Substack to PDF, Markdown, Text & JSON is a Chrome extension designed to allow users to download Substack posts in various formats, including PDF, Markdown, TXT, and JSON. This tool is ideal for avid readers, researchers, and content creators who wish to preserve their favorite newsletters offline. The extension ensures that users can save individual posts or batch-download entire archives with a single click, making it a versatile choice for anyone who wants to retain access to valuable content without relying on online platforms.

The extension prioritizes user privacy, collecting no data and requiring no account setup. Users can easily navigate to any Substack post, select their preferred export format, and download content quickly and efficiently. With features tailored for different user needs—from simple text exports for casual reading to structured JSON data for developers—this tool effectively supports a wide range of use cases, including academic research, content curation, and personal knowledge management.