Skip to main content
Mofumi PDF

Spine & Cover Maker

Generate a print-ready book spine or full wrap-around cover sized from the page count.

100% Private — files never leave your device
Upload PDFDrop files here or click to chooseAccepted: PDF Files never leave your device

About this tool

Spine & Cover Maker calculates the spine width of a printed book from its page count and paper thickness, then draws a spine strip or a full wrap cover (back + spine + front) with bleed and fold marks.

Add the book PDF to take the page count and title from it, or just type the numbers. Choose the trim size, bleed, colours and whether spine text reads top-to-bottom (English convention) or bottom-to-top.

Typical paper: 80 gsm ≈ 0.10 mm, 100 gsm ≈ 0.12 mm per sheet. Always confirm the exact spine width with your printer before ordering.

Engines: pdf-lib

How to use

  1. 1

    Add your book PDF or enter the page count.

  2. 2

    Set the paper thickness, trim size and title.

  3. 3

    Click “Create spine” and download.

Use cases

  • Self-publishing

    Make a cover template that matches your interior page count.

  • Binding theses

    Print a spine label for a bound thesis or report.

  • Archive binders

    Create spine labels for document binders.

Frequently asked questions

How is the spine width calculated?

Sheets (pages ÷ 2) × paper thickness, plus the cover board thickness on both sides.

Do I need a PDF?

No — enter the page count and title and run without a file.

What is bleed?

Extra colour beyond the trim line so no white edge shows after cutting. 3 mm is standard.

You may also like