h-entry

<entry-title>h-entry</entry-title> Tantek Çelik (Editor)

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h-entry is a simple, open format for episodic or datestamped content on the web. h-entry is often used with content intended to be syndicated, e.g. blog posts. h-entry is one of several open microformat draft standards suitable for embedding data in HTML/HTML5.

h-entry is the microformats2 update to hAtom.

Example

Here is a simple blog post example:

<article class="h-entry">
  <h1 class="p-name">Microformats are amazing</h1>
  <p>Published by <a class="p-author h-card">W. Developer</a>
     on <time class="dt-published" datetime="2013-06-13 12:00:00">13<sup>th</sup> June 2013</time>
  
  <p class="p-summary">In which I extoll the virtues of using microformats.</p>
  
  <div class="e-content">
    <p>Blah blah blah</p>
  </div>
</article>

Get started

The class h-entry is a root class name that indicates the presence of an h-entry.

p-name, p-author, dt-published and the other h-entry property classnames listed below define properties of the h-entry.

See microformats2-parsing to learn more about property classnames.

Properties

h-entry properties, inside an element with class h-entry:

• p-name - entry name/title
• p-summary - short entry summary
• e-content - full content of the entry
• dt-published - when the entry was published
• dt-updated - when the entry was updated
• p-author - who wrote the entry, optionally embedded h-card(s)
• p-category - entry categories/tags
• u-url - entry permalink URL
• u-uid - unique entry ID
• p-geo - geophysical location the entry was posted from, optionally embed h-geo
  Main article: h-geo
• p-latitude - decimal latitude
• p-longitude - decimal longitude
• p-altitude - decimal altitude

The following experimental properties are in use in the wild but are not yet part of the spec:

• u-in-reply-to - the URL which the h-entry is considered a reply to or comment on.
  • Potentially optionally an embedded (or nested?) h-entry (for reply contexts) but I’m the only one doing that right now so not considered a recommendation --bw 16:44, 13 June 2013 (UTC)
• p-comment - optionally embedded (or nested?) h-entry(ies), each of which is a comment on/reply to the parent h-entry. See comment-brainstorming.

The following properties are proposed additions based on various existing link preview markup conventions which are not yet used in the wild (Related: link-preview-brainstorming)

• u-photo
• u-audio - consider special u- parsing rules for <audio>
• u-video - consider special u- parsing rules for <video>

All properties are optional.

Status

h-entry is a microformats.org draft specification. Public discussion on h-entry takes place on h-entry-feedback, the #microformats irc channel on irc.freenode.net, and microformats-new mailing list.

h-entry is ready to use and implemented in the wild, but for backwards compatibility you should also mark h-entries up as classic hAtom entries.

Property Details

(stub, to be expanded)

hAtom-specific implementations that perform custom display or translation (e.g. to Atom XML) SHOULD prefer p-name over p-entry-title, and use p-entry-title value(s) as a fallback if there is no p-name.

FAQ

• What is the p-name of a note?
  • A few options, from simplest to most detailed.
    • same as the p-content/e-content property.
    • same as the title element on the note permalink post page. When publishing a note on its own permalink post page, the contents of the note are likely abbreviated for the title of the page. The same abbreviation can be used for the p-name.
    • first sentence of the p-content/e-content property. It may be better for syndication and link-preview purposes to provide just the first sentence of the note as the p-name. Similarly if only a portion of the content is syndicated to other sites, that portion can be marked up as the p-summary.
• ...

Examples in the wild

Real world in the wild examples:

• ... add uses of h-entry you see in the wild here.
• spreadly marks up share permalink pages with h-entry, as well as minimal h-cards and experimental p-like properties (example)
• Numerous newer W3C specs, e.g.
  • CSS Values and Units Module Level 3 - 2013-04-04
  • CSS Conditional Rules Module Level 3 - 2013-04-04
  • CSS Paged Media Module Level 3 - 2013-03-14
  • CSS Counter Styles Level 3 - 2013-02-21
• SemPress is a WordPress theme that supports h-card, h-feed/h-entry.
• The Pastry Box Project use h-card and h-entry markup on their homepage and individual thoughts pages
• Aaron Parecki uses h-entry to mark up notes, e.g. 2012/230/reply/1.
• Tantek Çelik uses h-entry on his home page, as well as h-entry on all post permalinks, e.g. 2012-243 post, with rel-prev/rel-next (if applicable) to indicate prev/next posts
• Barnaby Walters uses h-entry on all notes and articles, as well as nested within notes as reply contexts example and comments example.

Main article: validators

Test and validate microformats2 markup in general with:

• https://pin13.net/mf2/ - enter your markup directly
• https://pin13.net/ - enter a URL to a page to test where it says "Microformats Parser"

Backward Compatibility

Publisher Compatibility

For backward compatibility, you may wish to use classic hAtom classnames in addition to the more future-proof h-entry properties, for example:

<div class="h-entry hentry">
  <h1 class="p-name entry-title">My great blog post</h1>
</div>

Parser Compatibility

Microformats parsers should detect classic properties and parse them as microformats2 properties. If an "h-entry" is found, don't look for an "hentry" on the same element.

Compat root class name: hentry
Properties: (parsed as p- plain text unless otherwise specified):

• entry-title - parse as p-name
• entry-summary
• entry-content - parse as e-
• published - parse as dt-
• updated - parse as dt-
• author - including compat root vcard in the absence of h-card
• category
• geo - parse as p-geo h-geo including compat root geo
• latitude
• longitude

Background

This work is based on the existing hAtom microformat, and extensive selfdogfooding in the indie web camp community.

Design Principles

(stub, expand)

See Also

• microformats2
• microformats2-parsing
• h-geo
• hCard