How it works
The image is served from /api/badge/….svg and generated from the URL — no cookies, no JavaScript on your side, and it caches at the edge. Wrap it in a link to the page it references and you have a normal, crawlable backlink. The badge never shows a price and never appraises a specific copy; it points at the identification guide.
Prefer automatic embeds? Our oEmbed provider returns a rich card for any NMLP page URL.
Questions
What is a reference badge?
A small SVG image you can embed anywhere. It is generated on the fly from a URL (no tracking, no script), and you wrap it in a link back to the NMLP page it references — for example a publisher's first-edition guide.
Is it really free, and can I use it commercially?
Yes. The badge image is served under a permissive hot-link policy and the underlying data is CC BY 4.0. Booksellers, blogs, libraries, and wikis are all welcome to use it.
Does the badge make a claim about my specific copy?
No. Badges are reference/guide labels — a link to the identification guide, a count of documented points, or a simple 'Grounded by NMLP' mark. They never appraise a copy or state a per-copy verdict, and they never show a price.
How does the backlink work?
The embed code is an <a> link wrapping an <img>. The image loads from our badge endpoint; the link points to the referenced NMLP page. That is a normal, crawlable backlink.
Do you support oEmbed?
Yes — our oEmbed provider lives at /api/oembed. Platforms that discover it can render a rich card for a pasted NMLP URL.
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