About

Hi. I’m an independent developer, and I make small printed booklets and zines: short collections, event handouts, little notebooks for friends. Booklet Imposer is the tool I kept wishing I had every time I finished a PDF and had a stapler waiting on the table.

I build and maintain the site on my own. There is no company, agency, or print shop behind it, and nobody else sees the files you open with it.

Turning an ordinary PDF into a folded booklet is harder than it looks. The pages have to be rearranged so that, once the sheets are stacked, folded, and stapled, they read 1, 2, 3 in the right order. Printer “booklet” modes exist, but they work differently on every machine, and the online tools I tried wanted me to upload my files to their servers first.

I wanted something that does one job well: take a PDF, arrange its pages for saddle stitching, show me exactly what each sheet will look like, front and back, and give me back a single file I can print anywhere. So that is the whole scope. Booklet Imposer makes saddle-stitched booklets. It doesn’t merge, split, compress, or convert PDFs, and it doesn’t try to be a full prepress suite.

Everything happens in your browser. When you choose a PDF, it is read and rearranged on your own computer; the file is never uploaded to me or to anyone else.

The tool counts your pages and, if the total isn’t a multiple of four, adds blank pages at the end, because each folded sheet carries four pages (two on each side). It then places the pages on landscape sheets in booklet order. For an 8-page booklet, the outer sheet carries pages 8 and 1 on one side and 2 and 7 on the other. Optional settings add a gutter (extra space along the fold), creep (a small inward shift for thicker booklets), and bleed. You can preview every sheet before downloading one PDF, ready for double-sided printing.

The guides explain each step in more detail, from what saddle stitch is to printing and stapling.

The page-ordering rules are covered by automated tests. They check the sheet layout for 4-, 8-, 12-, 16- and 20-page booklets, and they check that a 1-page file is padded to 4 pages and a 5-page file to 8 without dropping or reordering any of your pages. Other tests confirm that the gutter always lands on the fold side of each page, that creep leaves the outer sheet alone and moves the innermost sheet the most, and that “Rotate back pages 180°” only affects the back of each sheet.

There is also a scripted browser check. It loads the numbered, color-coded 8- and 16-page sample PDFs (you can try them from the tool too), exports them, and logs every network request to make sure no PDF is sent anywhere. Printers still differ from one another, which is why every guide on this site recommends printing one test sheet before a full run.

Booklet Imposer is free, with no account, no watermark, and no paid tier. The site shows ads from Google AdSense to cover hosting and the time I put into it. Ads never block the export. The privacy policy explains what that means for cookies.

If a booklet prints wrong, a page is confusing, or you’d like a feature, email me at hello@bookletimposer.com. The contact page lists what is useful to include.