☕ on the menu · Feeds

Feed tools, freshly brewed.

Fast, private, client-side tools for RSS, Atom, and OPML: validate a feed, convert a subscription list, or turn a feed into JSON. Everything runs in your browser: paste a feed and nothing is uploaded.

Feeds
RSS / Atom validator
Check any feed against the RSS 2.0 and Atom specs, see exactly what is malformed and where.
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Feeds
OPML converter
Import, view, and convert OPML subscription lists to and from JSON.
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Feeds
RSS → JSON
Turn any feed into clean JSON for your app, no server round-trip.
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Feeds
Feed preview
Paste a feed and read it as a clean, human-friendly list.
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A feed-native corner of the web

kbcafe.com has been a developer resource since the early RSS era, when feeds were how the web's writing actually moved around. That heritage is why the Feeds section exists: it is the most on-topic part of the site's history, and it is being rebuilt with modern, no-tracking tooling rather than left to rot.

The pieces of a feed

  • RSS 2.0: the classic <channel> / <item> format most blogs still publish.
  • Atom: the IETF-standard alternative (<feed> / <entry>), stricter and namespaced.
  • OPML: the outline format used to import and export whole lists of feed subscriptions between readers.

Why client-side

A feed often contains URLs, tokens in query strings, or content you would rather not hand to a third-party service. KB Cafe's feed tools parse everything locally in your browser, so a feed you paste here never leaves your machine, and the tools keep working offline once the page has loaded.

All four are live

The validator, OPML converter, RSS → JSON, and feed preview tools are all shipped and client-side. And KB Cafe now publishes its own feed, so you can follow new tools, courses, and posts in any reader, or read them on What’s New. The JSON → TypeScript converter pairs well with the RSS → JSON output.