RSS Library for .NET - Compare RSS Versions


Overview

All RSS versions are listed below, with either a required, optional, or not supported flag. Also note that RSS 2.0 modules and most RSS (RDF) 1.0 specific elements are not included.

Documentation

RSS 2.0 spec
RSS 1.0 spec
RSS 0.92 spec
RSS 0.91 spec (UserLand)
RSS 0.90 spec (backup)

File Header

Legend
DOCTYPE
0.90 1.0 0.91 0.92 2.0 DOCTYPE
Not Supported Not Supported Required Not Supported Not Supported <!DOCTYPE rss PUBLIC "-//Netscape Communications//DTD RSS 0.91//EN" "http://my.netscape.com/publish/formats/rss-0.91.dtd">

RDF
0.90 1.0 0.91 0.92 2.0 RDF
Required Not Supported Not Supported Not Supported Not Supported <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://my.netscape.com/rdf/simple/0.9/">
Not Supported Required Not Supported Not Supported Not Supported <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://purl.org/rss/1.0/">

RSS
0.90 1.0 0.91 0.92 2.0 RSS
Not Supported Not Supported Required Required Required <rss version="{version number}">

XML
0.90 1.0 0.91 0.92 2.0 XML
Required Required Required Required Required <?xml version="1.0"?>
Not Supported Required Required Required Required <?xml version="1.0" encoding="{character set name}"?>

Channel elements

Legend
Category
0.90 1.0 0.91 0.92 2.0 Category
Not Supported Not Supported Not Supported Optional Optional <category>
Not Supported Not Supported Not Supported Optional Optional domain attribute
Cloud
0.90 1.0 0.91 0.92 2.0 Cloud
Not Supported Not Supported Not Supported Optional Optional <cloud>
Not Supported Not Supported Not Supported Optional Optional domain attribute
Not Supported Not Supported Not Supported Optional Optional port attribute
Not Supported Not Supported Not Supported Optional Optional path attribute
Not Supported Not Supported Not Supported Optional Optional registerProcedure attribute
Not Supported Not Supported Not Supported Optional Optional protocol attribute
Image
0.90 1.0 0.91 0.92 2.0 Image
Optional Optional Optional Optional Optional <image>
Required Required Required Required Required <title>
Required Required Required Required Required <url>
Required Required Required Required Required <link>
Not Supported Not Supported Optional Optional Optional <description>
Not Supported Not Supported Optional Optional Optional <width>
Not Supported Not Supported Optional Optional Optional <height>

TextInput
0.90 1.0 0.91 0.92 2.0 TextInput
Optional Optional Optional Optional Optional <textinput>
Required Required Required Required Required <title>
Required Required Required Required Required <description>
Required Required Required Required Required <name>
Required Required Required Required Required <link>

Channel

Legend
Channel
0.90 1.0 0.91 0.92 2.0 Channel
Required Required Required Required Required <channel>
Required Required Required Required Required <title>
Required Required Required Required Required <description>
Required Required Required Required Required <link>
Not Supported Not Supported Required Optional Optional <language>
Not Supported Not Supported Optional Optional Optional <copyright>
Not Supported Not Supported Optional Optional Optional <docs>
Not Supported Not Supported Optional Optional Optional <lastBuildDate>
Not Supported Not Supported Optional Optional Optional <managingEditor>
Not Supported Not Supported Optional Optional Optional <pubDate>
Not Supported Not Supported Optional Optional Optional <rating>
Not Supported Not Supported Optional Optional Optional <skipDays>
Not Supported Not Supported Optional Optional Optional <skipHours>
Not Supported Not Supported Not Supported Not Supported Optional <generator>
Not Supported Not Supported Not Supported Not Supported Optional <ttl>

Item elements

Legend
Category
0.90 1.0 0.91 0.92 2.0 Category
Not Supported Not Supported Not Supported Optional Optional <category>
Not Supported Not Supported Not Supported Optional Optional domain attribute

Enclosure
0.90 1.0 0.91 0.92 2.0 Enclosure
Not Supported Not Supported Not Supported Optional Optional <enclosure>
Not Supported Not Supported Not Supported Required Required url attribute
Not Supported Not Supported Not Supported Required Required length attribute
Not Supported Not Supported Not Supported Required Required type attribute

GUID
0.90 1.0 0.91 0.92 2.0 GUID
Not Supported Not Supported Not Supported Not Supported Optional <guid>
Not Supported Not Supported Not Supported Not Supported Optional isPermaLink attribute

Source
0.90 1.0 0.91 0.92 2.0 Source
Not Supported Not Supported Not Supported Optional Optional <source>
Not Supported Not Supported Not Supported Required Required url attribute

Item

Legend
Item
0.90 1.0 0.91 0.92 2.0 Item
Required Required Required Required Required <item>
Required Required Required Optional Required <title>
Not Supported Optional Optional Optional Required <description>
Required Required Required Optional Optional <link>
Not Supported Not Supported Not Supported Not Supported Optional <author>
Not Supported Not Supported Not Supported Not Supported Optional <comments>
Not Supported Not Supported Not Supported Not Supported Optional <pubDate>