About GhostConverter

GhostConverter is a 100% client-side file converter that processes your files entirely in your browser using advanced WebAssembly technology. Your files never leave your device, making it the most private file converter available online.

Why We Built GhostConverter

Most online file converters require you to upload your files to their servers. This means your personal documents, photos, and videos are transmitted to strangers and stored on unknown infrastructure. We built GhostConverter to solve this fundamental privacy problem.

Every file you convert with GhostConverter stays on your device. The conversion happens locally in your browser using the same powerful technologies that power professional image editing software. No uploads, no waiting, no privacy concerns.

How It Works

GhostConverter uses WebAssembly (WASM) and modern browser APIs to perform file conversions directly on your device. When you select a file to convert:

  1. Your file is loaded into your browser's memory
  2. Our conversion engine processes the file using WebAssembly
  3. The converted file is generated locally
  4. You download the result directly to your device

This process is instant for most files, and your data never touches any server. It's the way file conversion should always work.

Supported Features

Image Conversions

  • • HEIC to JPG
  • • HEIC to PNG
  • • WebP to JPG
  • • WebP to PNG
  • • PNG to WebP
  • • JPG to WebP
  • • And more combinations

Privacy Features

  • • Zero server uploads
  • • No account required
  • • No data collection
  • • No tracking
  • • Works offline
  • • No file size limits

Technical Details

GhostConverter leverages cutting-edge web technologies to deliver fast, secure conversions:

  • WebAssembly (WASM): Our conversion engine runs at near-native speed in your browser
  • Canvas API: Image processing using the same technology as professional photo editors
  • File API: Direct access to your files without intermediate storage
  • Blob URLs: Efficient file handling that doesn't fill your browser cache

Use Cases

GhostConverter is perfect for a variety of needs:

  • iPhone Photos: Convert HEIC photos from your iPhone to JPG or PNG for broader compatibility
  • Web Optimization: Convert images to WebP for faster websites and better SEO
  • Legacy Formats: Update old image formats to modern standards
  • Social Media: Quickly convert images to the perfect format for your platform
  • Professional Work: Prepare images for print, web, or design projects

Contact Us

Have questions? Want to suggest a new feature? We'd love to hear from you.

Email: support@ghostconverter.app