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.

GET https://dev.wix.com/ answered 200 with text/html, 81 KB, read 9 November 2026, 14:09 UTC.

Permalink: /viewer/?url=https://dev.wix.com/

A plain-fetch client does not get the heading: 2 of 6 checks found.

Initial HTML what a plain fetch receives

<!DOCTYPE html>
<html lang="en">
<head>
<meta charSet="utf-8"/>
<meta name="viewport" content="width=device-width"/>
<link rel="canonical" href="https://dev.wix.com/docs"/>
<title>Wix Developer Documentation, APIs &amp; Guidelines | Wix Docs
</title>
<meta name="description" content="Browse comprehensive Wix developer documentation, API references, and general best practices to build custom websites, apps, and headless experiences."/>
<link rel="canonical" href="https://dev.wix.com/docs"/>
[... 29 more head elements folded ...]
</head>
<body class="overflow-hidden font-sans">
<div id="__next"><span class="wds_1_49_0_typography__root wds_1_49_0_newColorsBranding__root wds_1_49_0_madefor__madefor">
<div data-hook="docs-app-root">
<header class="fixed top-0 z-50 w-full">
<nav aria-label="main">
<div class="flex h-[var(--nav-bar-height)] w-full justify-between bg-white px-4 shadow-md md:pl-[30px] md:pr-6">
<div class="flex items-center gap-5"><a href="https://dev.wix.com" data-hook="logo">
<div class="flex">
<svg xmlns="http://www.w3.org/2000/svg" width="47" height="18" viewBox="0 0 47 18" fill="none">[... 1,304 characters folded ...]
</svg>
</div></a>
<div class="flex gap-[22px]">
<div class="mt-[1px] flex h-[var(--nav-bar-height)] items-center border-b-[1px] px-1 border-b-[transparent]"><a href="https://dev.wix.com/docs/overview" data-hook="navbar-overview-tab" class="text-sm hover:text-blue-800">Overview</a>
</div>
<div>
<div data-hook="navbar-select-develop-websites" data-content-hook="popover-content-navbar-select-develop-websites-0" class="wds_1_49_0_Popover__root wds_1_49_0_DropdownBase__root wds_1_49_0_DropdownBase--withWidth wds_1_ [... 121 characters folded ...]>
<div class="wds_1_49_0_Popover__element" data-hook="popover-element">
<div aria-haspopup="menu" aria-expanded="false">
<div class="wds_1_49_0_Box__root wds_1_49_0_Box---direction-10-horizontal wds_1_49_0_Box---justifyContent-6-middle ItemSelect_textButtonContainer__OYZSI" style="padding-left:4px;margin-top:1px;width:fit-content;height:var(--nav-bar-height);border-bottom:1px solid transparent;--wds_1_49_0_Box-gap:0"><button data-size="small" data-skin="standard" data-underline="none" data-weight="thin" class="wds_1_49_0_ButtonCore__root wds_1_49_0_Focusable__root wds_1_49_0_TextButton__root wds_1_49_0_TextButton---skin-8-standard wd [... 232 characters folded ...]><span class="wds_1_49_0_ButtonCore__content">Extend Websites</span>
<svg viewBox="0 0 24 24" fill="currentColor" width="24" height="24" class="wds_1_49_0_ButtonCore__suffix" data-hook="suffix-icon">[... 400 characters folded ...]
</svg></button>
</div>
</div>
</div>
</div>
</div>
<div>
<div data-hook="navbar-select-build-apps" data-content-hook="popover-content-navbar-select-build-apps-0" class="wds_1_49_0_Popover__root wds_1_49_0_DropdownBase__root wds_1_49_0_DropdownBase--withWidth wds_1_49_0_PopoverMenu__root ItemSelect_popover__u4T8c" data-zindex="1000" data-list-type="action">
<div class="wds_1_49_0_Popover__element" data-hook="popover-element">
<div aria-haspopup="menu" aria-expanded="false">
<div class="wds_1_49_0_Box__root wds_1_49_0_Box---direction-10-horizontal wds_1_49_0_Box---justifyContent-6-middle ItemSelect_textButtonContainer__OYZSI" style="padding-left:4px;margin-top:1px;width:fit-content;height:var(--nav-bar-height);border-bottom:1px solid transparent;--wds_1_49_0_Box-gap:0"><button data-size="small" data-skin="standard" data-underline="none" data-weight="thin" class="wds_1_49_0_ButtonCore__root wds_1_49_0_Focusable__root wds_1_49_0_TextButton__root wds_1_49_0_TextButton---skin-8-standard wd [... 232 characters folded ...]><span class="wds_1_49_0_ButtonCore__content">Build Apps</span>
