GhostLabs Undercard

Undercard Pro

Everything above is free and stays free. Pro adds the machine-readable half:

• JSON-LD structured data — a connected @graph emitting a Person node per author and an Article node that references them by @id , so the article points to each credited person’s full Person node, with the credentials they filled in, rather than carrying only a name.
• Credentials as structured data — jobTitle , worksFor , alumniOf and knowsAbout . The fields are free to fill in and free to display; publishing them to a machine is what Pro adds.
• Yoast and Rank Math integration — enriching the graph those plugins already emit, rather than competing with it.
• Author profile pages — replacing the theme’s author archive with a composed profile.

This plugin shows you exactly what you would publish before you buy anything. Look for Structured data preview on any user profile screen: it renders the Person node your site would emit and marks the four properties an upgrade unlocks.

External services

This plugin contacts one external service, and not when you install or activate it.

Gravatar (Automattic). When a card needs an avatar and the author has not uploaded a photo, the plugin asks Gravatar whether one exists for that account before falling back to initials. WordPress itself cannot answer this — it returns an avatar URL for any address, and Gravatar serves a generated placeholder behind it, so every author would appear to have a photo.

• What is sent: a request to the avatar URL WordPress itself generates, which contains a hash of the user’s email address. No new data is created or transmitted by this plugin; it is the same URL core already uses to display avatars.
• When: only while WordPress’s own “Show Avatars” setting is on, only for users with an account, and the answer is cached for up to a week, so this is rare.
• Where the image comes from: if a Gravatar exists, the visitor’s browser loads it from Gravatar, exactly as core avatars do anywhere else on the site.

Turning off Settings → Discussion → Show Avatars stops both entirely, and an author who uploads a photo is never looked up at all.

Gravatar terms: https://automattic.com/terms/ — privacy: https://automattic.com/privacy/

Links to GhostLabs — not a service. The plugin links to two GhostLabs sites from wp-admin and the block editor. It never contacts either one: nothing is requested from them in the background, and the plugin sends them nothing.

• https://theghostlab.io — Undercard Pro’s product page ( /undercard ) and this plugin’s documentation ( /docs/undercard ). A link to the product page names the screen it was clicked on (for example ?from=settings ), and carries nothing else.
• https://enter.theghostlab.io/account — your GhostLabs account, where Undercard Pro is downloaded after you buy it. It is linked from Settings → Undercard → Undercard Pro , under Have a license? , and opens in a new tab.

Following either link is an ordinary visit to that site in your browser.

GhostLabs terms: https://theghostlab.io/terms-of-service — privacy: https://theghostlab.io/privacy-policy

Nothing else is requested from anywhere. Fonts are bundled with the plugin and served from your own site; nothing is loaded from a CDN.

Source code

The complete, unminified source of this plugin — including the block sources the compiled assets are built from — is published at:

https://github.com/theghostlab/wp-ghostlabs-undercard

The repository’s committed build/ directory is the readable build, and pnpm install --frozen-lockfile && GHOSTLABS_MINIFY=0 pnpm run build reproduces it byte for byte. Released versions of the plugin ship the same sources built minified, which pnpm install --frozen-lockfile && pnpm run build reproduces byte for byte.