Information on uploading your Poster Print Artwork

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Important Information About RGB and CMYK

Many graphics software programs give you the choice to work in either RGB or CMYK. These are called “color spaces”. Scanners and digital cameras create images using combinations of just three colors: Red, Green and Blue (called “RGB”). These are the primary colors of light, which computers use to display images on your screen. Printing presses print full color pictures using a different set of colors, the primary colors of pigment: Cyan (blue), Magenta (red), Yellow and Black (called “CMYK”). This is “4-color process” or “full-color” printing that comprises the majority of magazines and marketing materials you see every day. At some stage your RGB file must be translated to CMYK in order to print it on a printing press.

It’s Best If You do the RGB-to-CMYK Conversion of Your Images

You will have more control over the appearance of your printed piece if you convert all of the images from RGB to CMYK before sending them to us. When we receive RGB images, we do a standard-value conversion to CMYK, which may not be perfectly to your liking. We want you to be happy, so please, take the time to prepare your file properly. We cannot be responsible for sub-par results if you furnish your images in RGB. Even though monitors always use RGB to display colors, the colors you see on your monitor will more closely match the final printed piece if you are viewing them in the CMYK color space.

Be aware that it is possible to see colors in RGB that you can’t make with CMYK.

They are said to be “out of the CMYK color gamut”. What happens is that the RGB-to-CMYK translator just gets as close as possible to the appearance of the original and that’s as good as it can be. It’s something that everyone in the industry puts up with. So it’s best to select any colors you use for fonts or other design elements in your layout using CMYK definitions instead of RGB. That way, you will have a better idea of how they will appear in your printed piece. Here’s a common example: many programs translate the 100% Blue in RGB into a somewhat purple-looking color in CMYK. We recommend a CMYK value of 100-65-0-0 to get a nice clean blue. Working in the CMYK color space allows you to select the CMYK recipe, or “screen build”, that gives you the results you want.

If you’ve created your own artwork, we can print directly from most
popular PC and Mac file types including:

  • Acrobat PDFs (preferred)
  • JPEGs (preferred)
  • *Illustrator (Outlined File)
  • *Photoshop (Flattened File)
  • *Publisher
  • *Word
  • * Please note: Issues may arise with files submitted in these formats, therefore a digital proof may be emailed and require sign off before print which may cause a delay to your order.

*Files supplied at a different size to the size ordered will be scaled proportionally to the shortest measurement unless otherwise requested. You can use the ‘notes’ section to supply any additional information.

For Large format posters, best results require the file to be between 100dpi and 300dpi. Anything less may print with a pixilated ‘jagged’ look - Something that looks good on screen won’t always print to the standard you require.

Please remember that our 90gsm, 120gsm and Blueback papers print with a very small approx 3mm white border.

If we spot anything which could affect the quality of your order, we will contact you to discuss the issue before pressing ahead.

If you feel your upload maybe too large, you can always let us
have the link to where it is or just contact us.