<entry-title>h-review</entry-title> Tantek Çelik (Editor)
h-review is a simple, open format for publishing reviews on the web. h-review is one of several open microformat draft standards suitable for embedding data in HTML/HTML5 on the web.
Per CC0, to the extent possible under law, the editors have waived all copyright and related or neighboring rights to this work. In addition, as of 2021-10-21, the editors have made this specification available under the Open Web Foundation Agreement Version 1.0.
Here is a simple review example:
<div class="h-review"> <h1 class="p-name">Microformats: is structured data worth it?</h1> <blockquote> <a class="p-item h-item" href="http://microformats.org">Microformats</a> are the simplest way to publish structured data on the web. </blockquote> <p> <data class="p-rating" value="5">★★★★★</data> Published <time class="dt-reviewed" datetime="2013-06-12 12:00:00">12<sup>th</sup> June 2013</time> by <a class="p-reviewer h-card" href="http://example.com">Joe Bloggs</a>. </p> <div class="e-description"> <p>Yes, microformats are undoubtedly great. They are the simplest way to markup structured data in HTML and reap the benefits thereof, including using your web page as your API by automatic conversion to JSON. The alternatives of microdata/schema and RDFa are much more work, require more markup, and are more complicated (harder to get right, more likely to break).</p> </div> </div>
h-review is a root class name that indicates the presence of an h-review.
p-name, p-item, p-rating, dt-reviewed, p-reviewer, e-description and the other property class names listed below defined elements as properties of the h-review.
h-item is a root class name that indicates an embedded h-item for the p-item property.
h-card is a root class name that indicates an embedded h-card for the p-reviewer property.
See microformats2 parsing specification to learn more about property class names.
h-review properties, inside an element with class h-review:
p-name- name of the review
p-item- thing been reviewed, including embedded microformat for e.g. business or person (h-card), event (h-event), place (h-adr or h-geo), product (h-product), website, url, or other item (h-item).
p-reviewer- person who authored the review, optionally with an embedded h-card
dt-reviewed- date time of when the review was written
p-rating- value from 1-5 indicating a rating for the item (5 best).
p-best- define best rating value. can be numerically lower than worst.
p-worst- define worst rating value. can be numerically higher than best.
e-description- the full text written evaluation and opinion of the reviewer
p-category- freeform categories or tags applied to the item by the reviewer
u-url- review permalink URL
All properties are optional.
h-review is a microformats.org draft specification. Public discussion on h-review takes place on h-review-feedback, the #microformats #microformats chat channel on irc.freenode.net, and microformats-new mailing list.
h-review is ready to use and implemented in the wild.
(stub, add any property explanations here)
Examples in the Wild
- … add any h-review examples you find in the wild
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"
For backward compatibility, you may wish to use classic hReview 0.4 (in progress) classnames in addition to the more future-proof h-review properties, for example:
<div class="h-review hreview"> <h1 class="p-name fn">My great review</h1> </div>
Microformats parsers should detect classic properties and parse them as microformats 2 properties. If an "h-review" is found, don't look for an "hReview" on the same element.
Compatibility root class name: hreview
Properties: (parsed as p- plain text unless otherwise specified)
fn- parse as p-name of the item being reviewed (p-item h-item p-name)
photo- parse as u-photo of the item being reviewed (p-item h-item u-photo)
url- parse as u-url of the item being reviewed (p-item h-item u-url)
reviewer- including compat root vcard in the absence of h-card
dtreviewed- parse as dt-
description- parse as e-
rel=tag- parse as p-category
rel="self bookmark"- parse as u-url. note that
relattribute value is treated as a space separated set, thus any presence of "self" and "bookmark" within such a set in a rel value is accepted.
Note: The hReview 0.4 (in progress) format has three properties which make use of
rel attribute, these are
tag, permalink (via the
bookmark values) and
license. Microformats 2 parsers SHOULD map these URLs into the page scoped rel collection.
h-review is based on the existing hReview 0.4 (in progress) specification.