Code Screenshot Generator Tool - Beautiful Code to Image Converter with Syntax Highlighting

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This tool generates beautiful, syntax-highlighted code screenshots directly in your browser. Unlike server-based alternatives, your code never leaves your device. Choose from 12 professionally crafted editor themes, customize backgrounds with gradient presets, and export high-resolution PNG images perfect for social media posts, presentations, and documentation. Images are rendered using the native Canvas API for pixel-perfect quality.

All processing is performed entirely in your browser using client-side JavaScript. No data is transmitted to any server. Your code never leaves your device.

  • This tool is provided "AS IS" without any warranties of any kind.
  • The author accepts no responsibility for any issues arising from the use of this tool.
  • Font rendering in the exported image may vary depending on your operating system and installed fonts.
  • By using this tool, you accept full responsibility for any outcomes.

This tool uses client-side JavaScript for all processing. No data is transmitted to servers, no files are uploaded online, all processing happens locally in your browser. Once loaded, this tool continues to work even without an internet connection. For more details, please refer to our Web Tools Disclaimer.

Appearance Settings

14px
1.5
32px
12px

Live Preview

Visual preview of the code screenshot with the current theme and settings applied. The actual code content is available in the code input area above.

Features

  • 12 Professional Themes — Monokai Pro, Dracula, GitHub Dark/Light, Nord, One Dark Pro, Solarized Dark/Light, Tokyo Night, Catppuccin Mocha, and 2 exclusive originals (Midnight Aurora, Sunset Ember)
  • Beautiful Gradient Backgrounds — 12 curated gradient presets plus solid color and transparent options
  • Window Frame Styles — macOS, Windows, Linux, or no frame with optional window title
  • Pure Canvas Rendering — Native Canvas API for pixel-perfect, high-quality image output without DOM-to-image conversion
  • High-DPI Export — 1x, 2x, 3x, or 4x scale factor for crisp images on Retina and high-resolution displays
  • Copy Image to Clipboard — Paste screenshots directly into Slack, Twitter, Discord, or any application
  • Line Numbers and Highlighting — Show line numbers and highlight specific lines to draw attention to key code
  • Auto Language Detection — 30+ programming languages supported with automatic detection via highlight.js
  • Fully Client-Side — No server communication; your code never leaves your browser. Works offline after loading
  • Custom Watermark — Add your own text watermark to generated screenshots
  • Real-Time Preview — All settings changes are reflected instantly in the live preview

How to Use

  1. Paste or type your code in the input area above.
  2. Select the programming language, or leave it on "Auto Detect."
  3. Choose an editor theme and background gradient from the dropdowns.
  4. Customize window style, font size, padding, border radius, and other settings as desired.
  5. The live preview below updates in real time as you make changes.
  6. Click Export PNG to download the image, or Copy Image to Clipboard to paste it directly into other applications.
  7. Use Highlight Lines (e.g., "1,3-5,8") to emphasize specific lines of code.
  8. For presentations or Retina displays, set Export Scale to 2x or 3x for higher resolution output.

Important Notes

  • All processing is performed entirely in your browser using client-side JavaScript and the Canvas API.
  • Font rendering in the exported image depends on your operating system and installed monospace fonts. Results may vary across devices.
  • The "Copy Image to Clipboard" feature requires browser support for the Clipboard API (supported in Chrome, Edge, and recent Firefox).
  • For best quality, use 2x or 3x scale when creating images for Retina/high-DPI displays.
  • Very long lines of code may extend beyond the visible area. Consider using shorter lines for optimal screenshot layout.

Third-Party Libraries:


References:
Tech Blog with curated related content
Web Tools Collection

Written by Hidekazu Konishi