Plot Cards

Plot Cards is a free, browser-based writing tool that lets you organize your story and plot ideas as cards on a large freeform canvas. Instead of writing in a linear document, you arrange, group, and rearrange cards visually — like sticky notes on a wall — to build and restructure your plot.

Your work is organized as Books > Pages > Cards, so you can keep multiple projects and scenes cleanly separated. Cards can be freely placed, resized, colored, grouped, and highlighted, making it easy to see the shape of your whole story at a glance.

Features:

• Freeform canvas — place and arrange plot cards anywhere, with 50–200% zoom
• Book / Page / Card structure for organizing multiple projects
• Group cards to move them together; use color and emphasis for visual grouping
• Compile your cards into plain-text output to kick-start drafting
• Character count and adjustable font size
• Light / dark theme, Japanese / English UI
• Runs entirely in your browser — no installation, works on desktop and mobile
• Free to start with no sign-up (saved locally); create a free account for cloud sync across devices
• Export / import your whole library as JSON backups

Plot Cards is ideal for novelists, screenwriters, TRPG scenario writers, and anyone who thinks better by moving ideas around visually.