Fastly: vendor profile

In short

Fastly published a Compute walkthrough on 2026-05-28 that uses Defuddle, Turndown and linkedom to convert pages, and a cold conversion takes a few hundred milliseconds. There is no one-click conversion, and the pages read describe no rendering of client-side JavaScript apps. Compute includes 10 million requests a month free.

At a glance

standards.txt fastly

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

0 supports, 2 partial or announced, 4 no statement.

Fastly Host, CDN or edge product

Edge cloud and CDN with Fastly Compute, a WebAssembly runtime where a small service can answer Accept: text/markdown or known AI crawlers with a cached markdown copy of the origin page.

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

What it does for this layer

Fastly published "Give AI Agents the Markdown They Actually Want" on 2026-05-28, a walkthrough of a Fastly Compute service that serves agents a markdown version of the same page while normal requests pass to the origin. [primary source, 2026-05-28] source, read 5 November 2026.
The Fastly example converts a page to markdown when the user agent matches one of 17 AI crawler patterns or the request sends Accept: text/markdown. [primary source] source, read 5 November 2026.
The Fastly example also answers an explicit /md/<path> prefix with markdown regardless of headers, for debugging and spot checks. [primary source] source, read 5 November 2026.
Fastly's example uses Defuddle for content extraction and Turndown for markdown, with linkedom providing the DOM inside the Compute JavaScript runtime. [primary source] source, read 5 November 2026.
Fastly says a markdown conversion takes a few hundred milliseconds on a cold request and uses SimpleCache to cache the result at the edge. [primary source] source, read 5 November 2026.
Fastly says a typical article in markdown compresses to 20 to 30 percent of its HTML size. [vendor claim] source, read 5 November 2026.
Fastly pricing lists 10 million Compute requests a month free and usage-based tiers beyond that. [primary source, 2026-11-05] source, read 5 November 2026.
Fastly's pricing page lists an AI Runtime Control product for routing, governance and observability of AI and agentic traffic at the edge, with 100,000 requests a month free. [primary source] 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
Fastly Compute	WebAssembly edge runtime where request handlers can read headers such as Accept and transform origin responses.	Usage-based, with a free allowance 10 million Compute requests a month free	2026-11-05	source
Fastly CDN (Full Site Delivery)	Content delivery with caching and VCL or Compute configuration.	Usage-based, with a free allowance Free tier, Growth usage-based and Enterprise quote	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	partial	A Fastly blog example builds Accept: text/markdown handling on Compute; it is sample code, not a switch.	source
markdown-twin	partial	The same example serves /md/<path> as markdown.	source
initial-html	no statement	Fastly caches and serves the origin HTML; rendering is the origin's job.	none
real-404	no statement	Status codes pass through from the origin in the pages read.	none
vary-accept	no statement	The blog excerpt read does not state the Vary header it sends.	none

Checks on its own site

Readings of fastly.com, 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; 1,294 words; 2 JSON-LD blocks	2026-11-05
Request with Accept: text/markdown	HTTP 200, text/html, Vary: Accept-Encoding	2026-11-05
/llms.txt at the host root	HTTP 200, text/plain, 16 KB, starts with an H1	2026-11-05
A made-up path	HTTP 404	2026-11-05
Ora score, cached	70, grade B	2026-10-16
Cloudflare keyless scan	20, L1 Basic Web Presence	2026-11-05
Shared crawl row	Tranco rank 6,999; home page HTTP 200; H1 in the HTML: yes; 1,747 words; JSON-LD types: Organization, Corporation; answers markdown: no; made-up path HTTP 404; llms.txt valid: yes	2026-11-04

What it does not do

Fastly has no one-click markdown conversion; the May 2026 blog post is code a customer deploys on Compute.
Fastly does not render client-side JavaScript apps into HTML for agents in the pages read.

Related pages on this site

Sources

Fastly: home page https://www.fastly.com/, read 5 November 2026
Give AI Agents the Markdown They Actually Want | Fastly https://www.fastly.com/blog/give-ai-agents-markdown-they-actually-want, read 5 November 2026
Explore Fastly Pricing Tiers and Package Options | Fastly https://www.fastly.com/pricing, read 5 November 2026

Last reviewed 5 November 2026