Prepress Checklist for Designers: Avoid the 10 Most Common Mistakes

September 1, 2025 · 7 blog.minutes

You’ve finished your stunning label design and it looks flawless on screen. The colors are vibrant, the typography is on point, and the brand identity shines through. But will this digital masterpiece have the same impact when it comes off the press? The answer lies in the crucial bridge between design and production: the prepress stage.

Prepress checklist: bleed, CMYK, 300 DPI, outline, rich black, safe zone, spot color, die line, overprint, PDF/X-4.

Poor preparation can lead to costly issues: faded colors, unreadable text, and cutting errors. That’s why you should always double-check these 10 steps before sending files to print.

1) Not Adding Bleed

Why? Even slight cutting shifts create white edges. Solution: Add at least 3 mm bleed on all sides.

2) Wrong Color Mode (RGB → CMYK)

Why? RGB on screen is different from CMYK in print. Solution: Start your project in CMYK from the beginning.

3) Low-Resolution Images

Solution: Photos should be 300 DPI; logos/illustrations should be vector (.ai/.eps/.svg).

4) Not Outlining Fonts

Solution: Convert all text to outlines.

5) Not Using Rich Black

Solution: For large black areas, use e.g. C40 M30 Y30 K100.

6) Ignoring the Safe Zone

Solution: Keep important elements at least 3–4 mm inside the cutting area.

7) Incorrect Spot (Pantone) Color Setup

Solution: Define Pantone colors as Spot Colors.

8) Not Separating Die Line

Solution: Place the die line on a separate layer/spot color with overprint enabled.

9) Overlooking Overprint Settings

Solution: Check overprint for small black text.

10) Wrong File Format

Solution: Save print files as PDF/X-1a or PDF/X-4.

Conclusion

These technical steps aren’t here to limit your creativity, but to make sure your vision prints exactly as intended. Get in touch with our prepress team and let’s check your file together.