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  NOTE: Following Webcom acquisition by Marquis Book Printing, this website will be permanently closed by the end of April, 2020, and all content redirected to See you there!

Prepress Services

Full pre-flight and preparation

The integration of time-saving automated book print production starts here. When you partner with Webcom for your printing needs, automation is a part of every stage of the prepress workflow: from pre-flight and imposition, to colour management and proofing, to digital/offset print preparation. Knowledgeable staff adds a human touch to the automation, thoroughly checking anything that might affect the quality of the final product. If we encounter any issues, we work with you to resolve them quickly and efficiently.

Creating a Print-ready PDF?

For best results, verify that your PDF files comply with Webcom’s pre-press specifications before uploading. Select the button below to access an updated version of those specs. If you have any question or problems creating print-ready pdfs, please send us a message  and a pre-press representative will provide you with assistance.

Online File Upload and Approval

Webcom’s InSite Prepress Portal offers browser-based file upload, instant pre-flight (including error notifications) and online collaborative content approval that dramatically reduces proofing cycle turnaround time. Please contact us to set up your account, then use the link below to direct you to the InSite login page.

Need Some Help?

If you have questions about preparing your files, talk to us. We’re happy to show you everything you need to know.

Glossary of Terms


Objects placed with the intention of being printed to the edge of the sheet need to extend a minimum of 0.125” beyond the trim size of the page. This area around the trim is referred to as the ‘bleed area,’ or simply ‘bleed.’ For bleeds to appear in a PDF, it will need to be exported properly. Additionally, the document will need to be created properly by setting up bleeds in the document setup dialogue.


Trim or Crop Marks

Trim marks are essential for indicating where the trim ends and the bleed begins. They are located at least 0.125” away from the trim, outside of the bleed area. When the sheet is cut to the final trim size, the bleed area will be cut off as well as any trim marks.

Trim or Crop Marks

Trim Size

The final size of the printed page is referred to as the trim size. Everything within the trim will be printed, anything beyond the trim will be cut off when the file is printed and produced. Adobe Acrobat needs to be able to recognize the trim size that has been set.

Trim Size

Type Safety

A necessary area of space between the trimmed edge of a sheet and the body text. This 0.25” allowance is the best way to prevent the text from getting cut off when it is too close to the edge of the sheet. In InDesign, type safety is indicated by setting the margins when the document is created.


CMYK Colour Space

Printed files need to be in the CMYK colour space. CMYK is a colour mode in which all colours are made using these four colours: cyan (C), magenta (M), yellow (Y), and black (K). All images need to be supplied in CMYK. When a spot colour is used in a file, it should be converted to CMYK process inks to ensure the colour will print how it was intended.

RGB Colour Space

RGB is the default colour mode in most design programs and digital cameras. RGB is a colour mode in which all the colours are made using these three colours: red (R), green (G), and blue (B). If an image is created with RGB and then converted to CMYK for print, a visible change in colour may occur. Colour on a monitor will never look the same when printed on paper due to the differences in how the colour is displayed.

RGB Colour Space

Rasterized Images

If a file or text is rasterized you will no longer be able to make adjustments to separate objects. A raster image can appear pixelated and low quality. If using a raster image is necessary, rasterizing at 600 DPI is recommended. By keeping all text, shapes and lineart in vector format, optimum quality will be maintained.

Image Resolution (DPI)

Image resolution is the detail in which the image is displayed. The lower the resolution the more pixelated or blurry the image will appear, the higher the resolution the sharper the image will appear. For print, the minimum resolution for continuous tone images should be no less than 180 DPI, and 600 DPI for lineart. Even if the image quality is acceptable on screen, the low quality image will be noticeable on a printed page.

Image Resolution

Non-Embedded Fonts

When an issue such as non-embedded fonts appears in your document, it is likely due to an improper export to PDF. To prevent sending files that have corrupt or non-embedded fonts, it is necessary to specify when exporting the PDF. In the export dialogue in InDesign under Advanced, ensure that ‘Subset fonts when percent of characters used is less than’ is set to 0%. This means 100% of all fonts used in the document will be embedded in the file rather than just the characters used. There should be no subsets in any files as all fonts need to be embedded.

Ink Coverage

Ink coverage involves the use of more than one process CMYK ink to create a colour in a design. When deciding on a colour swatch to use for type, all black text needs to be using the 100% black (K) swatch or in 100% gray scale and no less than 6 pts in size to ensure optimum readibility. If using a colour swatch is necessary, refrain from using any type less than 8 pts that uses more than one ink colour. Additionally, when choosing an ink colour for solids in offset sheetfed and web printing, total ink coverage should not exceed 220%. For digital printing, up to 300% total ink coverage is acceptable, however it should be avoided if possible.

Ink Coverage


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