Formatting · 4 min read

How to choose a trim size for your paperback

Trim size affects page count, cost and reader comfort. A practical look at the common options for fiction and non-fiction.

Trim size is the finished width and height of your book. It influences how many pages you end up with, what the printing costs and how the book feels in the hand.

Look at comparable books

Pick up several recent books in your genre and measure them. Readers expect certain sizes, and matching them makes your book look at home on the shelf.

Consider page count

A smaller trim usually means more pages. A larger one reduces page count but may feel less portable. Both affect spine width and printing cost.

Check your printer's options

Not every printer offers every size. Confirm availability before you format, because changing size later means re-flowing the whole interior.

Sample article: draft pending editorial approval.

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