<svg viewBox="0 0 24 24" fill="currentColor" width="24" height="24" class="wds_1_49_0_ButtonCore__suffix" data-hook="suffix-icon">[... 400 characters folded ...]
</svg></button>
</div>
</div>
</div>
</div>
</div>
<div class="mt-[1px] flex h-[var(--nav-bar-height)] items-center border-b-[1px] px-1 border-b-[transparent]"><a href="https://dev.wix.com/docs/go-headless" data-hook="Go Headless" class="text-sm hover:text-blue-800">Go Headless</a>
</div><hr class="w-[1px] flex-none border-none bg-slate-300 mx-0.5 my-4"/>
<div>
<div data-hook="navbar-select-apis-sdks" data-content-hook="popover-content-navbar-select-apis-sdks-0" class="wds_1_49_0_Popover__root wds_1_49_0_DropdownBase__root wds_1_49_0_DropdownBase--withWidth wds_1_49_0_PopoverMenu__root ItemSelect_popover__u4T8c" data-zindex="1000" data-list-type="action">
<div class="wds_1_49_0_Popover__element" data-hook="popover-element">
<div aria-haspopup="menu" aria-expanded="false">
<div class="wds_1_49_0_Box__root wds_1_49_0_Box---direction-10-horizontal wds_1_49_0_Box---justifyContent-6-middle ItemSelect_textButtonContainer__OYZSI" style="padding-left:4px;margin-top:1px;width:fit-content;height:var(--nav-bar-height);border-bottom:1px solid transparent;--wds_1_49_0_Box-gap:0"><button data-size="small" data-skin="standard" data-underline="none" data-weight="thin" class="wds_1_49_0_ButtonCore__root wds_1_49_0_Focusable__root wds_1_49_0_TextButton__root wds_1_49_0_TextButton---skin-8-standard wd [... 232 characters folded ...]><span class="wds_1_49_0_ButtonCore__content">References</span>
<svg viewBox="0 0 24 24" fill="currentColor" width="24" height="24" class="wds_1_49_0_ButtonCore__suffix" data-hook="suffix-icon">[... 400 characters folded ...]
</svg></button>
</div>
</div>
</div>
</div>
</div>
<div class="mt-[1px] flex h-[var(--nav-bar-height)] items-center border-b-[1px] px-1 border-b-[transparent]"><a href="/changelog" data-hook="navbar-changelog-tab" class="text-sm hover:text-blue-800">Changelog</a>
</div>
</div>
</div>
<div class="flex items-center">
<div class="w-3">
</div><span data-hook="search-input-nav-bar" class="flex size-[30px] cursor-pointer items-center justify-center rounded-full border border-blue-100 bg-blue-100 text-blue-700 hover:border-blue-500 hover:bg-blue-200" data-state="closed">
<svg viewBox="0 0 24 24" fill="currentColor" width="24" height="24" class="size-[18px]">[... 584 characters folded ...]
</svg></span>
<div>
</div>
<div class="hidden md:flex"><hr class="w-[1px] flex-none border-none bg-slate-300 mx-[18px] my-2"/>
<div class="flex h-full animate-pulse items-center gap-4 md:w-[60px]">
<div class="block md:hidden">
<div class="size-9 flex-none rounded-full bg-slate-300">
</div>
</div>
<div class="flex flex-grow flex-col gap-2">
<div class="h-[10px] rounded bg-slate-300">
</div>
<div class="h-[10px] rounded bg-slate-300">
</div>
</div>
</div>
</div>
</div>
</div>
</nav>
</header>
<div class="fixed top-[var(--nav-bar-height)] flex h-[var(--mobile-content-area-height)] w-full md:h-[var(--content-area-height)]">
<div class="h-full flex-grow @container/content-area">
<div class="Homepage_homepageWrapper__46hQa" data-hook="main-homepage">
<div class="Homepage_homepage__nB2XW">
<div class="mb-[5%] flex items-center gap-[8%] px-[3%] py-0">
<div class="w-[50%] text-[5.2vw]">Wix Developers
</div>
<div class="w-[50%]">
<div class="text-base lg:text-sm xl:text-base 2xl:text-lg">Customize your website&#x27;s functionality, build apps for Wix websites, and create headless sites &amp; apps. Explore our developer ecosystem to discover and harness the power of our full suite of business solutions, developer tools, and APIs, enabling you to rapidly build, deploy, and monetize your projects.
</div>
</div>
</div>
<div class="mb-[5%] flex gap-6">
<div class="flex aspect-square w-full flex-col justify-between rounded-[30px] transition-all duration-300 ease-out hover:-translate-y-4 hover:scale-95 bg-[linear-gradient(198deg,#CFE5FF_3.4%,#8DBDF5_101.2%)] p-[3vw]">
<div class="h-[50%] divide-y divide-[#000]">
