When you’re prepping your artwork for large-format banner printing, you want to make sure your
file is set up correctly from the start. Doing so helps reduce reprints, delays, and quality issues.
Follow these eight steps for seamless file prep.
When you’re prepping your artwork for large-format banner printing, you want to make sure your file is set up correctly from the start. Doing so helps reduce reprints, delays, and quality issues. Follow these eight steps for seamless file prep.
Step One: Final Size, Bleed, and Safe Area
Build your file at the final trim size whenever possible. This helps you visualize how all elements will come together.
After setting the final trim size, add 0.5” bleed on all sides for hemmed (folded and stitched) banners.
Keep all critical text and logos at least 2” inside the trim to avoid accidental trimming. Also account for grommet margins — typically 1 inch from the banner edge.
Step Two: Resolution and Scaling
Use 150 DPI at the final size for most large-format banners. Setting the correct DPI helps prevent pixelation and keeps files manageable.
If you’re designing at a scale (e.g., 1:10), adjust your resolution accordingly to avoid upscaling low-resolution images.
For example, if your working size is 10″ × 36″ and you plan to enlarge it, ensure your images are high enough resolution to remain sharp once scaled.
Step Three: Colour Mode and Profiles
Choose CMYK, not RGB.
CMYK is used for print production, while RGB is used for screens. If you design in RGB, colours may shift when converted—blues often shift toward purple.
Programs like Word work in RGB only, so files created there frequently convert unpredictably when printed.
Step Four: Fonts and Vector Elements
If you’re working in Adobe Illustrator, outline all fonts before exporting. Keep logos and text as vector elements whenever possible.
Avoid rasterized text for anything under 1 foot tall, as it may pixelate when printed.
Step Five: File Types and Export Settings
Once your project is complete, export using the correct file type:
- PDF – Preferred for most print workflows. Universal and easy to view.
- AI – Illustrator file format, editable only in Adobe Illustrator or compatible software.
- TIFF – Large, high-resolution raster format typically used for image-heavy banners.
Before exporting, flatten transparencies and avoid embedded editable effects. Compress layers to reduce file size and prevent processing errors.
Step Six: Image and Background Handling
Bleed is essential. A typical wide-format bleed is ½ inch.
Extend backgrounds, images, and colours fully into the bleed area.
Check for unwanted transparency or clipping masks that may cause issues in production. Avoid white borders unless they are an intentional design choice.
Step Seven: Finishing and Hardware Awareness
Consider finishing needs during your design.
Be mindful of grommet placement and avoid placing text or critical elements within 2 inches
of edges where hems or hardware may interfere.
This prevents accidental cutting and ensures your banner displays correctly.
Step Eight: Preflight Checklist
Before sending your file to production, complete a final preflight check to confirm:
- Final size is correct
- Bleed is included
- CMYK is used
- Fonts are outlined
- Images are at proper resolution
- No missing links
- File is exported as PDF (recommended)
Common Errors to Watch Out For
Avoid these frequent issues:
- RGB colours (causing colour shifts)
- Low-resolution photos or logos
- Missing or incorrect bleeds
- Live fonts (leading to font substitution)
- Important content too close to hem or grommet areas
Double-check your setup to make sure your banner prints clean, sharp, and accurate.
Looking for Professional Help?
If you want your banner artwork checked before printing, contact Grafix Media at (587) 329-4304 or estimator@grafix-media.ca . We’re here to help you get print-ready with confidence.