A (short for printer or print ) file is a generic print‑output file that contains raw data destined for a printer. When a program sends a document to a printer, it often writes the data to a .PRN file first. The file stores exactly what the printer receives—including page layout, fonts, graphics, and printer‑specific control codes (often in PostScript , PCL , ESC/P , or other printer languages).
| Risk | Description | Mitigation | |------|-------------|------------| | | Some printers support embedded PostScript or PCL that can execute scripts (e.g., exec in PostScript). | Scan PRNs with an antivirus that recognizes printer‑language threats; open only in a sandboxed viewer. | | Data Leakage | PRNs may contain confidential information (e.g., invoices) in clear text. | Treat PRNs as sensitive documents ; apply encryption or access controls when stored. | | Denial‑of‑Service (DoS) | Malformed PRNs can cause printers to lock up or crash. | Validate PRN files before sending them to production printers. | | Phishing via Fake PRNs | Attackers may attach a PRN named “invoice.prn” that, when printed, prints malicious code. | Educate users to verify the source and open PRNs only with trusted software. | sxy.prn
If pcl6 isn’t available, you can use the hp2xx utility: A (short for printer or print ) file
The prefix is not a standardized part of the .PRN specification . It is usually a user‑chosen identifier that conveys some meaning to the creator of the file. Common reasons for the “sxy” prefix include: | Treat PRNs as sensitive documents ; apply
# Convert via Ghostscript to a high‑resolution PNG gs -dNOPAUSE -dBATCH -sDEVICE=png16m -r300 -sOutputFile=sxy-%03d.png sxy.prn