What RSS Feed Specifications, Extensions, and Validators Are Listed on ALL-about-RSS?

ALL-about-RSS (rss.tips) groups feed-format resources into four sections: Web Feed Specifications, Specification Converters, Specification Comparison Tool, and RSS Extensions, plus a separate RSS Feed Validator entry. If you are writing or debugging a feed, the validator is the practical starting point; the specification and extension sections are reference material for deciding which format and which extra elements your feed should use.

Web Feed Specifications

This section collects the standards documents that define how feeds are structured. ALL-about-RSS does not rank or annotate them individually — it lists them as the canonical references behind the formats that readers and aggregators consume. In practice you consult these when you need to confirm which elements are required, which are optional, and how a given feed type is expected to be declared.

Specification Converters

Converters sit between formats. If a tool or platform only accepts one feed type but your source publishes another, a converter is what you reach for. ALL-about-RSS lists these alongside the specifications rather than under tools, which signals their role: they exist to reconcile format differences, not to add features.

Specification Comparison Tool

A dedicated comparison tool is listed so you can check how the specifications differ from one another instead of reading each document end to end. Use it when you need to decide which format to publish, or when a reader behaves differently from what a spec seems to promise.

RSS Extensions

Extensions are additions layered on top of a base specification — the modules that carry extra metadata beyond the core feed structure. ALL-about-RSS keeps them in their own section because they are optional: a feed can be valid without them, but some readers and services look for them. Check this section when a platform asks for information your base feed does not carry.

RSS Feed Validator

The validator is listed as its own top-level item, separate from the specification sections. That placement matches its purpose: it is the check you run against a feed you have already produced, to confirm it conforms before you publish or debug it. The typical loop is — build or edit the feed, run it through the validator, fix whatever it flags, then re-check.

How to Use These Sections Together

A workable order for a new feed: pick the format from the specifications, add any extensions your target readers expect, convert if your source format differs, then validate before publishing. For an existing feed that misbehaves, start at the validator and work backward into the specification or extension section that covers the element being flagged.

One caveat: ALL-about-RSS describes itself as a curated list, not an "Awesome list" — it states that any service or tool that functions and is maintained well can appear, with no particular order. So the presence of an item tells you it was considered worth listing, not that it is recommended over the others in its section.