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DPI Canada | Safety Signs | Digital Printing » File Format Help

File Format Help

We only accept files in PDF format.

.PDF is the Preferred Type

To offer you consistent quality, low prices, and fast turnaround, we have adopted a PDF workflow. All files submitted for printing must be PDF. This ensures your job gets printed exactly how you want it, and when you expect it.

What is .pdf ?

PDF stands for Portable Document Format. It was created by Adobe, and is fast becoming the standard for all document transfers, not just web documents. Formatted properly, PDFs can provide smaller file sizes, eliminate font issues, cross platforms, include formatting features, and carry forward images. They provide as much resolution to the printer as required, provided the source document is of a high enough resolution to begin with.

What do I need to know about preparing my .pdf ?

Choose your layout board dimensions:
When creating your art work, choose the layout board dimensions to match the dimensions you want the printed product to be, and include the desired white space. We cannot determine whether if the excess blank space is required in your sign application, so we print the entire art board. (A small image saved on a large art board is a large print document.)
Position your design on the layout board:
Ensure your design is properly placed on the layout board. Any portion of any graphics lying outside the layout board will not be printed. However, they will add to file size and complexity. You may wish to use a photo editing package to crop overly large images as opposed to masking. This may significantly reduce file size for some jobs, which results in a faster upload to our web site and faster printing.
Work at full scale:
Whenever possible, work at actual size. If limitations in your software do not allow this, then work at a 50% or 25% scale and we will automatically scale your image to the proportional size that you enter on the order form. Please refer to Working Large section above if you are going to work in scale. (For us to enlarge the file, you must work at a higher resolution.)
Full colour bleeds:
Should your job require full colour printing edge to edge on a full 4’x8’ sheet, you will be required to make your layout board 1/8” (0.125”) larger all around (48.25” x 96.25”) and bleed your colours to the very edge.  Take your background colour to the outer edges only, your finished size will still be 48” x 96”.  Please indicate that you desire a full bleed when submitting your job for printing.
Embed the fonts:
When saving your file as a PDF, choose the option to embed the fonts. This provides our RIP software with the necessary information to print your job, even if we don’t have the fonts you are working with on our computers. Embedding the fonts in a PDF file does not install the fonts on our system, so you must embed the fonts in every document you send us.
Check the resolution of the images you use:
Bitmap, jpg, tiff and other rasterized images have a fixed resolution. This means that the larger they are printed, the lower the quality of the final output. That does not mean you should not enlarge an image, but you must be careful not to breach certain thresholds.
For the purposes of most signage, you want to ensure that images have a resolution of 180 ppi once they are sized in your application to final print size. This provides a good image close up. If your signage has a large viewing distance (such as 20+ feet as in billboards), the resolution can be as low as 45 ppi or even less. When viewing at actual size on the monitor, you can be the judge. Simply back away from the monitor. You have to be aware of your client’s expectations as to viewing distance, and the point where the pixelation becomes acceptable.
Embed the images:
During development of your art work, you are free to work with either embedded or linked images. However, on the final copy being sent with your order, you must “parse” or embed the images. Most software allows you to do this at the “Save as PDF” stage.
Work in CMYK:
While CMYK printing does have some limitations, we have a very good colour gamut. Some RGB images may print better as RGB, but unexpected results may sometimes occur. Working in the CMYK colour mode provides the most consistent colours.
Use Pantone colours for most spot colours:
Our RIP will match spot colours even better if you name them using Pantone standard names pulled directly from your application’s Pantone approved palettes. These standard colours do not necessarily provide perfect matches, but they provide the best possible results.
Avoid using percentages of spot colours, spot colours in gradients, or having transparencies interacting with spot colour filled vector images. In these cases, try using CMYK colours instead. This is because the RIP software will treat the interacting elements as CMYK and the balance as spot, creating colour differences.
Include desired trim lines:
If you would like trim lines, place the outlines where desired. We will follow the outlines as indicated on your submitted file.
Proof your art work in Adobe Reader:
Proofing your files for resolution and image details is straightforward. After saving as PDF, open the file in Adobe Acrobat Reader (available free from Adobe). Do not use your application as the final check; use Reader.
If you have designed at full size, then set your zoom to 100%. Scroll around and proof for resolution and fine detail. Reduce your view to check larger items, and “view fit to page” to ensure you have left adequate white space for any mounting, cutting, and aligning methods that you may use. Remember to hold white space or use a full bleed image for hemming banners. If you don’t like what you see, don’t submit it for printing. You are welcome to contact us to discuss any issues you may be having.

PDFs can be created in numerous ways. Most graphics applications allow you to save directly as PDFs. If your application does not, there are third party plug-in applications and print drivers that will allow you to convert files.