The basic approach: flatten the book and scan it page by page

Scanning a book means converting its pages into digital image files on your computer. Unlike scanning a single sheet of paper, a book requires you to open it flat, position each page under a scanner, and capture them one at a time — or use a specialized book scanner that does this faster.

The simplest method uses a standard flatbed scanner (the kind most people have access to at home, work, or a library). You open the book, place one page face-down on the glass, close the lid gently, and scan. Then you flip to the next page and repeat. This takes time but works with any scanner and produces clean, readable files.

If you are scanning a thick book or plan to scan many books, a dedicated book scanner — a device built specifically for this task — can cut the time in half. These machines photograph both pages at once while the book stays open, then automatically crop and straighten the images. They cost between $300 and $3,000 depending on speed and image quality, so most people rent them from libraries or use a scanning service instead.

Key Takeaways

  • A flatbed scanner works for any book but requires you to scan each page individually, taking 30 seconds to a minute per page depending on your scanner's speed.
  • Open the book only as far as it will comfortably go without cracking the spine, and position the page so the text sits flat against the glass.
  • Scan at 300 dots per inch (DPI) for reading and searching text, or 600 DPI if you need to print the pages later at full size.
  • Many libraries lend book scanners for free or low cost, and some offer scanning services where staff scan books for you.
  • Save each page as a separate image file first, then combine them into a single PDF using free software like IrfanView or PDFtk.

Preparing the book so pages scan flat and readable

The biggest mistake people make is opening the book too wide. When you force a book flat, you bend the spine and the pages curve away from the scanner glass, creating blurry edges and shadows. Instead, open the book only as far as it naturally wants to go — usually 120 to 140 degrees — and let the pages rest gently on the scanner bed.

Position the page so the text runs parallel to the edges of the scanner glass. If the page is tilted, the scanner software will have trouble straightening it later, and the final image will look crooked. Most scanners have alignment marks or a grid on the glass to help you position the page correctly.

If the book is old, fragile, or valuable, consider whether scanning is worth the wear. Repeatedly opening and closing a delicate binding can loosen pages or crack the spine. For rare or antique books, a library or archive may have already scanned it, or they can do it for you using equipment designed not to damage the original.

Scanning settings that produce readable, searchable files

Before you start, open your scanner's software on your computer and adjust three settings: resolution, color mode, and file format.

Resolution is measured in dots per inch (DPI). For a book you plan to read on screen or search for text, 300 DPI is the standard — it captures enough detail that the text is sharp and readable. If you plan to print the scanned pages later at the original book size, use 600 DPI instead. Going higher than 600 DPI creates much larger files without noticeably better results for most books.

Color mode depends on the book. If it has color photos or illustrations, scan in color. If it is black text on white pages, scan in black and white or grayscale — this creates smaller files and scans faster. Grayscale is a good middle ground: it captures shading and faded text better than pure black and white, but produces smaller files than color.

File format matters for what you do next. Save each page as a TIFF or PNG file if you plan to combine them into a PDF later, or as JPEG if file size is your main concern. JPEG compresses the image more, making files smaller, but loses some detail each time you save. For a book you want to keep long-term, TIFF or PNG is safer.

The step-by-step scanning process

Start with the front cover or the first page of text. Open the book to that page, position it on the scanner glass, and close the lid. In your scanner software, click the preview button — this shows you what the scan will look like before you commit. Check that the page is straight, the text is sharp, and no shadows appear along the spine. If something looks wrong, lift the lid, adjust the page, and preview again.

Once the preview looks good, click scan. The scanner will capture the image and save it to a folder on your computer with a name like "scan001.tif". Most scanners let you name the file or set it to auto-number, so each page gets a unique name in order.

Flip to the next page, position it, and repeat. This is the time-consuming part — a 300-page book takes 2 to 5 hours on a standard flatbed scanner, depending on how fast your scanner works and how careful you are with positioning. If your scanner has an automatic document feeder (ADF), it can feed single sheets automatically, but books do not work with an ADF because the pages are bound together.

As you scan, keep the pages in order. If you scan the front cover, then pages 1 through 50, then the back cover, your file names should reflect that sequence so you can combine them correctly later.

Combining individual page scans into a single PDF

After you finish scanning, you will have dozens or hundreds of individual image files. To turn them into a single, readable PDF, you need to combine them in order.

The easiest free tool is IrfanView, a lightweight image viewer available for Windows and Mac. Open IrfanView, go to File > Create Slideshow/VCD, select all your scan files in order, and choose "Create PDF". IrfanView will combine them into one PDF file and save it to your computer.

On Mac, you can also use the built-in Preview app. Open the first scan in Preview, then go to Tools > Combine PDFs. Drag and drop your other scans into the window in order, and Preview will merge them into a single PDF.

If you want more control — such as rotating pages that scanned sideways, removing duplicates, or adjusting image quality — use PDFtk (free, command-line tool) or Ghostscript (free, also command-line). Both are more technical but give you fine control over the final result. For most people, IrfanView or Preview is enough.

Once your PDF is created, open it in a PDF reader like Adobe Acrobat Reader or your web browser to check that the pages are in the right order and nothing is missing or blurry. If you find a problem page, you can rescan just that page and rebuild the PDF.

Using a library book scanner or scanning service instead

If you do not want to spend hours scanning a book yourself, many public libraries lend book scanners for free or a small fee. You take the scanner home, scan the book at your own pace, and return it. This is faster than using your own flatbed scanner because the book scanner captures both pages at once and does not require you to flip the book back and forth.

Some libraries also offer a scanning service where you bring the book to the library and staff scan it for you. This usually costs $0.10 to $0.25 per page, so a 300-page book runs $30 to $75. The advantage is that you do not have to do the work, and library scanners are often higher quality than home equipment.

For very large projects — such as scanning an entire personal library — some companies offer bulk scanning services. They pick up your books, scan them, and return the originals along with a hard drive of PDFs. These services cost more but are worth it if you have hundreds of books.

Frequently Asked Questions

Can I scan a book without opening it all the way?

Yes, and you should. Opening a book only 120 to 140 degrees keeps the pages flat against the scanner glass and prevents shadows along the spine. If you force it wider, the pages curve away from the glass and the edges of the scan become blurry. For old or fragile books, opening it less is also gentler on the binding.

What DPI should I use for a textbook I want to search for words?

Use 300 DPI. This resolution is high enough that optical character recognition (OCR) software can read the text accurately and let you search for words in the PDF. Higher DPI does not improve OCR results much but makes files much larger.

My scanner has an automatic feeder — can I use it for a book?

No. An automatic document feeder (ADF) is designed for loose sheets of paper. A book's pages are bound together, so they cannot feed through. You must use the flatbed glass and scan each page manually, or use a dedicated book scanner.

How long does it take to scan a 400-page book?

On a standard flatbed scanner, expect 4 to 8 hours depending on your scanner's speed and how carefully you position each page. A dedicated book scanner cuts this to 1 to 2 hours because it captures both pages at once. A library scanning service takes a few days but requires no work from you.

Can I scan a book that is still in print and under copyright?

Scanning a book you own for your personal use is generally legal in most countries. However, sharing the scanned PDF with others, posting it online, or distributing it violates copyright law. If the book is still in print, the author and publisher still own the rights to it. Check your local copyright laws if you are unsure.