Metadata
I miss del.icio.us – the web’s discovery-engine and link classifier
The early 2000s social bookmarking and link-sharing website was great for organizing and discovering the web by topic. I really wish it still was around.
Metadata
Image Files
Can you use a WebP file as an Open Graph Protocol image?
Do you still need to maintain webpage thumbnails/link previews in legacy image formats, or have apps caught up with the WebP revolution? It’s a bit complicated.
Metadata
How to label a webpage as being out-of-date
Humans will understand an “out-of-date” label near an article’s dateline. Here’s how to make search engines aware of outdated pages in a machine-readable format.
Metadata
The difference between RDFa’s property and rel attributes
You can easily get unexpected HTML+RDFa Lite parsing results by unknowingly using it with RDFa Core attributes that just happens to also be HTML attributes.
Image Files
Embed XMP sidecars into image files with embed_xmp
Here’s my new utility program and Ruby library for embedding XMP sidecar files (.xmp/.xml) into JPEG, PNG, SVG, and WebP image files.
HTML
URLs don’t belong in <meta> elements
Why the <link> element, a metadata element for link type data, is better suited for links than the more generic <meta> element.
Metadata
Put your image metadata to use: embed it in your image files
Put your existing image metadata to good use. Embed descriptions, copyright information, and more into your images to improve Bing/Google Image Search results.
Copyright
Ctrl blog is now licensed under Creative Commons licenses
I’ve applied a permissive content license in hopes to enable more free-culture sharing and attract more incoming links.
Copyright
Copyright and the distributed peer-to-peer web
An investigation into the legal-side and international copyright law when publishing on distributed peer-to-peer internet alternatives.
Web Browsers
Changes to how Mozilla Readability extract metadata in Firefox 63
Firefox’s Reading Mode now prefers Dublin Core and Open Graph Protocol metadata when available over other metadata sources.
Open Standards
Why are Facebook and Twitter so bad at parsing RDFa metadata?
Social networks are some of the web’s largest consumers of RDFa metadata. Yet, their document parsers really suck at handling it.