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Drop in your PDFs
Mix PDFs and images, reorder pages, rotate, duplicate and insert blanks. Everything stays on your computer.
Free to start · No sign-up · Nothing uploaded
Turn any PDF into a real book, printed at home.
Foldio puts your pages in the right order for folding, shows every sheet before you print, and walks your printer through double-sided printing. Hand-bound signatures, simple booklets, Arabic and right-to-left books: all in your browser.
Works in desktop Chrome and Edge. Your files never leave your computer.
Signature 1
Why home printing goes wrong
Printing a book should not take three tries and a ruined ream.
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Pages come out in the wrong order.
Foldio arranges every page for folding, as folded signatures or simple booklets, with as many sheets per signature as you like.
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The backs print upside down.
A one-time duplex test learns how your printer turns the paper, so every export comes out the right way up.
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The page count doesn’t divide by four.
Blank pages are added automatically where you choose, and you can drag them anywhere in the book.
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Arabic books bind on the wrong side.
Choose right-to-left and the spine moves to the right, with every sheet ordered for RTL reading.
How it works
From PDF to folded book in three steps.
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Check every sheet
See the front and back of each printed sheet, which signature it belongs to, and the exact steps to print and assemble it.
Front
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Flip through, then print
Turn the pages of the finished book before you use any paper. Then export one print-ready PDF and follow the folding steps.
What’s inside
Everything between “Print” and a book on your shelf.
Folded signatures or loose sheets
Glued or sewn signatures of any size, or cut-and-stack sheets. Pick where blank pages go.
A preview of every sheet
Fronts and backs side by side. Hover a page to see what prints behind it.
The finished book, before you print
Flip through it with real margins and spine offset, and see which sheet each page is on.
Duplex test, once per printer
Print one test page, answer one question, and the backs come out right from then on.
A light PDF editor
Fix a line of text by retyping it, highlight, draw, add images and signatures, crop pages. Your originals never change.
Page numbers and running headers
Book-wide, in Latin or Arabic-Indic digits, starting on the page you choose.
Covers, printed separately
Wraparound or front and back, on A4, A3 or custom card, with the spine width worked out for you.
Projects that save themselves
Every book is autosaved in your browser. Save a .foldio file to back it up or move it to another computer.
Private by design
Foldio has no upload step because it doesn’t need one. Pages are arranged, previewed and exported right in your browser, so your manuscript, your notes and your photos stay on your computer.
More than imposition
Fix the pages. Design the cover.
A light PDF editor, built in
Spot a typo after exporting from Word? Fix it right in Foldio, without going back to the original file.
- Retype a line: Foldio covers the old text and sets yours in its place
- Highlight, underline, draw, add notes, images and signatures
- Crop pages or trim white margins, for a whole file at once
Covers that fit the book
Design the cover in Foldio and print it on its own card, sized to the finished book.
- Wraparound, or separate front and back
- Spine width worked out from your page count and paper, with the spine text set vertically
- A4, A3 or custom card, with bleed and crop marks
A5 book · 80 g/m² paper
Spine width: 10.3 mm
The controls
Every choice that matters, in one panel.
Change anything and every sheet updates instantly.
- Layout
- Folded book, saddle stitch, cut-stack-fold, copies, one-page zine, tri-fold leaflet, cut & stack, wire & spiral, N-up or flash cards.
- Paper
- A4, A3, US Letter, US Legal or any custom size.
- Reading direction
- Left to right, or right to left with the spine on the right.
- Sheets per signature
- From 1 to 16 sheets in each folded group.
- Blank pages
- At the end, before the back cover or after the front, or drag them anywhere.
- Page size
- Fit inside your printer’s margin, or print at actual size.
- Margin & spine offset
- Keep content within your printer’s reach and clear of the fold.
- Print marks
- Fold or cut marks, and sheet numbers on the fold.
- Page numbers & header
- Position, starting page, and Latin or Arabic-Indic digits.
Who it’s for
For anyone who would rather hold it than scroll it.
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Bookbinders & fanbinders
Signatures, sheets per signature, spine offset and a duplex test: everything you need to print text blocks at home.
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Arabic & right-to-left books
The spine on the right, the page order mirrored, and Arabic typed properly in the editor.
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Zines & mini books
One-page 8-page zines, stapled A5 zines and pocket A6 booklets, laid out for you.
