Preparing Files for Colour Printing

Colour accuracy is essential for ensuring your printed books look vibrant and true to your vision. Here’s how to prepare your files for colour printing:

1. Use CMYK Color Mode

Most digital screens display colors in RGB (Red, Green, Blue), but printers use CMYK (Cyan, Magenta, Yellow, Black). To avoid unexpected color shifts:

  • Convert your files to CMYK before uploading.
  • Use our preferred CMYK profile: GRACoL2006_Coated1v2 .
2. Check Color Consistency
  • Ensure all images and graphics are in CMYK format.
  • Use Pantone or spot colors sparingly, as they may not translate accurately to CMYK.
3. Proof Your Colors

Download a proof from our system to preview how your colors will appear in print. This step is crucial for identifying any discrepancies before production.

4. Avoid Over-Saturated Colors

Extremely bright or saturated colors may not reproduce well in print. Stick to realistic color values for the best results.

By following these steps, you’ll achieve consistent and professional color reproduction in your printed books. For more tips, visit our CMYK vs RGB Support Page .

Bleed refers to the extra space added around the edges of your design to ensure no unprinted borders appear when your materials are trimmed to size. This area is highlighted by a blue line in the file upload section. Most projects require a 3mm bleed, but hardcover books need a larger bleed of 20mm on all sides, including the spine. If you’re unsure how to add bleed, our team can assist you or guide you through the process.

The trim line represents the final size of your printed piece and shows where the cutting will occur. It’s marked by a green line in the artwork preview. Keep in mind that this guideline won’t appear on the final product. For more details, visit our Bleed Support Page.

The hinge area refers to the sections on either side of the spine in bound items. These areas allow the book to open smoothly without damaging the spine. Properly accounting for the hinge area ensures durability and flexibility in your finished product.

You can review your order using these methods:

  • Artwork Thumbnails: Check the sequence, layout, and positioning of your pages in the thumbnails provided.
  • Downloadable Proof : Download a proof to identify any hidden issues that might not be visible in the preview. We strongly recommend reviewing this proof carefully before approving your order.

Before uploading your files, ensure the following:

  • All required pages are present and in the correct order.
  • Text is thoroughly proofread and free of spelling errors. Images have a resolution of at least 300 DPI.
  • Fonts are embedded or converted to outlines to prevent formatting issues.
  • Content stays within quiet areas and gutter margins for bound items.

Please note that we do not check for design, content, or copyright issues.You are responsible for ensuring you have the rights to all materials used in your project.

You can use any font you prefer, but make sure to embed it into your files. Alternatively, convert fonts to outlines or shapes to preserve their clarity. Once converted, fonts cannot be edited, so save a backup copy of your file beforehand. For free fonts, ensure they are licensed for commercial use if you plan to sell your printed materials.

We recommend high-quality PDF files for optimal results, but we also accept various other formats. Files can be submitted as single-page or double-page spreads. For detailed guidance, visit our File Submission Support Page .

Here’s an overview of the binding options we offer:

  • Saddle Stitch (Staple Binding): Ideal for low-page-count projects like magazines, secured with metal staples.
  • Perfect Binding: Uses adhesive to bind pages securely, creating a flat spine.
  • PUR Binding: Similar to perfect binding but uses a stronger adhesive for increased durability.
  • Wiro Binding: Features a spiral coil that allows pages to rotate 360 degrees and lie flat.
  • Hardcover Binding: Provides a sturdy, non-flexible cover supported by heavy-duty boards.
  • Layflat Binding: Ensures seamless double-page spreads and allows every page to lie flat when opened. For more information, visit our Binding Support Page .

Design your files in CMYK (Cyan, Magenta, Yellow, Black) mode and use our preferred color profile: GRACoL2006_Coated1v2. Full-color printing combines CMYK inks to create vibrant images. Note that colors may appear differently on screen (RGB) compared to print. If you’re unsure how to convert RGB to CMYK, our system can handle this automatically during upload.

Select the greyscale option in theQuote Calculator and ensure your files are set to a resolution of 300 DPI.

Use our recommended color profile: Dot Gain 15%. For deep black tones, refer to our Standard Black vs Rich Black Guide .

Resolution measures the detail in an image. For sharp prints, images should have a resolution of at least 300 DPI. Lower resolutions may result in pixelation. Learn more about image resolution on our Support Page .

Yes, you can unconfirm your order to edit your files or adjust specifications. However, this will delay production, and we’ll provide a revised delivery date. Once an order enters production, changes are no longer possible.

Yes! Select the “Custom Size” option in the Quote Calculator and enter your desired dimensions. Keep in mind that sizes must align with the printing press plates used during production.

Spot UV applies a glossy coating to specific areas, while foiling creates a metallic effect. To include these finishes:

  • Add the desired finish in the Quote Calculator.
  • Upload a separate file indicating where the finish should be applied.
  • Follow the instructions on our Spot UV and Foiling Support Pages .

Your choice depends on your project’s purpose and design. Here’s a quick overview:

  • Half Fold: Simple and effective for basic projects.
  • Roll Fold: Great for organizing large amounts of text or graphics.
  • Z-Fold: Perfect for dividing content into equal panels.
  • Gate Fold: Ideal for promotional materials with impactful visuals.
  • Cross Fold: Suitable for posters, maps, or infographics.
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