lmorchard · March 11, 2025 12:01 · andypiper · Nov 21, 2024 · remyjimjim · Dec 12, 2024
diff --git a/substack-to-opml.js b/substack-to-opml.js
 // To use this script:
 //
 // 1. Copy this whole gist
 // 2. Log into your account on substack.com
 // 3. On a substack.com page, open the JavaScript console in your browser's web dev tools
 // 4. Paste this into the console and hit return.
 // 5. You should see substack-publications.opml has been downloaded.
 //
 // If you'd like to grab this code and improve it or turn it into a better tool, go right ahead!
 // Maybe drop me a toot at @[email protected] or @[email protected] if you liked it.

 fetch("https://substack.com/api/v1/subscriptions")
 	.then(res => res.json())
 	.then(subscriptionsData => {
 		const feeds = subscriptionsData.publications.map(item => ({
 			text: item.name,
 			type: "rss",
 			htmlUrl: item.base_url,
 			xmlUrl: item.base_url + "/feed"
 		}));
 		const nodes = feeds.map(feed => `
 			<outline type="rss"
 				text="${feed.text}"
 				htmlUrl="${feed.htmlUrl}" 
 				xmlUrl="${feed.xmlUrl}" />
 		`.trim());
 		const opml = `
 			<opml version='2.0'>
 				<body>
 					<outline text="Substack Publications" title="Substack Publications">
 						${nodes.join("\n")}
 					</outline>	
 				</body>
 			</opml>
 		`.trim();
 		
 		const data = new Blob([opml], {type: "application/xml"});
 		const url = window.URL.createObjectURL(data);
 		
 		const a = document.createElement("a");
 		a.textContent = "DOWNLOAD SUBSTACK OPML EXPORT";
 		a.href = url;
 		a.download = "substack-publications.opml";		
 		
 		document.body.insertBefore(a, document.body.firstChild);
 		a.click();
 	});
	// To use this script:
	//
	// 1. Copy this whole gist
	// 2. Log into your account on substack.com
	// 3. On a substack.com page, open the JavaScript console in your browser's web dev tools
	// 4. Paste this into the console and hit return.
	// 5. You should see substack-publications.opml has been downloaded.
	//
	// If you'd like to grab this code and improve it or turn it into a better tool, go right ahead!
	// Maybe drop me a toot at @[email protected] or @[email protected] if you liked it.

	fetch("https://substack.com/api/v1/subscriptions")
	.then(res => res.json())
	.then(subscriptionsData => {
	const feeds = subscriptionsData.publications.map(item => ({
	text: item.name,
	type: "rss",
	htmlUrl: item.base_url,
	xmlUrl: item.base_url + "/feed"
	}));
	const nodes = feeds.map(feed => `
	<outline type="rss"
	text="${feed.text}"
	htmlUrl="${feed.htmlUrl}"
	xmlUrl="${feed.xmlUrl}" />
	`.trim());
	const opml = `
	<opml version='2.0'>
	<body>
	<outline text="Substack Publications" title="Substack Publications">
	${nodes.join("\n")}
	</outline>
	</body>
	</opml>
	`.trim();

	const data = new Blob([opml], {type: "application/xml"});
	const url = window.URL.createObjectURL(data);

	const a = document.createElement("a");
	a.textContent = "DOWNLOAD SUBSTACK OPML EXPORT";
	a.href = url;
	a.download = "substack-publications.opml";

	document.body.insertBefore(a, document.body.firstChild);
	a.click();
	});