Workers AI Markdown Conversion: New endpoint to list supported formats

October 23, 2025

Developers can now programmatically retrieve a list of all file formats supported by the Markdown Conversion utility in Workers AI.

You can use the env.AI binding:

await env.AI.toMarkdown().supported()

Or call the REST API:

curl https://api.cloudflare.com/client/v4/accounts/{ACCOUNT_ID}/ai/tomarkdown/supported \
  -H 'Authorization: Bearer {API_TOKEN}'

Both return a list of file formats that users can convert into Markdown:

[
	{
		"extension": ".pdf",
		"mimeType": "application/pdf",
	},
	{
		"extension": ".jpeg",
		"mimeType": "image/jpeg",
	},
	...
]