Slot-and-Tab Imposition

Client-side 4-up booklet layout engine. Drop your PDF, configure, and download your imposed sheets instantly.

Version 2.3 (Crease Aligned)
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Assembly Guide & Instructions
Print all imposed pages single-sided on standard A4 paper. Set printing scale to 100% (Actual Size) in portrait orientation, to ensure fold lines match the measurements.
F Portrait A4 Sheet (Front Cover Rotated Bottom Left)
Fold each printed sheet horizontally along the center dotted crease line, folding the green bottom half backward behind the blue top half. This hides the blank side of the paper and leaves the blue pages visible on the outside.
F FOLD BACKWARD (Leaves blue visible)
Fold the landscape strip vertically in half, folding the blue pages inwards (facing each other). The green cover pages on the back will fold around, making the 'F' cover page emerge right-side up on the outside.
F Fold blue pages inwards; green "F" cover emerges on the outside
Apply the 25-50-25 Spine Cutting Rule along the center fold of each strip:
  • Cover Strips (Sheet 1): Cut a single slit in the center 50% of the spine.
  • Inner Strips (Sheet 2+): Cut 25% from top and bottom edges, leaving a center tab.
Cover Strip (Slit) F 50% SLIT Inner Strip (Tab) Cut 25% 50% TAB Cut 25% Apply the 25-50-25 Spine Cutting Rule
Stack all inner strips together. Roll/compress the stack along the folded spine, push them through the cover strip's center slit, then flatten. The tabs will lock securely.
F Roll inner strips & insert through cover slit
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