How to Prepare Artwork for Printing: Bleed, Trim, CMYK & Resolution

Body copy

Most printing delays and quality issues trace back to one thing: artwork that is not print-ready. A file that looks perfect on screen can produce a blurry, misaligned or colour-shifted print.

This guide covers everything you need to know to prepare artwork that prints correctly the first time.

Bleed

Bleed is the area of your design that extends beyond the final trim size. It ensures that when the printed piece is cut, there are no white edges.

Standard bleed: 3 mm on all sides Why it matters: Cutting is never perfectly precise. Without bleed, a slight shift in the cutting position leaves a white edge on your finished piece.

How to set it up: In your design software, extend the background colour or image 3 mm beyond the trim size on all sides. Most design software has a bleed setting in the document setup.

Trim size

Trim size is the final size of your printed piece after cutting. It is the size you see when you hold the finished product.

Common trim sizes: - Business card: 90 × 54 mm (standard Kenyan size) - A4: 210 × 297 mm - A5: 148 × 210 mm - A3: 297 × 420 mm - DL: 99 × 210 mm

Why it matters: Your design should be set to the trim size plus bleed. A business card design should be 96 × 60 mm (90 × 54 mm plus 3 mm bleed on each side).

Safe zone

The safe zone is the area inside the trim size where all important content should be placed. Anything outside the safe zone risks being cut off.

Standard safe zone: 5 mm inside the trim size Why it matters: Text, logos and important design elements should be at least 5 mm inside the trim line. Anything closer may be cut off or too close to the edge.

CMYK vs RGB

This is the most common cause of colour disappointment in printing.

RGB (Red, Green, Blue) is the colour mode used by screens. It can display millions of colours but cannot be reproduced by a printing press.

CMYK (Cyan, Magenta, Yellow, Key/Black) is the colour mode used by printing presses. It has a smaller colour gamut than RGB.

The problem: If you supply an RGB file, the printer converts it to CMYK. This conversion can shift colours significantly — bright blues become dull, vibrant oranges become brown.

The solution: Design in CMYK from the start. Set your document colour mode to CMYK before you begin designing. This ensures that what you see on screen is close to what you will get in print.

Resolution

Resolution is the number of dots per inch (DPI) in your image. Low-resolution images look pixelated and blurry when printed.

Standard resolution for print: 300 DPI at the final trim size Why it matters: A 72 DPI image (standard for web) will look blurry when printed. A 300 DPI image will look sharp and professional.

How to check: In your design software, check the image resolution. If it is below 300 DPI at the final trim size, you need a higher-resolution image.

File format

Preferred format: PDF (Portable Document Format) Why: PDF preserves fonts, images and layout exactly as designed. It is the universal standard for print.

Also accepted: AI (Adobe Illustrator), PSD (Adobe Photoshop), INDD (InDesign) When to use these: When the printer needs to make adjustments to the design. Always supply a PDF alongside the native file.

Fonts: Outline all fonts (convert to curves/paths) or supply the font files. If fonts are not outlined, the printer may not have the same font and will substitute it, changing the layout.

Checklist: is your file print-ready?

• [ ] Document size is trim size plus 3 mm bleed on all sides
• [ ] All important content is at least 5 mm inside the trim line
• [ ] Colour mode is CMYK, not RGB
• [ ] All images are at least 300 DPI at the final trim size
• [ ] All fonts are outlined or font files are supplied
• [ ] File is saved as PDF (or AI/PSD with accompanying PDF)
• [ ] No low-resolution images from the internet
• [ ] No RGB colour swatches

Frequently asked questions

What happens if I do not include bleed? Your printed piece may have white edges if the cutting position shifts even slightly. Most printers will add bleed automatically, but this can crop your design.

Can I supply an RGB file? You can, but colours will shift when converted to CMYK. Design in CMYK from the start for accurate colour.

What resolution should my images be? 300 DPI at the final trim size. For a business card, this means your image should be at least 1,063 × 638 pixels.

What file format should I supply? PDF is the preferred format. AI and PSD are also accepted if the printer needs to make adjustments.

How do I outline fonts? In Adobe Illustrator, select all text and go to Type > Create Outlines. In Adobe InDesign, go to Type > Create Outlines. In Canva, download as PDF with fonts embedded.

Structured data to include

{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "How to Prepare Artwork for Printing: Bleed, Trim, CMYK & Resolution",
  "author": { "@type": "Organization", "name": "DS CREATIONS" }
}

Notes for the content team

• Include a visual diagram showing bleed, trim and safe zone.
• Link to related services: business cards, flyers, brochures, posters.
• Offer a "free artwork check" CTA — it is a low-friction way to capture leads.