Ghost Trap for Windows

Ghost Trap — safe conversions for Windows

Ghost Trap is a free Windows utility that converts PostScript and PDF files from untrusted sources into image files. It wraps a modified distribution of the GNU Ghostscript PDL interpreter and runs the conversion inside Google Chrome’s sandbox, reducing the risk posed by potentially malicious documents.

Protection model

• The conversion engine is an adapted Ghostscript build that isolates document processing from the rest of the system.
• Processing runs inside Chrome’s sandboxing layer so exploits in the renderer or interpreter have a much smaller attack surface.
• Output is limited to images, which removes many of the risks associated with rendering active document content.

Who benefits most

• Users who routinely open or process documents from unknown or untrusted senders.
• Administrators who need a lightweight, command-line-friendly tool to sanitize files before further handling.
• Anyone who wants to reduce the chance that a malformed PDF or PostScript file can impact their system.

Primary advantages

• Stronger isolation than a direct Ghostscript run, giving better protection against malcrafted inputs.
• Simple, focused functionality — converts files to images without adding unnecessary features.
• Free to use on Windows and suitable for automation in scripts or batch jobs.

Alternatives to evaluate

• ImageMagick / MagickWand — powerful image conversion and manipulation tools that can convert PDFs to images (may require additional security precautions).
• SHAREit (free) — listed by some download sites as an alternative utility for moving or handling files across systems.
• poppler-utils (pdftoppm) — a lightweight command-line option for converting PDFs to raster images, often used on Unix-like systems.

Quick takeaway

Ghost Trap is a practical choice when you need a no-frills way to transform untrusted PostScript or PDF files into images while minimizing exposure to potentially harmful document contents.