TateGaki adds vertical writing (tategaki) to Google Docs™ — a feature not natively available.
Write directly in a vertical editor within Google Docs™, using traditional Japanese genkō yōshi (manuscript paper) formats. Whether you're writing novels, essays, or any Japanese text, TateGaki provides an authentic vertical writing experience.
Key Features:
400-character (20×20) and 200-character (10×20) genkō yōshi manuscript paper
Plain vertical/horizontal writing modes
Ruby (furigana) text input
Japanese line-break rules (kinsoku shori)
Real-time character count
Undo/Redo (Ctrl+Z/Y, up to 100 steps)
Copy & paste support (Ctrl+V)
Grid lines ON/OFF toggle
Font selection: Mincho (Noto Serif JP) / Gothic
Export to Google Docs™ table (preserves manuscript paper layout)
Save/Load to Google Drive™ (auto-saved to "TateGaki" folder)
Print preview (canvas to PNG, browser PDF save)
How to Use:
Install TateGaki from Google Workspace Marketplace™
Open a Google Docs™ document
Go to Extensions → TateGaki → Open Vertical Editor
Start writing vertically!
Supported Environments:
Google Chrome™ (recommended), Microsoft Edge
Windows / macOS / ChromeOS
Privacy & Data:
TateGaki only accesses files it creates in your Google Drive™ ("TateGaki" folder). It does not access, read, or modify any other files in your Drive. No user data is collected, stored, or shared with third parties.

Google Docs™, Google Drive™, Google Workspace Marketplace™, and Google Chrome™ are trademarks of Google LLC.