Open Source Friday Exploring Joplin: Note-Taking App with Privacy First

Key Concepts

• Joplin: A flexible, open-source note-taking and organization application.
• Privacy-Focused Software: Software designed to protect user data and privacy.
• Open Standards and Formats: Using widely accepted and accessible data formats that allow users to control and export their data.
• End-to-End Encryption (E2EE): A security measure where data is encrypted on the sender's device and can only be decrypted by the intended recipient, ensuring that even the server provider cannot access the content.
• Plugin Ecosystem: A system that allows third-party developers to create extensions and add new functionalities to the core application.
• Markdown: A lightweight markup language with plain-text formatting syntax, widely used for creating notes and documentation.
• Rich Text Editor: A text editor that allows for more advanced formatting options, similar to word processing software.
• Optical Character Recognition (OCR): Technology that converts images of text into machine-readable text, enabling searchability within images and PDFs.
• Speech-to-Text (STT): Technology that converts spoken language into written text, with Joplin's implementation supporting offline use.
• Large Language Models (LLMs): Advanced AI models capable of understanding and generating human-like text, with potential applications in summarizing, searching, and interacting with notes.
• Web Clipper: A browser extension that allows users to save web pages, articles, or specific content directly into their note-taking application.
• Discourse: An open-source platform for online discussion and community building, used by Joplin for community interaction.

Joplin: A Deep Dive into an Open-Source Note-Taking Solution

This session of Open Source Friday features Laurent Kosek, the creator of Joplin, a privacy-focused note-taking and organization application. The discussion highlights Joplin's origins, core features, extensibility through plugins, and future development plans, emphasizing its commitment to user control and data privacy.

Origins and Problem Solved

Laurent Kosek initiated the development of Joplin approximately nine years ago due to dissatisfaction with existing note-taking applications. He experienced restrictions on data synchronization and download capabilities, leading to a realization that his important data was not truly under his control. This prompted him to create his own application, initially for mobile, and later expanding to desktop to ensure data synchronization across all devices.

The core problem Joplin aims to solve is the lack of user control over personal data in proprietary note-taking services. Joplin addresses this by:

• Open Standards and Formats: Utilizing open formats allows users to easily export and manipulate their data, ensuring it always belongs to them.
• Privacy: Implementing end-to-end encryption (E2EE) for synchronized data means that even the server owner cannot read the content.

Core Features and Functionality

Joplin offers a comprehensive suite of features designed for efficient note-taking and organization:

• Cross-Platform Availability: Available on mobile (Android, iOS) and desktop (Windows, Linux).
• Hierarchical Notebook Structure: Notes are organized into notebooks, which can be further nested for better organization.
• Customizable Note Display: Users can select which information is displayed in the note list, such as due dates, and adjust the display style.
• Markdown Editor: A built-in markdown editor provides a convenient way to format notes, with a live preview of the rendered output.
• Rich Text Editor: An alternative editor for users who prefer a more traditional word-processing interface.
• Powerful Search: Capable of handling hundreds of thousands of notes, leveraging SQLite full-text search.
• OCR Integration: Built-in Optical Character Recognition (OCR) allows for searching text within images and PDFs attached to notes.
• Handwritten Notes: Support for creating handwritten notes, particularly useful on tablets and phones, with options for various drawing tools and annotations.
• Speech-to-Text (Offline): A mobile feature utilizing a local, whisper-like AI model for accurate offline transcription of spoken words into text, preserving privacy and functionality without an internet connection.
• Note History: Automatically records changes to notes for the past 90 days, allowing users to revert to previous versions.
• Web Clipper: A browser extension (for Chrome, Firefox, Edge) that enables saving web pages, articles, or parts of pages as markdown or HTML.
• Keyboard Shortcuts: Customizable shortcuts for efficient navigation and actions.
• Internationalization: Support for a wide range of languages, with some, like Catalan, being 100% translated.

