JP Zip Autofill Assistant

Japanese postal code based address autofill with generic heuristics and editable site templates.

JP Zip Autofill Assistant is a Chrome extension designed to streamline address input workflows in Japanese web forms. When a 7-digit postal code is entered, the extension automatically retrieves the corresponding address and fills in prefecture, city, and town fields. Key Features: - Automatic address autofill based on Japanese postal codes - Works on generic forms using smart DOM heuristics - Supports customizable site-specific templates for systems like Salesforce, kintone, and internal web apps - Built-in search tool for postal codes and addresses - Favorite locations and search history - CSV export of search results - Custom dictionary for frequently used addresses The extension operates entirely within the browser and does not transmit user data externally except for API requests required for address lookup. External APIs used: - https://zipcloud.ibsnet.co.jp (postal code → address) - https://postcode.teraren.com (address → postal code) This extension is ideal for business users who frequently input Japanese addresses and need efficiency across multiple web systems.