60 lines
2.2 KiB
Markdown
60 lines
2.2 KiB
Markdown
+++
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draft = true
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title = "Using OpenGraph with Zola"
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[extra]
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image = "/img/blogposts/opengraph-example-2022-12-16.png"
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tags = ["web", "zola", "opengraph"]
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authors = ["Ydreniv"]
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+++
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## What is OpenGraph
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After having [tried Microformats](@/blog/2022-12-13-beginner-hcard-hentry.md),
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I've made a first implementation of [OpenGraph](https://ogp.me/).
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This is an initiative launched by Facebook, and widely adopted, to give some metadata about webpages.
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This allows external applications to preview the links, displaying the title, linked to the url, a description, a picture etc.
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## How I did it with Zola
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```html
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{% macro opengraph(title, url, content, type="", image="") %}
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<meta property="og:title" content="{{ title }}" />
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<meta property="og:url" content="{{ url }}" />
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<meta property="og:description" content="{{ content | safe | truncate(length=144) }}" />
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{% if image %}
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<meta property="og:image" content="{{ image }}" />
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{% endif %}
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{% if type %}
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<meta property="og:type" content="{{ type }}" />
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{% endif %}
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{% endmacro %}
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```
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In the templates where I want it, I can then do something along the following :
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```html
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{% import "macros/opengraph.html" as opengraph_macros %}
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...
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{% block head_extra %}
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{{ opengraph_macros::opengraph(title=page.title, url=page.permalink, content=page.content, type="website", image=config.base_url ~ "/img/project-spg/%5BMCS-003%5D%20Window%20to%20the%20Fire.png") }}
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{% endblock %}
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```
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## Comparison with Microformats
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While OpenGraph is not meant to be the same as Microformats, they do share some similarities.
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I use them both on my blog posts, to semantically represent various metadata about those posts.
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However, while mainstream applications (Discord, Twitter, Facebook etc) support OpenGraph, they tend not to support Microformats.
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This greatly diminishes the use of it.
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But I prefer Microformats nonetheless.
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I feel like they are better standardized, and suit the "small-scale" web better.
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they don't require additional html elements, only some more classes.
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And Microformats are more versatile.
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There are more properties available, and one can represent several objects on a single webpage, contrary to Opengraph.
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