013 bytes, 86 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 BreadcrumbList, ContactPoint, EntryPoint, ImageObject and 9 more | 13 schema.org types in JSON-LD blocks on the home page: BreadcrumbList, ContactPoint, EntryPoint, ImageObject, ListItem, Organization, Person, PostalAddress, PropertyValueSpecification, ReadAction, SearchAction, WebPage, 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 appsflyer.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