Swift 6 package · v10.10.1 · MIT

Every feed format.
One Swift type.

FeedKit reads and writes RSS, RDF, Atom, and JSON into typed Swift models — thirteen namespaces, one universal Feed type.

Install FeedKit Read the docs

One package for Apple platforms, Linux, Wasm, and Android.

Feed.swift Read · any format

let feed = try await Feed(urlString: url)

switch feed {
case .rss(let feed):  // RSSFeed
case .rdf(let feed):  // RDFFeed
case .atom(let feed): // AtomFeed
case .json(let feed): // JSONFeed
}

Detected 4 formats · 13 namespaces

01 · Formats

Four specs. One API.

Dedicated models for RSS 2.0, RSS 1.0 (RDF), Atom, and JSON Feed — plus the namespaces real feeds actually use.

RSS 2.0

Spec ↗

Channels, items, enclosures
TTL, cloud, skip days
Categories and GUIDs

RDF

RSS 1.0 · 0.90 ↗

Items as channel siblings
Dublin Core metadata
RSS 0.90 compatibility

Atom

RFC 4287 ↗

Entries, authors, contributors
Content, source, and links
Atom 1.0 namespaces

JSON Feed

1.0 · 1.1 ↗

Items, authors, attachments
Hubs, next_url, expired
JSON Feed 1.0 and 1.1

namespaces, handled.

Dublin Core, Media RSS, iTunes, Podcast Index, and nine more.

Atom
Dublin Core
Syndication
Content
Media RSS
Geo RSS
GML
iTunes
YouTube
Podcast Index
Feed Paging · RFC 5005
Comment API
Podlove Chapters

02 · Performance

Measured, so regressions don't hide.

The chart is the record, not a highlight reel: measured releases since 10.5.0, same corpus, same baseline.

Apple M1 (8c) · Swift 6.4 · release build Benchmark log ↗

“The 10.5.1 date-decoding regression doubled parse time and went unnoticed for five releases; this table is the fix for that.”
PERFORMANCE.md · FeedKit

Corpus409 KB · 6 feeds

Items133 per run

Protocol50 sweeps · 5 warm-ups

03 · API

Read it. Generate it.
Detect it.

Dedicated types when you know the format. The universal Feed enum when you don't.

Five ways in

urlString · url · fileURL · string · data

Remote URLs use URLSession. On WASI, use fileURL, string, or data.

                Feed.swift
                Universal reader
              

                let feed = try await Feed(
  urlString: "https://daringfireball.net/feeds/main"
)

switch feed {
case .rss(let feed):  // RSSFeed
case .rdf(let feed):  // RDFFeed
case .atom(let feed): // AtomFeed
case .json(let feed): // JSONFeed
}
              

                let feed = RSSFeed(channel: .init(
  title: "Breaking News",
  link: "https://breakingnews.example/",
  description: "Updates as they happen.",
  items: [.init(
    title: "All hearts are joyful",
    link: "https://breakingnews.example/joy",
    description: "A story of unity."
  )]
))

let xml = try feed.toXMLString(formatted: true)
              

                let type = try FeedType(data: data)

switch type {
case .rss:  // application/rss+xml
case .rdf:  // RSS 1.0
case .atom: // application/atom+xml
case .json: // application/feed+json
}
              

Samples adapted from the FeedKit README.

04 · Source

Open source, in the open.

nmdias/FeedKit

1.4kGitHub stars

201Forks

1,078Commits

MITLicense

Public snapshot · 26 Oct 2026

05 · Install

Add it like any Swift package.

No third-party dependencies. Add the package URL in Xcode, or declare it in Package.swift.

Documentation ↗ GitHub ↗ MIT License ↗

Package URL

https://github.com/nmdias/FeedKit

Platforms iOS 15+ macOS 12+ watchOS 8+ tvOS 15+ visionOS 1+ Linux Wasm Android

Xcode → File → Add Package Dependencies…

Every feed format.One Swift type.