Plugin Ecosystem: Extending Functionality

Joplin boasts a robust plugin ecosystem with approximately 200 community-contributed plugins, significantly expanding the application's capabilities. Notable plugins discussed include:

• Kanban Board: Transforms notes into a visual Kanban board for project management.
• Mass Mode: Enables calculations and organization of data, useful for planning events like trips.
• Jarvis (AI Assistant): Integrates with AI models (like GPT, Gemini, or local LLMs) to perform tasks such as summarizing notes, answering questions about content, and annotating notes. This plugin emphasizes the ability to use local AI models, ensuring data privacy.
• Note Tabs: Adds tab functionality to notes for better organization within the application.
• Calendar Plugin: Integrates a calendar view for managing time-sensitive notes.
• Backup Plugin: Automatically creates backups of notes.

Plugins marked with a "crown" icon are considered "recommended" and are either developed by the core team or by trusted, long-term contributors, ensuring reliability and security.

Synchronization and Collaboration

Joplin offers flexible synchronization options to keep data consistent across multiple devices:

• Synchronization Services: Supports various services including open-source options like Nextcloud, WebDAV-compatible servers, and commercial services like Dropbox and OneDrive.
• Joplin Cloud: Joplin's own cloud service, developed to facilitate features like sharing and publishing notes.
  • Sharing: Allows users to share entire notebooks with friends or colleagues, enabling collaborative editing.
  • Publishing: Enables publishing notes to the internet, generating a shareable link that can be accessed via a web browser without requiring the Joplin application.
• Offline Functionality: The application is designed to work completely offline, with data stored locally. Synchronization occurs automatically when an internet connection is available.

Security and Encryption

• End-to-End Encryption (E2EE): All synchronized data is encrypted using E2EE. Users set a password, and their data is encrypted before being sent to the cloud. This ensures that even if a server is breached, the data remains unreadable without the user's password. The encryption and decryption process is managed automatically across all devices.
• Data Deletion: Deleting data follows the same synchronization process, ensuring consistency across all connected devices.

Future Development Plans

Laurent Kosek outlined several exciting future directions for Joplin:

• LLM Integration: Exploring the use of Large Language Models (LLMs) for advanced features like:
  • Note Summarization: Automatically generating summaries of notes.
  • Intelligent Search: Enabling users to find notes by describing their content, even without remembering specific keywords.
  • Documentation Q&A: Ingesting Joplin's documentation to allow users to ask questions and receive answers directly within the application.
• Mobile Application Redesign: Modernizing the design of the mobile application to improve user-friendliness, aesthetics, and intuitiveness, better reflecting the extensive work put into its development.
• Community Contributions: Encouraging community involvement in:
  • Bug Triage and Fixing: Assisting in identifying, labeling, and fixing bugs reported by users.
  • Feature Development: Contributing to new features by discussing ideas and implementation strategies on the forum before coding.

Community Contributions and Engagement

Joplin thrives on community contributions. Laurent emphasized the need for help with:

• Issue Triage: Reviewing and labeling incoming issues.
• Bug Fixing: Addressing reported bugs, which can be a good entry point for new contributors.
• Feature Implementation: Developing new features, with a strong recommendation to discuss ideas on the forum first to ensure alignment with user needs and project direction.

Community discussions are encouraged on the Joplin Forum, which is considered more valuable than GitHub issues for gathering feedback from both users and developers. Joplin also maintains a Discord server and a YouTube channel with detailed videos on features and usage.

Getting Started with Joplin

• Download: Binaries are available on GitHub (Laurent22/Joplin), but the official website provides a more user-friendly download experience, auto-detecting the correct version for the user's operating system.
• Migration: Joplin offers import options for various formats, including Evernote, HTML, Markdown, text, and OneNote.
• Support: Users can find help and engage with the community through the Joplin Forum, GitHub issues, and the Discord server.

Laurent Kosek expressed gratitude for the opportunity to present Joplin on Open Source Friday and encouraged viewers to explore the project, star the repository, and contribute to its continued development.