I Ran Ghostscript Inside a Browser Tab to Build a Free PDF Compressor

📰 Dev.to · Pranav Mailarpawar

Learn how WebAssembly enabled running Ghostscript in a browser tab to create a free PDF compressor, promoting privacy and security

intermediate Published 24 Mar 2026
Action Steps
  1. Run Ghostscript using WebAssembly in a browser tab to test its functionality
  2. Configure the WebAssembly module to interact with browser storage for file input and output
  3. Build a user interface to upload PDF files and download compressed versions
  4. Test the PDF compressor tool with various file sizes and types to ensure its effectiveness
  5. Apply security measures to protect user data and prevent potential vulnerabilities
Who Needs to Know This

Developers and engineers working on web applications, especially those dealing with PDF files, can benefit from this approach to enhance user privacy and security. This technique can also be useful for teams focused on browser-based tools and extensions.

Key Insight

💡 WebAssembly can be used to run legacy software like Ghostscript in a browser, enabling the creation of privacy-focused web tools

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📄🔒 Run Ghostscript in a browser tab using WebAssembly to create a free, privacy-first PDF compressor! #WebAssembly #PDFcompression

Key Takeaways

Learn how WebAssembly enabled running Ghostscript in a browser tab to create a free PDF compressor, promoting privacy and security

Full Article

How WebAssembly turned a 50-year-old PDF compression engine into a privacy-first browser tool A few...
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