<div class="line-clamp-2 h-[55%] pb-[1vw] text-[1.9vw]">Develop Custom Websites
</div>
<div class="line-clamp-4 pt-[1vw] text-sm 2xl:text-[1vw] 2xl:leading-[1.5vw]">Use Wix&#x27;s full-stack development platform to customize your site with code.
</div>
</div>
<div class="flex place-items-center gap-[1.5vw] "><a id="primary-button-Extend-Websites with Velo" data-skin="dark" data-priority="secondary" data-size="large" class="wds_1_49_0_ButtonCore__root wds_1_49_0_Focusable__root wds_1_49_0_Button__root wds_1_49_0_Button---skin [... 332 characters folded ...]><span class="wds_1_49_0_ButtonCore__content">Learn how</span></a><a id="secondary-button-Extend-Websites with Velo" data-size="tiny" data-skin="dark" data-underline="none" data-weight="thin" class="wds_1_49_0_ButtonCore__root wds_1_49_0_Focusable__root wds_1_49_0_TextButton__root wds_ [... 533 characters folded ...]><span class="wds_1_49_0_ButtonCore__content">Develop a site</span></a>
</div>
</div>
<div class="flex aspect-square w-full flex-col justify-between rounded-[30px] transition-all duration-300 ease-out hover:-translate-y-4 hover:scale-95 bg-[linear-gradient(197deg,#39DBB0_-0.35%,#24C69A_64.57%)] p-[3vw]">
<div class="h-[50%] divide-y divide-[#000]">
<div class="line-clamp-2 h-[55%] pb-[1vw] text-[1.9vw]">Build Wix Apps
</div>
<div class="line-clamp-4 pt-[1vw] text-sm 2xl:text-[1vw] 2xl:leading-[1.5vw]">Develop an app for Wix&#x27;s App Market, enabling users to extend their site’s functionality.
</div>
</div>
<div class="flex place-items-center gap-[1.5vw] "><a id="primary-button-Build-Apps" data-skin="dark" data-priority="secondary" data-size="large" class="wds_1_49_0_ButtonCore__root wds_1_49_0_Focusable__root wds_1_49_0_Button__root wds_1_49_0_Button---skin-4-dark wds_1_4 [... 311 characters folded ...]><span class="wds_1_49_0_ButtonCore__content">Learn how</span></a><a id="secondary-button-Build-Apps" data-size="tiny" data-skin="dark" data-underline="none" data-weight="thin" class="wds_1_49_0_ButtonCore__root wds_1_49_0_Focusable__root wds_1_49_0_TextButton__root wds_1_49_0_TextButt [... 600 characters folded ...]><span class="wds_1_49_0_ButtonCore__content">Build an app</span></a>
</div>
</div>
<div class="flex aspect-square w-full flex-col justify-between rounded-[30px] transition-all duration-300 ease-out hover:-translate-y-4 hover:scale-95 bg-[linear-gradient(200deg,#C19BF8_1.6%,#AB72FC_54.11%)] p-[3vw]">
<div class="h-[50%] divide-y divide-[#000]">
<div class="line-clamp-2 h-[55%] pb-[1vw] text-[1.9vw]">Create Custom Headless Experiences
</div>
<div class="line-clamp-4 pt-[1vw] text-sm 2xl:text-[1vw] 2xl:leading-[1.5vw]">Integrate Wix&#x27;s powerful business solutions with your own frontend using any tech stack.
</div>
</div>
<div class="flex place-items-center gap-[1.5vw] "><a id="primary-button-Go-Headless" data-skin="dark" data-priority="secondary" data-size="large" class="wds_1_49_0_ButtonCore__root wds_1_49_0_Focusable__root wds_1_49_0_Button__root wds_1_49_0_Button---skin-4-dark wds_1_ [... 313 characters folded ...]><span class="wds_1_49_0_ButtonCore__content">Learn how</span></a><a id="secondary-button-Go-Headless" data-size="tiny" data-skin="dark" data-underline="none" data-weight="thin" class="wds_1_49_0_ButtonCore__root wds_1_49_0_Focusable__root wds_1_49_0_TextButton__root wds_1_49_0_TextBut [... 390 characters folded ...]><span class="wds_1_49_0_ButtonCore__content">Create a project</span></a>
</div>
</div>
</div>
<div class="wds_1_49_0_Box__root wds_1_49_0_Box---direction-10-horizontal" style="margin-bottom:6%;--wds_1_49_0_Box-gap:0"><span data-mask="false" class="wds_1_49_0_Text__root wds_1_49_0_Text---size-6-medium wds_1_49_0_Text---skin-8-standard wds_1_49_0_Text---weight-4-thin wds_1_49_0_Text---list-style-9-checkmark HomepageCustomText_text__ZCD [... 195 characters folded ...]>Leverage your Wix dev skills</span>
</div>
<div class="wds_1_49_0_Box__root wds_1_49_0_Box---direction-8-vertical" style="margin-bottom:5%;width:100%;--wds_1_49_0_Box-gap:30px">

