Prerender.io: vendor profile

In short

Prerender.io judges a page ready by counting open network requests, unless the page sets window.prerenderReady itself. Only requests routed by user agent get the cached HTML. The API has a /recache endpoint to refresh a page after a content change. Starter costs $59 a month for 30,000 renders, and Growth costs $169.

At a glance

standards.txt prerender-io

llms-txt               = no statement
markdown-negotiation   = no statement
markdown-twin          = no statement
initial-html           = supports
real-404               = partial
vary-accept            = no statement

1 supports, 1 partial or announced, 4 no statement.

Prerender.io Host, CDN or edge product

Dynamic rendering service that renders JavaScript pages in a headless browser, caches the HTML and serves it to search crawlers and AI crawlers, with meta tags that set the status code the cached copy returns.

Type: Host, CDN or edge product
Home page: prerender.io, answered HTTP 200 on 2026-11-05
Last read: 5 November 2026

What it does for this layer

Prerender.io's docs say it serves cached HTML to AI crawlers and search engines, and that accuracy depends on status codes, page readiness signals, cache management and cookie consent handling. [primary source] source, read 5 November 2026.
By default Prerender.io caches a page and answers with 200 OK; a meta tag named prerender-status-code with the value 404 or 301 in the head overrides the status, and prerender-header can carry a Location for the 301. [primary source] source, read 5 November 2026.
Prerender.io caches exactly the status code the origin returns, so a missing page that the origin answers with 200 is cached and served to every crawler as a 200 soft 404. [primary source] source, read 5 November 2026.
Prerender.io guesses when a page is ready by counting in-flight network requests, and a page can set window.prerenderReady to false and then true to control when the snapshot is taken. [primary source] source, read 5 November 2026.
The Prerender.io API has a /recache endpoint so a site can refresh a cached page when its content changes instead of waiting for expiry. [primary source] source, read 5 November 2026.
Prerender.io lists Starter at $59 a month for 30,000 renders, Growth at $169 a month for 100,000 renders and Pro at $419 a month for 500,000 renders, with custom Enterprise Plus pricing. [primary source, 2026-11-05] source, read 5 November 2026.
Prerender.io says on its pricing page that it has supported businesses with search visibility since 2014. [vendor claim] source, read 5 November 2026.
Prerender.io says 30 percent of bot traffic now comes from AI crawlers and that only 25 percent of AI crawlers can fetch JavaScript without executing it. [vendor claim] source, read 5 November 2026.

Products and plans

Plans and prices as the vendor's own pages showed them on the date read.
Product	What it is	Price	As of	Source
Prerender.io	Headless-browser rendering and HTML cache served to crawlers through a middleware or CDN integration.	From USD 59 Starter, 30,000 renders a month, 30-day free trial	2026-11-05	source

Standards

The six standards this site tracks; no statement means the pages read said nothing.
Standard	Status	What the vendor's pages say	Source
llms-txt	no statement	No llms.txt feature in the pages read.	none
markdown-negotiation	no statement	Prerender.io returns rendered HTML, not markdown, in the pages read.	none
markdown-twin	no statement	No markdown output in the pages read.	none
initial-html	supports	Crawlers and agents get cached, fully rendered HTML of JavaScript pages.	source
real-404	partial	The cached status is whatever the origin returns, or the value of a prerender-status-code meta tag.	source
vary-accept	no statement	Not covered in the pages read.	none

Checks on its own site

Readings of prerender.io, the vendor's own website, which describe that site and not the product.
Reading	Result	Date
Home page request	HTTP 200; H1 in the initial HTML: yes; 1,394 words; 3 JSON-LD blocks	2026-11-05
Request with Accept: text/markdown	HTTP 200, text/html, Vary: Accept-Encoding, Accept-Encoding,Cookie	2026-11-05
/llms.txt at the host root	HTTP 200, text/plain, 7.1 KB, starts with an H1	2026-11-05
A made-up path	HTTP 404	2026-11-05
Ora score, cached	Not available: GET /api/score returned 404 DOMAIN_NOT_SCANNED	2026-11-05
Cloudflare keyless scan	33, L1 Basic Web Presence	2026-11-05

What it does not do

Prerender.io does not change what human visitors receive; only requests routed to it by user agent get the cached HTML.

Related pages on this site

Sources

Prerender.io: home page https://prerender.io/, read 5 November 2026
Best practices for crawler-ready pages https://docs.prerender.io/docs/best-practices-for-crawler-ready-pages, read 5 November 2026
Why is Prerender.io caching my 404 pages as 200? https://docs.prerender.io/docs/404-page-is-cached-as-200, read 5 November 2026
Prerender Pricing Plans: Find a Plan to Fuel Your Visibility https://prerender.io/pricing/, read 5 November 2026
AI Search SEO with Prerender to Boost AI Visibility https://prerender.io/ai-search/, read 5 November 2026

Last reviewed 5 November 2026