Low-content interior library: 147 designs in 3 trim sizes
A logbook, journal or notebook interior is a PDF with the exact trim size, a wider margin on the spine side and an even page count. This page gives those numbers for a 120-page interior, and shows the library we sell that follows them.
What the page layouts look like
The pictures below are simplified sketches of four layout types in the library, drawn by a script. They are not screenshots of the PDFs and carry no text.
Table 1: page size in the PDF (no bleed)
| Trim size | Width in points | Height in points |
|---|---|---|
| 6 x 9 in | 432 | 648 |
| 8.5 x 11 in | 612 | 792 |
| 5.5 x 8.5 in | 396 | 612 |
With no bleed the PDF page is the trim size: 6 x 72 = 432, 9 x 72 = 648, 8.5 x 72 = 612, 11 x 72 = 792, 5.5 x 72 = 396.
Table 2: margins for a 120-page interior
| Edge | Commonly published minimum (24 to 150 pages) | Setting used in the library |
|---|---|---|
| Inside (spine side) | 0.375 in | 0.5 in |
| Outside, top, bottom | 0.25 in | 0.4 in |
Odd pages are right-hand pages, so their inside margin is on the left; on even pages it is on the right. The minimums are the figures commonly published for print-on-demand paperbacks in 2026; they were not confirmed on the printer's own help page for this article, so check your platform's current help pages before you upload.
Table 3: spine width for 120 pages
| Paper | Inches per page | 120 pages |
|---|---|---|
| White | 0.002252 | 0.27 in |
| Cream | 0.0025 | 0.30 in |
120 x 0.002252 = 0.270 and 120 x 0.0025 = 0.300. The cover is a separate file: with a 0.125 in
bleed on each outer edge, a 6 x 9 cover on white paper is 0.125 + 6 + 0.27 + 6 + 0.125 = 12.52 in wide and 9.25 in tall.
What is in the library
- 96 logs and trackers: reading, workout, mileage, expenses, blood pressure, blood sugar, medication, sleep, mood, fishing, hunting, golf, beekeeping, pool, dog training, tasting logs, collections, address book, passwords and more.
- 24 guided journals and planners: gratitude, prayer, Bible study, sermon notes, travel, pregnancy, garden, self-care, five-year memory book, meal and goal planners.
- 27 paper styles: ruled, dot grid, isometric, graph, music staff, guitar tab, Cornell notes, handwriting, calligraphy, storyboard, comic panels, undated planners, habit tracker.
- Every design in 6 x 9, 8.5 x 11 and 5.5 x 8.5 in: 441 PDFs of 120 pages each, one zip per trim size. No covers.
Get the files. The Low-Content Interior Library is a 34 USD download on Gumroad, with a licence to use the interiors inside books you publish and sell (not to resell the files). What was checked, and how: a script parsed every PDF and confirmed the exact page size of its trim on every page, 120 pages, every font embedded (DejaVu Sans), and the same 147 files in all three folders. No file was uploaded to a print platform or printed, and no page was looked at by a person: read every page in your platform's previewer before you publish. It is our own product: we sell it and earn money from each purchase, so this is a commercial link and not a neutral recommendation.