Code Screenshot Generator

Create beautiful code screenshots for Twitter, LinkedIn, and blog posts. Privacy-first - your code never leaves your browser.

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function hello(name) {
  console.log(`Hello, ${name}!`);
  return true;
}

All Tools

Privacy-first developer utilities that run entirely in your browser

Diff Checker

Compare text and code differences side-by-side with syntax highlighting. Perfect for code reviews and file comparisons.

JSON Formatter

Format, validate, and beautify JSON data instantly. Minify or prettify with proper indentation.

Base64 Encoder

Encode and decode Base64 strings securely in your browser. No server uploads required.

UUID Generator

Generate UUID v4 identifiers instantly. Bulk generation supported for database seeding and testing.

Code Screenshot

Create beautiful code screenshots with syntax highlighting and customizable themes for documentation.

Package Size

Check npm package bundle sizes and analyze dependencies before adding them to your project.

Create Beautiful Code Screenshots in Seconds

Stop taking ugly screenshots of your code editor. Generate beautiful, professional-looking code images perfect for Twitter, LinkedIn, Medium, and documentation. Completely free and privacy-first - your code never leaves your browser.

Unlike other code screenshot tools, DiffZero processes everything locally using JavaScript. No uploads, no tracking, no data collection. Your proprietary code stays on your device.

Features

Syntax Highlighting

Support for 12+ languages including JavaScript, TypeScript, Python, Rust, Go, and more.

Beautiful Themes

Choose from popular themes: Dracula, Nord, GitHub Light, Monokai, and Ocean.

Customizable

Adjust padding, toggle window buttons, show/hide line numbers, perfect for your style.

High Quality Export

Export as 2x resolution PNG for crisp images on retina displays and social media.

Copy to Clipboard

One-click copy image directly to clipboard for instant pasting into tweets and posts.

100% Private

All processing happens in your browser. No servers, no uploads, no data collection.

Why Use a Privacy-First Code Screenshot Tool?

Popular code screenshot tools like Carbon.now.sh are great, but they upload your code to their servers for processing. If you're working with:

  • Proprietary company code
  • API keys or credentials (even in comments)
  • Unreleased features
  • Security-sensitive implementations

...you shouldn't risk uploading it to third-party services. DiffZero's code screenshot generator runs entirely in your browser using client-side JavaScript and Canvas APIs.

Perfect For

  • Twitter/X: Share code snippets in tweets with beautiful formatting
  • LinkedIn: Professional code examples for technical posts
  • Medium/Dev.to: Eye-catching code blocks for blog posts
  • Documentation: Clean code examples for READMEs and wikis
  • Presentations: High-quality code slides for talks and workshops
  • Portfolios: Showcase your code with style

How to Use

  1. Paste your code into the editor
  2. Select the programming language for proper syntax highlighting
  3. Choose a theme that matches your style
  4. Adjust padding and display options
  5. Click "Download PNG" or "Copy" to clipboard
  6. Share on social media or embed in documentation

How It Works

Our code screenshot generator uses:

  • Prism.js: Industry-standard syntax highlighting library
  • HTML Canvas API: Converts styled HTML to high-quality PNG images
  • Client-side processing: Everything runs in your browser via JavaScript

Privacy guarantee: Open Developer Tools (F12) → Network tab and watch - zero requests are made when you generate screenshots. Your code stays on your device.

Frequently Asked Questions

What languages are supported?

JavaScript, TypeScript, React (JSX/TSX), Python, Java, Go, Rust, CSS, JSON, Bash, and SQL. More languages coming soon!

Can I use this for commercial projects?

Yes! The tool is completely free for personal and commercial use. Generate unlimited screenshots.

Why is this better than Carbon.now.sh?

Carbon is excellent, but it uploads your code to their servers. If you're working with proprietary or sensitive code, DiffZero keeps everything private by processing locally in your browser.