Code SnapDev

Free Code Screenshot Tool - Transform code into beautiful Mac-style screenshots online with themes and syntax highlighting. Try it now!

💡 After exporting, please use Image Compression Tool to reduce image size by more than half with minimal quality loss

function helloWorld() {
  console.log("Welcome to Code Snap!");
  return true;
}

Usage Guide

1. Input Code

Paste or type the code snippet you want to capture in the code input box on the left. The text box supports multi-line input; keep your code formatting clean.

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Supported Languages: JavaScript, TypeScript, Python, Java, Go, Rust, C/C++, C#, PHP, Ruby, Swift, Kotlin, SQL, Bash, JSON, Markdown, CSS, HTML, and 20+ more
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Code Length: Recommend 10-30 lines per image for clarity
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Clean Formatting: Maintain proper indentation and line breaks for readability

2. Select Programming Language

Choose the corresponding programming language from the dropdown menu, and the system will automatically apply the appropriate syntax highlighting rules.

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Auto Highlighting: Powered by Prism.js engine for professional syntax highlighting
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Precise Recognition: Supports keywords, functions, strings, comments, and more for various languages
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Unsure of Language: Try different options to see the effect and choose the closest match

3. Adjust Appearance

Choose the appropriate theme and style settings based on your use case:

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Dark Theme: Tomorrow Night color scheme, ideal for social media and modern interfaces
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Light Theme: Suitable for printing and traditional documents with clear contrast
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Padding: Adjustable 0-96px (8px increments), 48-64px recommended for social sharing, 24-32px for document embedding
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Gradient Background: 5 carefully designed gradient schemes to enhance visual impact
All adjustments are previewed in real-time. Ensure satisfaction before exporting.

4. Export Image

Click the “Export as Image” button, and the system will automatically download the generated PNG format image (2x pixel ratio).

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High-Resolution Output: 2x pixel ratio ensures clear display on high-resolution screens
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File Format: PNG format with transparent background support and lossless compression
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File Name: Default is code-snap.png, can be renamed after download
The exported image may be large. We recommend using the Image Compression Tool to optimize it, significantly reducing file size while maintaining visual quality.

FAQ

Q: Why is the exported image file so large?

A: Code Snap exports high-resolution PNG format images (2x pixel ratio) to ensure clear display on high-definition screens. PNG is a lossless compression format with relatively large file sizes. We recommend using our Image Compression Tool for compression, which can reduce file size by 50-80% while maintaining visual quality.

Q: Which programming languages are supported?

A: Currently supports 20+ mainstream programming languages including JavaScript, TypeScript, JSX, TSX, Python, Java, Go, Rust, C, C++, C#, PHP, Ruby, Swift, Kotlin, SQL, Bash, JSON, Markdown, CSS, and HTML. If your needed language is not in the list, you can select a language with similar syntax as an alternative.

Q: Can I customize code highlighting colors?

A: The current version provides two preset color schemes: dark theme (Tomorrow Night) and light theme. These color schemes are carefully designed and suitable for most use cases. Future versions may add more theme options.

Q: Can exported images be used commercially?

A: Yes. Code screenshots generated using this tool are entirely yours and can be freely used in personal or commercial projects without attribution or payment. However, please note that the copyright of the code itself belongs to the code author.

Q: Why do some special characters display incorrectly?

A: This may be because the font does not support certain special characters or emoji. We recommend using standard ASCII characters and common Unicode characters. If special characters are necessary, try adjusting your browser's default font settings.

Q: Is my data safe?

A: Completely safe. All calculations are performed locally in your browser, data is never uploaded to servers, completely offline processing.

Use Cases

Technical Blog Illustrations

Add beautiful code example images to technical articles, enhancing professionalism and readability.

Recommended Configuration:
  • Use dark theme for modern technical blog style
  • Set 48-64px padding to make code window stand out
  • Choose appropriate gradient background to enhance visual appeal
  • Use image compression tool to optimize file size after export
Social Media Sharing

Share code snippets on Twitter, LinkedIn, Weibo, and other social platforms to attract attention and engagement.

Recommended Configuration:
  • Choose vibrant gradient backgrounds for visual impact
  • Keep code concise (10-20 lines) for quick reading
  • Use 64px padding to ensure good display on mobile devices
  • Add brief text explanation to help readers understand code purpose
Technical Documentation

Insert code screenshots in product documentation, API documentation, or technical specifications to make documents more intuitive.

Recommended Configuration:
  • Use light theme for printing and traditional documents
  • Set smaller padding (24-32px) to save space
  • Maintain consistent visual style with same theme and background
  • Compress images to improve document loading speed
Teaching Demonstrations

When creating programming tutorials, course materials, or training content, code screenshots make learning content clearer.

Recommended Configuration:
  • Choose appropriate theme based on teaching environment (dark for projection, light for printing)
  • Show only one concept per image to avoid information overload
  • Use comments and blank lines to improve code readability
  • Save common style settings to maintain consistent course material style
Presentation Creation

Insert high-quality code images in technical sharing sessions, product launches, or project reports.

Recommended Configuration:
  • Use dark theme for better projection effect
  • Set 48-64px padding to ensure clear visibility on large screens
  • Choose gradient background matching PPT theme
  • Export 2x resolution images for clear display on high-definition projectors

Best Practices

  • Keep code concise: 10-30 lines per image is optimal
  • Maintain visual consistency: Use consistent theme and background in the same project
  • Set reasonable padding: Choose appropriate padding based on use case
  • Compress image size: Use image compression tool to optimize file size
  • Add code explanations: Include text explanations in articles or documents to help readers understand

Discussion & Feedback

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