---
title: "XMP namespace — Glossary | LLMind"
description: "A URI that identifies the vocabulary of XMP properties a file uses — LLMind's is https://llmind.org/ns/1.0/."
url: https://llmind.org/glossary/xmp-namespace/
source_format: html
---
[← Glossary](https://llmind.org/glossary/)

# XMP namespace

**A URI that identifies the vocabulary of XMP properties a file uses — LLMind's is https://llmind.org/ns/1.0/.**

An XMP namespace is a stable URI that acts as a unique identifier for a vocabulary of metadata properties. In RDF/XML, properties are written with a prefix — like `dc:creator` or `llmind:entities` — and that prefix is bound to a namespace URI in the document. The URI is what makes the prefix unambiguous globally.

## What a namespace is

Imagine two different organizations both define a property called `author`. Without namespaces, they would collide. With namespaces, one organization uses `org-a:author` (bound to `http://org-a.com/ns/`) and the other uses `org-b:author` (bound to `http://org-b.com/ns/`). The same file can contain both without ambiguity. Namespaces are how RDF solves the naming problem.

## URI stability requirement

The namespace URI must never change or every consumer breaks. That's why LLMind's namespace is versioned: `https://llmind.org/ns/1.0/`. If a future major-version-incompatible change is needed, a new URI — `https://llmind.org/ns/2.0/` — is created. Old files can still be read with the old namespace; new consumers opt in to the new one.

## Prefix conventions

Prefixes are local to each file — you can bind whatever prefix you want to a namespace URI. However, some prefixes have de-facto conventions: `dc:` for Dublin Core, `xmp:` for Adobe XMP, `xmpRights:` for rights, `llmind:` for LLMind. Tools and humans recognize these conventions, making metadata readable and navigable.

## Related terms

-   [XMP](https://llmind.org/glossary/xmp/)
-   [Embedded metadata](https://llmind.org/glossary/embedded-metadata/)

## See also

-   [Custom XMP namespace](https://llmind.org/learn/custom-xmp-namespace/)
-   [LLMind namespace landing](https://llmind.org/ns/1.0/)