TateGaki is an add-on for writing Japanese text vertically in Google Docs™.

You can write directly in a dedicated vertical-writing editor. TateGaki supports Japanese manuscript paper layouts, ruby text, Japanese line-breaking rules, export to Google Docs™, saving to Google Drive™, printing, and PDF output.

It is suitable for novels, essays, scripts, school compositions, book reports, and other Japanese vertical-writing projects.

■ Main free features

・400-character manuscript paper: 20 characters × 20 lines
・200-character manuscript paper: 10 characters × 20 lines
・Plain vertical and horizontal writing modes
・Ruby text (furigana)
・Japanese line-breaking rules (kinsoku shori)
・Real-time character count
・Undo and redo: up to 100 steps
・Copy and paste support
・Grid lines on/off
・Font selection: Noto Serif JP or Gothic
・Table export to Google Docs™
・Save to and load from Google Drive™
・Print preview and PDF saving through the browser

■ TateGaki Pro — paid plan

In addition to all free features, TateGaki Pro provides 6 preset formats:

・Shinsho format: 40 characters × 15 lines
・Bunko format: 40 characters × 16 lines
・Shiroku format: 42 characters × 17 lines
・A5 format: 50 characters × 18 lines
・Large-text format: 34 characters × 14 lines
・40 characters × 30 lines: 1,200 characters per page

These are preset formats. TateGaki Pro does not currently allow arbitrary character and line counts.

Pricing:
・JPY 500 per month, tax included
・JPY 1,500 per year, tax included

Your selected plan automatically renews every month or year until canceled.

You can cancel at any time through the Stripe customer portal:

https://billing.stripe.com/p/login/cNiaEQdnt40L29P9RFdAk00

Cancellation stops future renewals and charges. Pro features remain available until the end of the current billing period. No prorated refunds are provided.

■ How to use TateGaki

1. Install TateGaki from Google Workspace Marketplace™.
2. Open Google Docs™ in a desktop web browser.
3. Select “Extensions” → “TateGaki” → “Open vertical writing editor.”
4. Start writing vertically.

■ Supported environment

・Google Docs™ on desktop web browsers
・Google Chrome™ recommended
・An internet connection is required

Add-ons have limited availability in the smartphone and tablet versions of Google Docs™.

■ Privacy and data handling

TateGaki accesses only the data required to provide its features: the currently open document in Google Docs™, files created by TateGaki in Google Drive™, and the email address of the account used with the add-on.

Text entered or created in TateGaki is generally processed only in the browser, Google Docs™, and the user’s own Google Drive™. Manuscript text and document content are not sent to Stripe or other external servers.

For TateGaki Pro subscription verification and payment processing, the email address of the account used with the add-on is sent to Stripe. Payment information, including credit card numbers, is collected and managed directly by Stripe. The developer does not store card details.

For service improvement, TateGaki may record only the domain portion of the email address—the part after “@”. The part before “@” and manuscript content are not recorded.

■ School and organization licensing

Site licenses, invoicing, and bulk deployment are available for schools and organizations.

https://tategaki.site/organization.html

■ Support the development — optional

https://ofuse.me/c0443beb

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