MarkdownDB open-source library giving you an SQL API to Markdown files

In plain words

MarkdownDB is an open-source library that provides an SQL API for querying Markdown files. Launched in October 2023, it allows developers to write SQL queries against Markdown documents as if they were database tables. The tool is designed for developers who want to work with Markdown content programmatically without converting files to traditional databases. It bridges the gap between flat Markdown files and structured data access patterns.

written from the facts on this page · September 2026

From the sources

An open JS library to turn markdown files into structured, queryable data (SQL and JSON). Build rich markdown-powered sites fast and reliably. Extract structured markdown data from your markdown frontmatter. Extract tags from markdown body and from tags frontmatter field. Compute additional metadata fields on the fly with custom functions. Markdown files already contain structured data — frontmatter fields, tags, links, tasks. Most tools ignore it. MarkdownDB extracts it, indexes it, and makes it queryable, without touching your files or locking you into a platform. For example, your blog posts. Each file can have a YAML frontmatter header with metadata like title, date, tags, etc. Use the…from markdowndb.com

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