Online CMYK Color Checker for PDF
Instantly scan your PDF for unwanted RGB elements. Ensure your colors print exactly as designed.
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Why Use an Online PDF Preflight Checker?
🎨 CMYK Color Verification
Print production requires CMYK color space. Spot unwanted RGB elements before sending files to print to prevent muddy or unexpected color shifts.
📐 3mm Bleed Inspection
Ensure your artwork extends beyond the cutting trim line. Automatic bleed checks eliminate white paper borders after commercial trimming.
🔒 100% Client-Side Privacy
Your confidential client artwork is processed strictly inside your web browser. Files are never uploaded to cloud servers or stored anywhere.
Frequently Asked Questions
Is my PDF uploaded or stored on any server?
No. All PDF preflight checks run entirely inside your browser. Your files never touch our servers, guaranteeing complete confidentiality for sensitive graphic design artwork.
How do I know if my PDF is ready for commercial printing?
A print-ready PDF must use the CMYK color space, include at least 3mm bleed margins for edge-to-edge printing, have high-resolution images (300 DPI), and have all typography fully embedded or converted to outlines.
Why does RGB cause issues when printing?
Monitors create colors using light (RGB), whereas physical printing presses mix physical inks (CMYK). Vibrant neon RGB colors often look dull or discolored when printed without proper preflight conversion.