What 105 × 148 mm means
A6 is compact enough for short lists and portable planning, but dense schedules and multi-column layouts need careful previewing. Its finished bounds do not specify rings, holes, covers or printable area.
The builder preserves these finished dimensions and will not silently scale the page to make an incompatible imposition fit.
Choose a source sheet and binding clearance
Print directly on A6, center one page on A4 or US Letter, or use two-up on either source sheet. A6 fits within a 148.5 × 210 mm A4 cell and a 139.7 × 215.9 mm Letter cell, so both imposed paths preserve 100% size and leave trim space.
Centered and two-up files include crop marks where there is room outside the finished page. A mark is omitted where a source-sheet edge is already the finished edge; this does not change the page dimensions.
The inner content margin moves writing areas away from the selected binding edge. It is content clearance, not a punch-hole coordinate or a promise that a particular punch will fit. Trim first, then align the finished sheet with the punch maker’s physical guide.
Run one measured test
Download a one-page test before committing to a full run. In the print dialog, choose the paper named in your plan, turn off Fit or other scaling, and measure the calibration mark. A mathematically correct PDF cannot predict a printer driver, printable area, feed path, or borderless setting.
After trimming, measure width and height before punching. If the result is off, correct print scaling or the selected source sheet; do not compensate by guessing new page dimensions.