Create Beautiful Code Blocks Instantly - Free Online Tool

🎨 Create Beautiful Code Blocks Instantly

Transform your plain code into stunning, professional-looking code blocks with custom styling, descriptions, and one-click copy functionality.

Whether you're a blogger, developer, or educator, presenting code in a visually appealing way is crucial for engaging your audience. Our free online tool makes it incredibly easy to create beautiful, professional code blocks with custom styling options.

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Custom Styling

Choose from multiple colors, font sizes, and alignment options to match your brand or preference.

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Add Descriptions

Include custom titles and descriptions to provide context for your code snippets.

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Height Control

Set auto height or customize the exact height for long code blocks with scroll functionality.

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One-Click Copy

Every generated code block includes a copy button for easy code sharing and usage.

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Instant Generation

Get clean, ready-to-use HTML code instantly. No registration or downloads required.

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Mobile Friendly

Generated code blocks are fully responsive and work perfectly on all devices.

🔧 How It Handles HTML Code Safely

The Problem with Displaying HTML

When you try to display HTML code on a webpage, the browser interprets it as actual HTML elements instead of showing it as text. For example, if you write <div>Hello</div> in your HTML, the browser creates an actual div element rather than displaying the code.

Our Solution: HTML Entity Encoding

This tool uses HTML entity encoding to solve this problem. It converts special HTML characters into their safe equivalents:

            • < becomes &lt;

            • > becomes &gt;

            • & becomes &amp;

            • " becomes &quot;

            • ' becomes &#039;

This way, when you input HTML code like <div class="example">Hello</div>, the tool converts it to safe text that displays perfectly without being executed by the browser.

💡 Pro Tip: This is the same technique used by GitHub, Stack Overflow, and other major platforms to display code safely!

Solving the Multiple Code Blocks Problem

Another technical challenge: What happens when you have multiple code blocks on the same page? Traditional solutions often fail because:

⚠️ The Problem: If multiple code blocks use the same ID (like "code-block"), the copy button only works for the first one. HTML IDs must be unique on a page!

Our Solution: Each generated code block gets a unique identifier using timestamps and random strings:

            const uniqueId = 'code_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9);

            // Example result: "code_1640995200123_k3x7m9p2q"

This ensures every code block on your page has its own copy button that works perfectly, even with dozens of code blocks!

✅ Result: You can safely use multiple code blocks on the same page without any conflicts or broken copy functionality.

📚 How to Use This Tool

Add a Title (Optional)

Enter a descriptive title for your code block. You can customize its color, size, and alignment using the styling options below.

Customize Title Appearance

Choose from three colors (Black, Blue, Red), three font sizes (Small, Medium, Large), and three alignment options (Left, Center, Right).

Set Code Block Height

Select from preset heights (Auto, 200px, 400px, 600px) or use the slider to set a custom height between 100px and 800px.

Add a Description (Optional)

Provide additional context or explanation for your code. The description always appears in black text for consistency.

Paste Your Code

Copy and paste your code into the text area. The tool preserves all formatting and indentation.

Generate HTML

Click "Generate Code Block" to create your styled HTML. The generated code includes all styling and a built-in copy button.

Copy and Use

Click "Copy Generated HTML" to copy the complete code to your clipboard, then paste it into your website, blog, or documentation.

🚀 Try the Tool Below

Start creating beautiful code blocks right now! The tool is fully functional and ready to use.

Instant Pretty Code Blocks

Title (with custom styling):

Title Color

Title Font Size

Title Alignment

Code Block Height

Custom Height: 300px

Description (always black):

Preview:

Your title will appear here

Your description will appear here

Enter or Paste Your Code:

HTML copied to clipboard!