Web-based Word-like rich text editor in one HTML file

A Chinese prompt for Gemini-3.0-Pro to build a Word-style rich text editor as a single HTML file, including major formatting features and a download option.

Prompt
Help me write a web-based rich text editor similar to Word, including its main features, with all code contained in a single HTML file. It should support: headings, paragraphs, left alignment, bold, italic, right alignment, underline, strikethrough, background color, text color, numbering, undo, and finally a download function. Directly generate the HTML, and that’s it!

How to use this prompt

  1. 1

    Copy the full prompt above.

  2. 2

    Open a platform that supports Gemini 3 Pro, such as YouMind, and paste the prompt in.

  3. 3

    Swap the subject, style, or details to fit your idea, then generate.

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