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Card System

In FlexNote, cards are the fundamental units for organizing knowledge. Each card can exist independently or be combined, nested, and linked within unlimited whiteboards. You can think of a card as a structured “information container.”

Card Types

Core Features of Cards​

  • 🧱 Multiple Types Supported: Not only text cards but also PDF, video, web pages, images, and more
  • 🖇️ Bidirectional Linking: Quickly create links using @ to form a knowledge network
  • 🧩 Nestable: Cards can contain other cards, supporting hierarchical construction
  • 🧭 Visual Presentation: All cards can be freely arranged by dragging into whiteboards to build your knowledge map
  • 🧠 Reusable: Cards are globally unique and reusable; modifications sync automatically wherever referenced

Supported Card Types​

TypeDescription
Note CardSupports Markdown syntax, bidirectional links, block operations
Image CardAutomatically generated by dragging in images
Video CardPlays local/network videos, supports Baidu Netdisk imports
Video AnnotationAnnotations automatically generate cards
Audio CardSupports inserting audio files
PDF CardDisplays PDF pages with optional cover and annotations
PDF HighlightHighlights in PDFs automatically generate cards
Web ClippingAutomatically extracts and saves webpage content as cards
Mind Map CardCan create new mind maps or import XMind directly
Attachment CardSupports inserting files directly into whiteboards, clickable to open system file manager

Card Editing and Management​

On the card list page, you can view all cards and perform search, sorting, filtering, export, deletion, and other operations.

  • ✅ Cards can be opened in overlays or new tabs for real-time editing and saving
  • ➕ Drag cards into whiteboards or other cards to nest
  • 🔗 Use @ to create references
  • 🏷️ Add tags and properties, combine with database filtering

Card Reference

Card Reference

Card Reuse​

Traditional note tools often store content in only one place. In FlexNote, cards are globally unique and reusable.

This means:

✅ One card can simultaneously exist on multiple whiteboards, each showing a reference;

✨ Changes to a card automatically sync to all places referencing it;

🧩 Reusing cards in different contexts reduces redundant work and improves organizational efficiency.

This “decentralized content + multi-perspective presentation” approach greatly enhances the flexibility and recomposability of knowledge.

💡 Illustration placeholder: showing one card existing on multiple whiteboards

Cards Combined with Databases​

Cards can exist independently or be managed uniformly within tag databases:

  • Custom fields (checkbox, date, status, etc.)
  • Support multiple views (table, kanban, list)
  • Combined filtering and querying

This enables FlexNote to be used not only for note-taking but also as a lightweight database tool for project management, task tracking, literature organization, and more.

Card Database

Use Case Examples​

  • 📚 Book notes: one main card per book, with chapters or highlights as sub-cards
  • 🎬 Video learning: annotation cards for each time point
  • 🧠 Mind maps: each node in the structure is an independent card
  • 🌐 Information collection: web clips converted to standard cards for easy categorization and reference

Tips​

  • Use the shortcut @ to quickly insert existing card links
  • Drag multiple cards to organize them into containers in bulk
  • Paragraphs dragged from note cards into whiteboards automatically generate new cards

The card system is the core of FlexNote. Master it well, and you will have a clearer and more flexible way to organize knowledge.