Stop wasting hours
on manual prepress.
PDFlow automates preflight, color correction, bleed generation, dieline processing, and image upscaling — delivering print-ready PDF/X-4 files in seconds, not hours. Self-hosted on your infrastructure, with zero vendor lock-in.
14-day free trial · No credit card required · Self-hosted
PDF/X-4 Compliant · ISO 19593 · Fogra39 Certified · GPU Accelerated

Six tools that replace hours of manual work.
Each tool was built from a decade of real-world print production experience. Together, they handle 90% of prepress tasks your team does by hand today.
Automated Preflight
Catches resolution, color space, font, bleed, and margin issues before they reach the press. Reports rival callas pdfToolbox — at a fraction of the cost.
Rich Black Correction
Detects and fixes improperly defined black (K-only) text, converting it to proper rich black (C30 M30 Y30 K100). No more washed-out headlines.
Dieline & Cut Contour Processing
Automatically detects punch holes, generates OCG layers with spot colors, and exports Illustrator-compatible files. No more manual layer setup.
Intelligent Bleed Generation
Adds 3mm bleeds using content-aware mirror or stretch algorithms. Handles edge cases that trip up basic tools.
ICC Color Conversion
Converts RGB to CMYK using industry-standard ICC profiles — Fogra39, GRACoL, SWOP — matched to your specific press and substrate.
AI-Powered Image Upscaling
Low-res client files? Real-ESRGAN upscales images up to 4× without artifacts. Runs on your GPU — no cloud dependency, no per-image fees.
From upload to press-ready in three steps.
- 01
Deploy in Minutes
Single Docker command installs PDFlow on any Linux or Windows server. Your files never leave your network. Full data sovereignty.
- 02
Upload & Automate
Drop PDFs into the web portal. PDFlow runs a full prepress pipeline — preflight, corrections, conversions — all without human intervention.
- 03
Download Print-Ready Files
Get compliant PDF/X-4 output with every correction applied. Share via the portal, download locally, or push to your RIP workflow.
Your team is spending 40+ hours per month on tasks PDFlow automates.
The average 5-person prepress team saves 8 hours per week after switching to PDFlow. Start your free trial and see the difference in your first file.