Joplin works by storing notes inside local notebooks that can later be synchronized across devices using cloud services chosen by the user. After installation, users create notebooks and begin writing notes using either a Markdown editor or a rich text editor depending on their preferred workflow.

The app is built around a local-first productivity model. Notes remain stored on the device while optional synchronization copies encrypted versions across connected devices. This approach gives users more control over privacy, storage location, and backups compared to fully cloud-dependent note platforms.

Users can organize information through notebooks, nested folders, tags, and search tools. The app also supports attachments such as PDFs, images, audio files, and documents directly inside notes. One of Joplin’s most practical features is the web clipper extension, which allows users to save webpages, research articles, screenshots, and online references directly into notebooks for offline access later.

Advanced users can expand functionality through plugins that add calendars, kanban systems, enhanced editing tools, and workflow automation. Joplin creates value by combining straightforward note organization with privacy-focused storage and synchronization options that remain largely under the user’s control.