Shown with 42 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 81 KB.

Reading view the text a plain-fetch client can extract

title: Wix Developer Documentation, APIs & Guidelines | Wix Docs

No H1 in the initial HTML

Overview Extend Websites Build Apps Go Headless References Changelog Wix Developers Customize your website's functionality, build apps for Wix websites, and create headless sites & apps. Explore our developer ecosystem to discover and harness the power of our full suite of business solutions, developer tools, and APIs, enabling you to rapidly build, deploy, and monetize your projects. Develop Custom Websites Use Wix's full-stack development platform to customize your site with code. Learn how Develop a site Build Wix Apps Develop an app for Wix's App Market, enabling users to extend their site’s functionality. Learn how Build an app Create Custom Headless Experiences Integrate Wix's powerful business solutions with your own frontend using any tech stack. Learn how Create a project Leverage your Wix dev skills Get Paid for Building Advanced WebsitesAs a partner, you can turn your profession into profit by selling sites and offering services to customers with leads generated by us. Become a Partner Earn Revenue by Letting Others Use Your AppsLearn how to publish, promote, and monetize your apps in the App Market and take your business to new heights. Publish an App Join the Wix Dev Community Dev Discord Your dedicated space for sharing insights, receiving

41 more words follow in the initial HTML.

2 found, 4 missing, 1 note, from 7 checks run

H1Missing
200 wordsFound
llms.txtMissing
MarkdownMissing
Missing pathFound
JSON-LDMissing
OpenAPINote

What a plain fetch found on dev.wix.com
Check	Result	Detail
H1 in the initial HTML	Missing no H1	A plain-fetch client finds no page heading in the bytes it receives.
First 200 words in the initial HTML	Found 200 of 200 words	The initial HTML carries 241 words of visible text; the first 200 are marked in the left pane.
llms.txt present and linked	Missing absent (404)	/llms.txt returned 404. Absence is not a failure on its own: Ora's lab found it changed nothing for answers already in the HTML.
Markdown on request	Missing 404 text/html	Accept: text/markdown returned 404 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	Missing none	No JSON-LD block on the home page. Ora's lab found it made no difference when the answer was already in the HTML; Google says it is not needed for AI features.
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 dev.wix.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