Portability and Vendor Lock-in

Notepub keeps lock-in low by separating concerns cleanly:

• Content: plain Markdown files.
• Structure: YAML rules.
• Presentation: templates + CSS/JS assets.
• Output: static HTML and JSON/XML artifacts.

Practical portability outcomes

• You can move content to another static generator with a transform step.
• You can change hosting providers without changing your source files.
• You can keep old generated snapshots independent from runtime servers.

What is still coupled

• Your chosen frontmatter conventions.
• Your theme template contract.
• Custom rules semantics around links/collections.

These are still easier to migrate than database-driven CMS internals.