Your book cover should not be finalised until the inside pages of your book are finished.
This is one of the most common mistakes authors make.
They get excited about the cover, pay for a design, and then later discover the internal page count has changed. Once that happens, the spine width may also change, and the cover may no longer be correct for print.
A print book cover is not just a front image.
For a printed book, the cover usually includes the back cover, spine and front cover in one complete file. It also needs bleed, trim, safe margins, barcode placement and the correct spine width.
To create that properly, your graphic designer needs two very important things:
The final page count.
The internal paper stock you are going to use.
Without those, the spine width cannot be calculated accurately.
Why the final page count matters
The spine width of a printed book is based on the number of pages inside the book.
If your book has 120 pages, the spine will be one size.
If your book changes to 180 pages, the spine will be wider.
If your book drops to 96 pages, the spine will be narrower.
This is why cover design should come after internal book design, not before it.
Once your internal pages have been designed and the final page count is confirmed, the designer can calculate the correct spine width and build the cover to the right size.
If the cover is designed too early, it may need to be adjusted or rebuilt later.
That can cost extra time and money.
Why paper stock matters
Page count is only part of the spine calculation.
The paper stock also matters.
Different paper types have different thicknesses. A 100gsm paper stock will not necessarily create the same spine width as another paper stock, even if the page count is the same.
The thicker the paper, the wider the spine.
The thinner the paper, the narrower the spine.
This is why your designer needs to know the internal paper stock before creating the print-ready cover.
They need to know what paper the book will be printed on so the spine can be calculated correctly.
If you change the paper stock after the cover has been designed, the spine width may change and the cover may need to be updated.
Do not design the cover before the book is finished
You can think about your cover early.
You can collect ideas, look at other books in your genre, write your back cover blurb, prepare your author bio and think about the style you want.
But the final print-ready cover should not be designed until the book is finished internally.
The correct order is:
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Finish the manuscript
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Edit and proofread the content
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Design the internal pages
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Confirm the final page count
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Choose the internal paper stock
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Calculate the spine width
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Design the print-ready cover
If you design the cover before the internal pages are complete, you are guessing.
And guessing is not a good print setup method.
What a print-ready cover includes
A print-ready cover is a complete file prepared to your printer’s specifications.
For a paperback book, this usually includes:
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back cover
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spine
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front cover
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bleed
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trim area
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safe margins
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barcode area, if required
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correct colour setup
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correct final dimensions
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print-ready PDF export
For a hardcover book, the setup may be different again. Hardcover covers often require different measurements, extra bleed, wrap areas, hinge areas and different file specifications.
This is why you should always use the printer’s cover specifications before finalising your artwork.
The front cover is only one part of the cover
Many authors think of the cover as the front cover only.
For print, the cover is the full outside wrap of the book.
That means the designer needs to consider:
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what appears on the front cover
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what appears on the spine
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what appears on the back cover
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where the barcode will go
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where the trim edges are
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where the fold lines are
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where text must stay safely inside the trim area
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how the cover will wrap around the finished book
A beautiful front cover can still fail in print if the full cover file is not set up correctly.
Bleed, trim and safe margins
A print cover needs bleed.
Bleed is extra artwork that extends past the trim edge. It allows the printer to cut the cover down to the final size without leaving unwanted white edges.
The trim line is where the cover will be cut.
The safe margin is the area inside the trim where important text and design elements should stay.
Text should never sit too close to the edge of the cover. This includes the title, subtitle, author name, back cover blurb, barcode area and spine text.
If text is too close to the trim edge, it may look awkward or be at risk of being cut too close during production.
A professional print cover allows enough breathing room.
Spine text needs enough space
Not every book has enough spine width for spine text.
If the book is very thin, the spine may not be wide enough to safely hold the title, author name or logo.
Spine text needs room so it does not wrap onto the front or back cover if there is small movement during printing and binding.
If the spine is too narrow, it may be better to leave it blank.
Your designer and printer can help confirm whether spine text is suitable for your book.
Barcode placement
If your book has an ISBN, the barcode is usually placed on the back cover.
The barcode should be positioned clearly, with enough space around it so it can scan properly.
It should not be placed too close to the trim edge, spine fold or important artwork.
Your designer should allow a suitable barcode area in the back cover design.
If you do not yet have your ISBN or barcode, let the designer know before the cover is finalised.
What your designer needs before starting the cover
Before your graphic designer creates the final print-ready cover, they need the correct information.
You should provide:
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final book title
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subtitle, if any
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author name exactly as it should appear
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final internal page count
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internal paper stock
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finished book size
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binding type
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paperback or hardcover format
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printer’s cover specifications
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back cover blurb
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author bio, if included
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ISBN and barcode, if required
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publisher logo, if required
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any images or artwork to be used
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examples of covers or styles you like
The most important technical details are the final page count and paper stock.
Without those, the spine width cannot be confirmed.
Do not keep changing the cover brief
Just like internal book design, cover design usually includes a limited number of revision rounds.
A designer may allow for a certain number of changes, often around three rounds.
These changes are usually for refining the design, not starting again because the brief has changed completely.
Design changes might include:
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adjusting colours
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refining font choices
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moving text slightly
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changing image placement
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adjusting the back cover layout
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refining the spine
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improving readability
Major changes may cost extra.
These might include:
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changing the book title
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rewriting the back cover blurb
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changing the trim size
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changing from paperback to hardcover
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changing the paper stock after the spine has been calculated
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changing the page count after the cover is built
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replacing the main cover artwork
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asking for a completely different design direction
A clear brief saves time, money and frustration.
Cover design is not the same as internal book design
Cover design and internal book design are related, but they are not the same job.
Internal book design focuses on the inside pages.
Cover design focuses on the outside of the book.
The cover must match the final internal file technically, because the spine width depends on the final page count and paper stock. But the design work itself is different.
Some designers do both internal layout and cover design. Others specialise in one area.
Always check what is included in your quote.
Print cover and ebook cover are different
A print cover and an ebook cover are not the same file.
A print cover includes the back cover, spine and front cover as one complete layout.
An ebook cover is usually just the front cover image.
A print cover must include exact measurements, bleed, trim, safe margins and spine width.
An ebook cover must meet the digital platform’s size and file requirements.
If you are creating both a printed book and an ebook, the print cover and ebook cover should be prepared separately for their different uses.
Design for print first.
Once the print cover is complete, the front cover artwork can usually be adapted for ebook use.
The main thing to remember
Do not finalise your cover before the internal book is finished.
Your graphic designer needs the final page count and the internal paper stock before they can calculate the correct spine width.
If the page count changes, the spine width may change.
If the paper stock changes, the spine width may change.
If the spine width changes, the cover may need to be adjusted or rebuilt.
Finish the manuscript first.
Design the internal pages.
Confirm the final page count.
Choose the internal paper stock.
Then design the print-ready cover.
Doing the cover in the right order will save time, avoid extra costs and give your book the best chance of printing correctly.
