Markdown Bold Syntax

Learn how to create bold text using ** or __ symbols

Quick Reference

Syntax Options

**bold text**
__bold text__

Result

bold text

Basic Bold Usage

Bold text in Markdown can be created using either double asterisks (**) or double underscores (__) around the text you want to make bold.

Using Double Asterisks (**)

Markdown:

This is **bold text** in a sentence. Here we have **another bold phrase** for emphasis. The word **important** stands out in this text.

Output:

This is bold text in a sentence.

Here we have another bold phrase for emphasis.

The word important stands out in this text.

Using Double Underscores (__)

Markdown:

This is __bold text__ using underscores. The __critical point__ needs to be highlighted. Use __strong emphasis__ to draw attention.

Output:

This is bold text using underscores.

The critical point needs to be highlighted.

Use strong emphasis to draw attention.

Advanced Bold Techniques

Bold in Different Contexts

Markdown:

# Header with **bold** text> Blockquote with __strong__ emphasis - List item with **bold word** - Another item with __bold phrase__ Here's a [link with **bold** text](https://example.com)

Output:

Header with bold text

Blockquote with strong emphasis
  • List item with bold word
  • Another item with bold phrase

Here's a link with bold text

Combining Bold with Other Formatting

Markdown:

This is ***bold and italic*** text. This is **bold with *italic* inside**. This is **bold with `code` inside**. This is __bold with [link](https://example.com) inside__.

Output:

This is bold and italic text.

This is bold with italic inside.

This is bold with code inside.

This is bold with link inside.

Mid-word Bold (Use with Caution)

Markdown:

The word un**believe**able uses mid-word bold. This is fan**tas**tic formatting. Some**times** this technique is useful.

Output:

The word unbelieveable uses mid-word bold.

This is fantastic formatting.

Sometimes this technique is useful.

Asterisks vs Underscores

When to Use Double Asterisks (**)

Best for:

  • • General bold text
  • • Most common choice
  • • Consistent with italic (*)
  • • Mid-word emphasis

Example:

This is **really** important. The word super**star** performance.

When to Use Double Underscores (__)

Best for:

  • • When text contains asterisks
  • • Alternative style choice
  • • Headers and titles
  • • Consistent with italic (_)

Example:

__Important Note:__ Read carefully. Use __UPPERCASE__ for emphasis.

Best Practices

✅ Best Practices

  • Be consistent: Choose either ** or __ and stick to it throughout your document
  • Use for importance: Bold should indicate importance, not just visual appeal
  • Don't overuse: Too much bold text loses its impact
  • Consider hierarchy: Use bold for headings, key terms, and important points
  • Maintain readability: Ensure bold text doesn't overwhelm the content

❌ Common Mistakes

  • Mixing markers: Using both ** and __ randomly in the same document
  • Spaces around markers: Using "** bold **" instead of "**bold**"
  • Single markers: Using "*bold*" instead of "**bold**"
  • Overemphasis: Making too much text bold
  • Wrong semantic use: Using bold for code or technical terms

Common Issues and Solutions

❌ Problem: Single vs Double Markers

Wrong (creates italic):

This is *not bold* text. This is _also not bold_ text.

Correct (creates bold):

This is **bold** text. This is __also bold__ text.

Use double markers (**) or (__) for bold, single markers for italic.

❌ Problem: Spaces Around Markers

Wrong:

This is ** not bold ** text. This is __ also not bold __ text.

Correct:

This is **bold** text. This is __also bold__ text.

Don't add spaces between the markers and the text.

❌ Problem: Unmatched Markers

Wrong:

This is **missing closing marker text. This is __mixed markers** text.

Correct:

This is **properly closed** text. This is __consistently marked__ text.

Always use matching opening and closing markers of the same type.

Try Bold Text Yourself!

Practice bold syntax with our free online converter.

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