Smart Fill: An AI Large Model-Powered Chrome Extension for Auto-Filling Web Forms

Smart Fill is an open-source browser extension developed with Vue 3 and Chrome Extension Manifest V3. It supports intelligent recognition and auto-filling of web forms using large models like OpenAI GPT-4o/Gemini, addressing the time-consuming and error-prone pain points of repetitive form filling. Key features include flexible multi-model switching, privacy-first local storage, a modular technical architecture, and it is open-sourced under the MIT license.

In daily internet usage, users fill out an average of 3-5 forms per week, accumulating over 30 minutes of time. Repetitive data entry is both time-consuming and error-prone. Traditional browser auto-fill struggles with forms of varying formats and diverse field names, while large models' natural language understanding capabilities can intelligently match fields with user intent, presenting an opportunity to solve this pain point.

1. Intelligent Field Detection: Scan web form elements via Content Script, understand field semantics, and identify identical fields with different names (e.g., both "fname" and "first-name" refer to first name);
2. Multi-Model Support: Design a flexible AI Provider interface supporting OpenAI (GPT-4o/GPT-4o Mini, etc.) and Google Gemini (1.5 Flash/Pro) series models, allowing users to switch freely;
3. Privacy-First Storage: All user data (API keys, personal profiles) is stored only in Chrome's local storage and sent to the user's chosen AI service provider only during filling, complying with security best practices.

Configuration Steps:

1. Select AI provider (OpenAI/Gemini);
2. Enter the corresponding platform's API key;
3. Choose model version;
4. Create a personal information profile. Daily Usage: Click 'Scan Page' to identify form fields, then click 'AI Auto-Fill' to complete filling. The extension uses highlight animations to feedback the filling status.

Applicable scenarios include e-commerce shopping (quickly filling in shipping addresses), job applications (one-click resume filling), account registration, online surveys, and enterprise services (batch filling of business forms). It can significantly improve efficiency for users who frequently fill in similar information (freelancers, e-commerce sellers, HR personnel).

Open-sourced under the MIT license, allowing free use, modification, and distribution. Open-sourcing promotes code quality improvement, provides developers with examples of modern browser extension development, and its 'AI-enhanced extension' model can be referenced in fields like intelligent translation and content summarization. As the cost of large models decreases, such tools will become more popular.

Smart Fill addresses real pain points with a practical approach, combining large model capabilities with the convenience of browser extensions to save time and protect privacy. Future features may include learning user habits, supporting complex conditional logic, and integrating other automation tools. It is recommended for users who need to improve browsing efficiency to try it.