FoldroomLocal print workspace

PDF booklet maker

Arrange reading-order PDF pages into a left-bound booklet. Preview each sheet and download a vector-preserving print PDF.

Make your next fold predictable.

Choose a file to begin, or try the included local sample. Your files stay in this tab.

How to use it

  1. Import a reading-order PDF, with its cover as page 1.
  2. Choose A4 or Letter landscape and set a margin for each half-page.
  3. Inspect each sheet front and back. Missing pages are padded with blanks to reach a multiple of four.
  4. Download the already-imposed PDF. Print one duplex sheet at 100% with short-edge flipping, then fold and check it.

Questions, answered

Does this preserve text and vectors?

Yes. Source PDF page content is embedded into PDF half-pages. Only the on-screen preview is rasterized; the downloaded PDF is not made from screenshots.

Why are blank pages added?

A folded sheet has four booklet pages. A five-page PDF therefore needs eight page positions, including three blanks.

How do I avoid upside-down backs?

For landscape sheets use duplex short-edge flipping. If your printer only flips on the long edge, try Rotate back sides 180° and test one sheet. Printer behavior varies, so a real folded test remains essential.

Which PDFs are unsupported?

Password-protected PDFs, interactive form fields, unreadable files, files over 20 MB and more than 128 pages are rejected. Flatten forms first. Annotations, comments, embedded media and links are not reproduced as interactive objects. This is a single-signature booklet tool, not commercial creep or multi-signature imposition.

Understand one folded sheet

Reading order is not print order

An eight-page source begins with pages 8 and 1 on the first front, then 2 and 7 on its back. The inner sheet carries 6 and 3, then 4 and 5. Page labels beside the real previews expose that order.

Avoid double imposition

The output already places two booklet pages on each landscape side. Printing it with a second Booklet or Multiple Pages setting rearranges or shrinks it again. Use ordinary duplex printing and verify a physical fold.

Privacy

Files are processed locally in this browser tab. This version has no file upload endpoint, analytics, accounts or third-party processing service. Reset clears document/image references and preview buffers. Closing the tab releases its data. Downloads stay on your device.

The host may log ordinary website requests such as IP addresses. Theme choice is stored on your device; there are no tracking cookies. Review this notice before adding services.

About Foldroom

Foldroom is an independent, focused print utility. It is not affiliated with Adobe, printer manufacturers or photo platforms. No account or payment is required.

The sample PDF is generated locally and labeled for page-order testing. It contains real vector text, not a fake output preview.