Does 1304 mean the book number 1304?

No. Each digit controls a separate group of nine positions: 1 and 3 place marks, 0 leaves a blank group, and 4 places the next mark. Use the sequence specified by your print workflow, not the book’s ISBN.

How should I check the marks before printing?

Check a proof against the imposition layout: confirm the mark sequence, position and size on the folded sections. These marks are for checking section order, not for scanning like a product barcode.

Flattermarken collating marks generator

Create Flattermarken marks for checking book-section order and download PNG or SVG.

Using Flattermarken

Flattermarken help bookbinders spot missing or out-of-order folded sections before binding. They are production marks, not ISBN product barcodes. Match their placement and size to your printer’s imposition layout.

Download PNG for documents or SVG for a sharp, resizable print layout. Generation takes place in your browser, without an account.

Questions about Flattermarken

Does 1304 mean the book number 1304?: No. Each digit controls a separate group of nine positions: 1 and 3 place marks, 0 leaves a blank group, and 4 places the next mark. Use the sequence specified by your print workflow, not the book’s ISBN.
How should I check the marks before printing?: Check a proof against the imposition layout: confirm the mark sequence, position and size on the folded sections. These marks are for checking section order, not for scanning like a product barcode.