What Is an RSS Feed and How Does It Work?

An RSS feed is an XML document at a web address that lists a website’s recent updates. An RSS reader retrieves the feeds you follow and collects their items in one place, so you can check multiple sites without visiting each one. A feed item may include a headline, summary, link, publication date, identifier, or media enclosure; feeds do not all contain the full article.

To subscribe, find a site’s RSS or XML feed link, copy its address, and add that URL to an RSS reader. The reader checks the feed periodically and shows new entries. [Library of Congress: RSS feeds and email subscriptions; RSS 2.0 specification]

How does an RSS feed work?

A publisher creates a feed. The site makes an XML document available at a URL. In RSS 2.0, the feed is a channel containing one or more item entries.
A reader retrieves it. You add the feed URL to a reader, which requests the document and parses its entries.
The reader shows updates. It presents information such as each item’s title, description, link, and date. Following the link may open the full article on the publisher’s site.
The reader checks again. Readers may fetch feeds periodically. RSS has an optional ttl value, expressed in minutes, that can provide a caching or refresh hint. Reader behavior and refresh timing can vary.

RSS is a web content syndication format commonly represented as XML. The publisher provides the feed; the reader gathers and presents updates from the sources you choose. [RSS 2.0 specification; National Park Service RSS help]

What is inside an RSS feed?

A typical RSS 2.0 document has a channel describing the feed as a whole and items describing individual updates. Here is a small example:

<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
  <channel>
    <title>Example Engineering Blog</title>
    <link>https://example.com/blog/</link>
    <description>Engineering articles and updates</description>
    <item>
      <title>A new article</title>
      <link>https://example.com/blog/new-article</link>
      <description>A short summary of the article.</description>
      <guid>https://example.com/blog/new-article</guid>
      <pubDate>Tue, 06 Oct 2026 09:00:00 GMT</pubDate>
    </item>
  </channel>
</rss>

The example uses ordinary RSS fields; a real feed can contain other fields and extensions. In RSS 2.0, an item must have at least a title or a description. Common item fields include:

title: the update’s headline or name.
link: a URL associated with the update, often its full webpage.
description: a summary or, in some feeds, fuller content.
pubDate: a publication date.
guid: an identifier for the item. Readers can use it to recognize an item across feed checks.
enclosure: optional media information, commonly used to point podcast feeds to audio files.

Field availability and reader support vary. Do not assume every feed includes a full article, or that every reader handles every optional feature or URI scheme identically. RSS 2.0 permits extensions when they are defined in namespaces. [RSS 2.0 specification]

Choose a reader. Readers are available as web services, mobile apps, and browser-integrated software. Consider which devices you use, whether you want browser or installed access, and which organization or saving features matter to you.
Find the feed. Look on the site for an RSS or XML link or feed icon. If the link opens an XML document, copy its URL from the address bar.
Add the URL in your reader. Use the reader’s add-feed or subscribe control and paste the address. The exact control depends on the reader.
Check the result. Confirm that the source appears and that its entries load. If discovery fails, look for a feed link on the site or contact the publisher; not every site exposes a feed prominently.

The Library of Congress describes readers as tools that monitor multiple sites and gather updates in one place. Examples named in published guides include Feedly, Inoreader, NewsBlur, Netvibes, and Flipboard; this is an example list, not a current feature or price comparison. [Library of Congress; Le Monde RSS feeds]

Read and inspect a feed with code

Developers can fetch a feed URL and parse the XML. The following examples request a public feed and print item titles and links. Replace the example URL with a feed you are allowed to access. These snippets demonstrate basic RSS parsing; production code should also handle malformed XML, HTTP errors, timeouts, and feed-specific variations.

cURL: retrieve the XML

curl --fail --location --max-time 30 \
  "https://example.com/feed.xml" \
  --output feed.xml

This saves the response; it does not parse the XML. Check the response content and status if the URL returns a webpage, redirect, or error instead of a feed.

Python: fetch and parse items

# Install once: python -m pip install requests
import requests
import xml.etree.ElementTree as ET

feed_url = "https://example.com/feed.xml"
response = requests.get(feed_url, timeout=20)
response.raise_for_status()
root = ET.fromstring(response.content)

channel = root.find("channel")
if channel is None:
    raise ValueError("This example expects an RSS 2.0 channel")

for item in channel.findall("item"):
    title = item.findtext("title") or item.findtext("description") or "(untitled)"
    link = item.findtext("link") or ""
    print(f"{title}\n{link}\n")

The standard library XML parser is enough for this simple example. Some feeds use namespaces or formats other than RSS 2.0, which require additional parsing logic.

Node.js: fetch and inspect XML

// Install once: npm install fast-xml-parser
import { XMLParser } from "fast-xml-parser";

const feedUrl = "https://example.com/feed.xml";
const response = await fetch(feedUrl, { signal: AbortSignal.timeout(20_000) });
if (!response.ok) {
  throw new Error(`Feed request failed: HTTP ${response.status}`);
}

const xml = await response.text();
const parser = new XMLParser({
  ignoreAttributes: false,
  attributeNamePrefix: "@_",
});
const feed = parser.parse(xml);
const rawItems = feed.rss?.channel?.item ?? [];
const items = Array.isArray(rawItems) ? rawItems : [rawItems];

for (const item of items) {
  console.log(item.title ?? item.description ?? "(untitled)");
  console.log(item.link ?? "");
  console.log();
}

This example uses Node’s built-in fetch and an XML parser package. XML parsers can represent repeated elements differently when there is only one item, so the code normalizes a single item into an array.

