PDF Optimizer

https://my-pdf-squeezer.web.app/

Client-side PDF compression powered by Ghostscript 10.06.0 compiled to WebAssembly. Everything runs entirely in the browser — no files are uploaded or stored on any server.

Features

• 100% client-side — your files never leave your browser
• Ghostscript WASM — real PDF compression using @okathira/ghostpdl-wasm
• Web Worker — compression runs off the main thread, keeping the UI responsive
• PDF preview — view the original and compressed PDF side by side
• Multiple quality levels — Screen (72 dpi), Ebook (150 dpi), Printer (300 dpi), Prepress (300 dpi max)

Tech Stack

• Vue 3 + TypeScript
• Vite
• Tailwind CSS v4
• pdf.js for PDF preview
• Ghostscript 10.06.0 (WASM)

Getting Started

# Install dependencies
bun install

# Start dev server
bun run dev

# Build for production
bun run build

# Preview production build
bun run preview

How It Works

1. User uploads a PDF file via drag-and-drop or file picker
2. The PDF is written to Ghostscript's virtual filesystem inside a Web Worker
3. Ghostscript re-encodes the PDF at the selected quality/DPI setting
4. The compressed PDF is read back and presented for download

License

AGPL-3.0 (due to Ghostscript's license)