Highlight By Line

Highlight By Line is an Obsidian plugin that lets you easily highlight individual lines in your notes using a simple %hl-color% marker syntax.
It brings intuitive, colorful highlighting to both Reading and Live Preview modes—with a beautiful palette and instant visual feedback.

✨ Features

• Highlight any line with a color using %hl-yellow%, %hl-blue%, etc.
• Works in both Reading & Live Preview:
  • In Reading mode, the entire line is softly highlighted (pastel color).
  • In Live Preview, the marker turns into a vivid colored pill at the end of the line.
• Quick color picker:
  Click a line number to instantly pick a highlight color from the palette.
• Supports all basic Obsidian blocks (paragraphs, headings, blockquotes, etc).
• Easy to use, readable in plain Markdown.

🌈 Screenshots

Color Palette in Live Preview

Highlighted Lines in Reading Mode

📝 Usage

1. Highlight a line manually:
   Add %hl-yellow%, %hl-blue%, %hl-red%, etc. at the end of any line.

   This is a normal line.
   This is important! %hl-yellow%
   

2. Highlight with the palette:

   • In Live Preview, click any line number on the left.
   • Choose a color from the palette to highlight that line, or click the minus (–) to clear the highlight.

3. See it in action:

   • Reading mode: The entire line is softly highlighted.

🚦 Supported Colors

• Yellow
• Red
• Pink
• Green
• Blue
• Purple
• Gray

🗒 TODO

• Highlight in Lists:
  Highlight sometimes does not apply to lines inside certain Markdown lists.
  (Planned to be fixed in a future update!)
• Customization:
  Custom highlight colors and palette are planned.
• Better rendering of %hl-color% as color pill in Live Preview:
  (Improved support coming soon)

🛠️ Contributing

Pull requests and suggestions are welcome!

📜 License

0BSD license

🙏 Credits

Inspired by the Obsidian community and built with the official plugin template.