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Teachers, parents & events
Storybooks, worksheets, programmes and orders of service: print them as neat folded booklets.
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Students & researchers
Combine papers and lecture notes into one booklet. Four pages on every sheet, and easier to read and annotate.
Right-to-left, done right
Arabic books that open the right way.
Most booklet tools assume every book opens to the left. Choose right-to-left in Foldio and everything mirrors: the spine moves to the right, the page order flips on every sheet, and Arabic text you add in the editor is shaped and joined properly.
اطبع كتابك العربي في البيت، مرتبًا وجاهزًا للطيّ.
Foldio in ArabicLeft to right
Spine on the left. Pages turn to the left.
Right to left
Spine on the right. Pages turn to the right.
Ideas
Printable books, made in minutes.
Pick an idea, choose a few options, and see every page before you create the file. Each one becomes a book you can print, fold and give away. All of them are free to start, in English and Arabic.
Plans
Free to start. Pro when you want more.
Start free with no account. Try everything in Pro free for 14 days, with no card needed.
Free
$0 forever
Everything you need to make a real book at home.
- Import PDFs and images, in any order
- Folded books, stapled booklets, one-page zines and loose-sheet books
- Page editor: fix text, add pictures and page numbers
- Duplex test and a step-by-step folding guide
- Arabic and right-to-left books
- The basic version of every idea, and a free calendar
- No watermark, no page limit, no account
Pro
14 days free$39 a year
That’s $3.25 a month, billed once a year.
$9 a month
Or $39 a year, which saves 64%.
For people who make books often, or want them to look shop-made.
- Everything in Free
- All 10 layouts: tri-fold leaflets, pocket booklets, spiral binding, flash cards and more
- Cover designer with spine, bleed and crop marks
- Print-safe and CMYK files for print shops
- Your own fonts
- Every advanced option in every idea, and every planner
Making books for clients? Designer and Agency plans are coming, with password-protected previews for your clients. Keep me posted
Launch list
Hear first when Pro goes on sale.
Join the list for a launch discount, and tell us what you make, so we build the right ideas and templates first.
Questions
Good to know.
Is Foldio free?
Yes. The Free plan needs no account, adds no watermark and has no page limit. Pro adds more layouts, a cover designer, print-shop files and every advanced option in the ideas, for $39 a year or $9 a month. You can try it free for 14 days with no card, and Pro goes on sale soon.
How does the free trial work?
Pick any Pro feature and start your free trial. You’ll sign in with your email and Pro works straight away for 14 days. There’s no card and nothing to cancel: when it ends you go back to Free and keep every book you made.
What are Ideas?
Ready-made books you can make in minutes: puzzle books, colouring and drawing books, notebooks, handwriting practice, recipe books and planners. Each one is free to start, and you can see every page before you create the file.
Are my files uploaded anywhere?
No. Foldio runs entirely in your web browser. Your PDFs, edits and projects are stored on your own computer and are never sent to a server.
What do I need to use it?
A desktop computer with Chrome or Edge, and a printer that can print on both sides of the paper, either automatically or with your printer driver’s manual two-sided option. There is nothing to install.
What paper and page sizes does it support?
Foldio prints on A4, A3, US Letter, US Legal or a custom paper size. Pages are sized from the paper: half a sheet (A5 or half letter) for folded books and booklets, a quarter or less (A6, A7) for pocket booklets, and an eighth for the one-page zine. Covers can be printed on A4, A3 or custom card.
What is imposition, and what is a signature?
Imposition is arranging pages on a printed sheet so they read in order once the sheet is folded. On the outer sheet of a 16-page signature, for example, pages 16 and 1 share the front and pages 2 and 15 the back. A signature is a group of sheets folded together; a book is made of signatures sewn or glued at the spine. Foldio works out the imposition for you.
Does it work for Arabic, Hebrew, Persian or Urdu books?
Yes. Right-to-left layout works for books in any language: the spine moves to the right and every sheet is ordered for right-to-left reading. Typing Arabic text in the page editor is fully supported, including mixed Arabic and English lines.
Can I edit my PDF before printing?
Yes, lightly. Retype a line of text (Foldio covers the original and places your text on top in the same spot), add text boxes, highlights, drawings, images and signatures, crop pages, and add page numbers or a running header to the whole book.
Where are my projects saved?
Automatically, in your browser on this computer. To keep a backup or move a project to another computer, save it as a .foldio file and open it there.