RSS feeds and podcasts

Podcast feeds use RSS items to describe episodes and can use an enclosure to point to each media file. Podcast platforms may impose requirements beyond the general RSS format. For example, Apple requires an RSS 2.0 feed submitted to Apple Podcasts to be publicly accessible and to contain at least one episode and artwork. Each episode must have a unique enclosure with a URL, length, and type, and a GUID that never changes. Those are Apple submission requirements, not universal requirements for every RSS feed. [Apple Podcasts for Creators: Podcast RSS feed requirements]

RSS compared with email subscriptions

RSS updates appear in a reader; email subscriptions deliver messages to an inbox. The Library of Congress notes that a publisher may offer the same information through either method, while some updates may be available through only one. Choose email if you prefer updates in your inbox, or a reader if you want to collect feeds separately from email. [Library of Congress]

What RSS readers do with screenshots

RSS readers focus on feed entries and links. If your development task also involves capturing a linked webpage, you can use a browser automation library to open the page and take a screenshot; that is a separate step from reading the feed XML. Browser-based capture is useful when you need to interact with the page, inspect rendering, or control the browser environment.

Or skip the browser setup

For a screenshot of a webpage linked from a feed, ScreenshotNeo provides a website screenshot API and MCP server. One GET request returns an image or PDF. See the ScreenshotNeo API documentation.

curl -G "https://api.screenshotneo.com/v1/shot" \
  -d access_key=YOUR_API_KEY \
  --data-urlencode url=https://example.com \
  -o shot.webp

import requests

r = requests.get(
    "https://api.screenshotneo.com/v1/shot",
    params={"access_key": "YOUR_API_KEY", "url": "https://example.com"},
    timeout=90,
)
r.raise_for_status()
open("shot.webp", "wb").write(r.content)

const q = new URLSearchParams({
  access_key: "YOUR_API_KEY",
  url: "https://example.com",
});
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);
if (!res.ok) throw new Error(`Screenshot request failed: HTTP ${res.status}`);
const bytes = new Uint8Array(await res.arrayBuffer());
await import("node:fs/promises").then(({ writeFile }) => writeFile("shot.webp", bytes));

ScreenshotNeo removes cookie banners, newsletter popups, and chat widgets before capture; each cleanup step can be turned off. Bot checks, blank pages, and failed loads are not billed, and response headers report the page verdict and billing status. Its MCP server lets AI agents use screenshot and page-information tools. The free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000 screenshots. Learn about ScreenshotNeo, or sign up for 1,000 free screenshots a month, with no card.

Reliability, refresh, and cost considerations

Refresh load: A reader needs to request feeds periodically to discover updates. Publishers can provide the optional RSS ttl hint, but clients decide how and when to refresh. Avoid designing a client that makes unnecessary rapid requests.
Feed changes: Items may be added, removed, or corrected. A reader benefits from a stable item identifier such as a persistent GUID, but feed quality and reader behavior vary.
Network and parsing failures: A feed can be unavailable, return an unexpected response, or contain XML your parser does not accept. Apply request timeouts, inspect HTTP status and content, and report parsing errors clearly.
Reader costs: Reader capabilities and pricing vary. Check the current reader’s terms and features directly rather than relying on an old list or undated count of applications.
Feed content: A short description may be all a feed provides. Follow the item link when you need the full article, and do not assume that enclosure handling or extension support is uniform across readers.

Troubleshooting RSS feeds

Problem	Likely cause	What to try
The reader cannot find a feed	The site does not expose an obvious feed link, or the reader’s discovery method does not recognize it.	Look for an RSS/XML link or feed icon on the site, open it, and add the URL directly.
The feed URL opens an error page	The address may be wrong, the server may be unavailable, or access may be restricted.	Recheck the copied URL, try again later, and inspect the HTTP status and response body.
The XML parser reports an error	The response may not be XML, may be malformed, or may use a feed format or namespace the simple parser does not handle.	Check the response content type and body, then use a parser and parsing logic suited to the feed’s actual structure.
The feed loads but an entry has no title	An RSS item can provide a description without a title.	Display the description as a fallback where available; RSS 2.0 requires at least one of title or description.
Updates appear late	The reader checks on its own schedule; refresh timing can differ by client.	Use the reader’s refresh control if available. A publisher’s optional `ttl` is a hint, not a guarantee that every reader refreshes at that interval.
A podcast episode will not play	The enclosure may be missing or invalid, or the podcast platform may require additional metadata.	Check the enclosure URL, length, and type, plus the destination platform’s feed requirements.

Frequently asked questions

Does RSS stand for “Really Simple Syndication”?

The National Park Service expands RSS as “Really Simple Syndication” in its help material. [National Park Service RSS help]

Do I need an account to use RSS?

You need a reader to subscribe conveniently, but the feed itself is a URL published by a site. Account requirements depend on the reader you choose.

Does every website have an RSS feed?

No. A site may not publish one or may not make it easy to discover. Look for a feed link or ask the publisher.

Does an RSS feed contain the complete article?

Sometimes, but not always. A feed may include a headline and summary with a link to the full article.

Can a podcast use RSS?

Yes. Podcast feeds use RSS items to describe episodes and can include media enclosures. A platform such as Apple Podcasts can add its own submission requirements.