Names, furigana and addresses on Japanese forms, in the right fields and the right format
Forms split into family name, given name, furigana and prefecture-to-street fields get filled in one click. You review everything in a preview first.
Built for what makes Japanese forms hard
Handles split fields as they are
Fills split family/given names, furigana, postal code, phone number and prefecture-to-building address fields in the shape each field expects.
Rules first, AI as a helper
Fields are classified by rules first; only the ambiguous ones are classified by the AI you configure. The values themselves are produced by fixed logic.
Review in a preview before filling
See the list of fields and values before anything is entered. Fields that already have a value are never overwritten.
Multiple profiles and addresses
Keep up to 10 profiles and any number of addresses. Each address can be tied to the profile that uses it. The toolbar icon shows what is registered and which profile is in use.
Designed to keep your profile values local
Your profile values are never sent anywhere. When you configure an AI provider, only field metadata (name, label and the like) is sent.
入力内容の確認
- 姓山田
- 名太郎
- セイヤマダ
- 郵便番号100-0001
- 都道府県東京都
- 市区町村・番地千代田区千代田1-1
- Residence東京都千代田区千代田1-1 千代田ビル101AI判定
お申し込み
お申し込み
The extension's interface is in Japanese.
See it in action
A two-minute demo. It shows the flow from reviewing the preview to filling a form, on real screens.
Four steps
Register
In the settings page, register your name, furigana, email, phone number and addresses. You can register several addresses.
Press the button
Press "JushoAI で入力" that appears near the form.
Review the preview
Check the list of fields and values. If you registered several addresses, pick one here.
Fill
Press 入力する (fill) and only the fields you reviewed are filled.
Supported fields
Names
Works with separate family and given name fields or a single field. For a single field it reads the field's example text to decide whether to put a space between them.
Furigana
Supports full-width katakana, hiragana and half-width katakana, converting to match the field's example text or description.
Addresses
Supports addresses split across fields such as prefecture, city, street and building. Prefecture dropdowns are matched even when the notation differs, such as 東京 versus 東京都.
Phone and postal code
Handles hyphenated and plain numbers, in a single field or split fields, judged from the field's example text and maximum length.
Birthday, gender, age group and school
The birthday is entered as year, month, day or era. Gender and age group go into dropdowns and radio buttons, and the school and department into matching fields.
Safe filling
Fields that already have a value are not overwritten, and values longer than the maximum length are not entered but flagged.
AI, only when you want it
The default is "off". Choose a provider in the settings page only if you want AI to help with fields the rules cannot decide.
OpenAI-compatible API
Presets for OpenAI, Groq, Mistral, Ollama and LM Studio. Enter the base URL, model name and API key.
Google Gemini
Enter the model name and API key.
Built-in browser AI
Chrome (Gemini Nano) or Edge (Phi-mini). Needs a flag and a restart, and nothing leaves your device.
AI 判定はオフです
ルールで判定できない欄だけ AI で補助できます。設定ページで AI プロバイダを選んでください。
ルールによる入力は AI なしでも使えます。
Privacy
Only field metadata is sent
If you configure an AI provider, the name, label, placeholder, nearby heading, type and maxlength of fields are sent to it. Your profile values and values already in fields are not. Labels and headings are text shown on the page, so personal information visible on the page can be part of what is sent.
Network only on click
Merely opening a page never contacts an AI provider.
API keys are stored encrypted
Leaked storage alone cannot decrypt them. The extension's own code can still read them.
Install
- In Chrome, install from the Chrome Web Store. In Edge, install from Edge Add-ons. In Firefox, install from Firefox Add-ons (AMO).
- To load a zip instead, unzip the release from GitHub Releases. In Firefox, load it as a temporary add-on from about:debugging (it is removed when Firefox quits).
- To load the zip in Chrome or Edge instead, open chrome://extensions or edge://extensions, turn on Developer mode, and choose "Load unpacked" to select the unzipped folder (the label may differ by browser).
- In the extension's settings page, register your profile and addresses.
Install from the Chrome Web Store For Chrome
Install from Edge Add-ons For Edge
Install from Firefox Add-ons For Firefox
Send feedback
Feature requests, forms that did not fill correctly, and bug reports are welcome as GitHub issues. The buttons below open a ready-made form (a GitHub account is required).
Feature request
Tell us about a feature you would like, or something that is hard to use.
Issues are public. Do not include personal information such as your name, address or phone number.
License
JushoAI is open-source software released under the GNU General Public License v3.0 only (GPL-3.0-only). You may use, copy, modify and redistribute it free of charge. If you distribute a modified version, you must do so under the same GPLv3 terms and provide the source code.
FAQ
Does it work without AI?
Yes. Fields are classified by rules, and AI only helps with ambiguous ones. AI is off by default.
What gets sent outside?
Nothing, unless you configure AI. If you do, only field metadata is sent; your profile values and the values already in fields are not.
I'm worried about wrong entries.
You review everything in a preview before filling, and fields that already have a value are not overwritten.
Does it work on every form?
It handles common inputs (text, email, tel, and prefecture dropdowns). Fields it cannot classify are left alone.
Ollama returns 403.
Allow the extension's origin (chrome-extension:// followed by the extension ID) in Ollama's OLLAMA_ORIGINS setting.