Claude.ai Better Prompt Editor by seb

Claude.ai Better Prompt Editor

Note: This project was entirely coded with Claude Code, Anthropic's official CLI assistant.

A Firefox extension that adds a multiline Markdown editor dialog to Claude.ai for crafting complex prompts with ease.

✨ Features

✏️ Dialog-Based Editor
- Adds an editor button (✏️) next to Claude.ai's send button
- Opens a full-featured Markdown editor in a dialog
- Preserves Claude.ai's original editor functionality

🖊️ Multiline Editor with Markdown Support
- Large textarea with natural Enter key behavior for newlines
- Markdown formatting toolbar with 9 quick-access buttons
- Keyboard shortcuts for common Markdown formatting

⌨️ Smart Keyboard Controls
- Enter → New line (inside dialog)
- Ctrl+Enter → Insert content and close dialog
- Escape → Close dialog without inserting
- Click outside → Close dialog without inserting

🎨 Markdown Toolbar
Quick-access buttons for Markdown formatting:
- Bold (Ctrl+B) → **text**
- Italic (Ctrl+I) → *text*
- Inline Code (Ctrl+E) → `code`
- Code Blocks (Ctrl+Shift+C) → ```code```
- Headings → ## Heading
- Bullet Lists → - item
- Numbered Lists → 1. item
- Quotes → > quote
- Links (Ctrl+K) → [text](url)

See https://github.com/essembeh/claudeweb-better-prompt-editor