The basic steps for scanning a document

To scan a document to your computer, you need three things: a scanner (or a multifunction printer with a scanner), scanning software, and a document. Place the document face-down on the scanner glass or face-up in the automatic feeder, open the scanning software on your computer, select your settings, and click Scan. The image saves to your computer as a file you can open, edit, email, or print later.

Most computers come with basic scanning software built in. Windows includes Windows Fax and Scan; Mac includes Image Capture. If your scanner came with its own software, that usually works better because it's designed specifically for your hardware. The whole process takes two to five minutes once you know where the buttons are.

Key Takeaways

  • Place your document face-down on the scanner glass or face-up in the feeder tray, depending on your scanner type.
  • Open your scanning software (Windows Fax and Scan, Image Capture, or your scanner's own program) and adjust the resolution and file format before scanning.
  • Click the Scan button and wait for the image to transfer to your computer, which usually takes 30 seconds to two minutes.
  • Save the scanned file with a clear name in a folder you can find later, and check that the image is readable before deleting the original document.

Setting up your scanner hardware

Before you scan anything, make sure your scanner is connected to your computer and turned on. If it's a flatbed scanner (a flat glass surface), plug it in and flip the power switch. If it's a multifunction printer with a scanner, do the same. Wait 30 seconds for the device to fully start up—you'll usually see a light come on or hear a small beep.

Check that your computer recognizes the scanner. On Windows, go to Settings > Devices > Printers and Scanners and look for your scanner's name in the list. On Mac, open System Preferences > Printers and Scanners and look there. If your scanner doesn't appear, restart both the scanner and your computer, then check again. If it still doesn't show up, you may need to install driver software from the scanner manufacturer's website.

Placing your document correctly

How you place your document depends on your scanner type. For a flatbed scanner, lift the lid, place the document face-down on the glass with the top edge toward the back of the scanner, and close the lid gently. The corner of the document should align with the corner marked on the glass (usually the top-left). Don't press down hard—the weight of the lid is enough.

For a scanner with an automatic document feeder (a tray on top that pulls pages through), stack your pages face-up, tap them on a table to align them, and slide them into the tray until you hear a click. The feeder will pull one page through at a time. This method is faster for multiple pages but works best with standard letter-size paper in good condition. Don't use the feeder for photos, fragile documents, or pages smaller than 3 by 5 inches.

Choosing your scanning software and settings

Open your scanning software. If your scanner came with its own program, use that—it usually has more options than the built-in Windows or Mac software. Otherwise, on Windows open Windows Fax and Scan (search for it in the Start menu), or on Mac open Image Capture (in Applications > Utilities). Both are free and work with most scanners.

Before you scan, adjust three settings. First, choose your resolution in dots per inch (DPI). For documents you'll read on screen or email, 200 DPI is fine and scans quickly. For documents you might print or need to read small text, use 300 DPI. For photos or artwork, use 600 DPI. Second, choose your file format—PDF is best for documents because it preserves the layout, while JPG works for photos. Third, choose color mode: Color for photos, Grayscale for black-and-white documents, or Black and White for text-only pages (this creates the smallest files).

Scanning and saving your file

Once your document is in place and your settings are correct, click the Scan or Start button in your software. The scanner will light up, move across the glass or pull the page through the feeder, and the image will appear on your screen in 30 seconds to two minutes. Don't move the document or close the lid while the scan is happening.

When the scan finishes, your software will show you a preview. Check that the entire document is visible, the text is readable, and the edges aren't cut off. If something looks wrong, click Rescan and try again. Once you're satisfied, click Save or Export. Choose a clear filename (like "Tax Return 2024" instead of "Scan001"), pick a folder you can find later (like Documents or a folder named "Scans"), and click Save. Your file is now on your computer.

Scanning multiple pages into one file

If you have several pages to scan into a single PDF, most scanning software has a "batch" or "continuous" mode. In Windows Fax and Scan, click File > New > Scanned Documents, place your first page, click Scan, then place your second page and click Scan again. Repeat for each page. When you're done, click Save and choose PDF as your file format. The software will combine all the pages into one file.

If your scanner has an automatic feeder, load all your pages at once and select "Scan All" or "Continuous Feed" in your software settings. The feeder will pull each page through and add it to the same file. This is much faster than scanning one page at a time. When the feeder is empty and the scan stops, save your file as a PDF.

Troubleshooting common scanning problems

If your scan comes out too dark or too light, open your software settings and look for a brightness or contrast slider. Increase brightness if the scan is too dark, or decrease it if it's too light. If the text is blurry, make sure your document is lying flat on the glass with no wrinkles, and try scanning again at a higher resolution (300 or 600 DPI instead of 200).

If the scanner won't turn on, check that the power cable is plugged in and the outlet works (plug in a lamp to test). If the software won't open, restart your computer. If the scanner is recognized but won't scan, unplug it for 10 seconds, plug it back in, and try again. If you still have trouble, visit the scanner manufacturer's support website and search for your model number—they usually have a troubleshooting guide and driver downloads there.

Frequently Asked Questions

Can I scan directly to email or cloud storage like Google Drive?

Some newer scanners and multifunction printers have this built in—check your scanner's manual or settings menu. Otherwise, scan to your computer first, then open your email or cloud storage and attach or upload the file. This takes an extra 30 seconds but gives you a copy on your computer too.

What resolution should I use for old photos?

Use 600 DPI for photos you want to preserve or print. This captures fine detail and color. If you're just scanning for your records and won't print them, 300 DPI is enough. Higher than 600 DPI creates very large files without much visible improvement for most home photos.

Why is my scanned document sideways or upside down?

You placed the document in the wrong direction. For a flatbed scanner, the top of the document should point toward the back of the scanner. For an automatic feeder, pages should be face-up. If you've already scanned it wrong, most image viewers and PDF readers have a rotate button—open the file and rotate it before saving.

Can I scan a document that's folded or has a bent corner?

Yes, but try to flatten it first by placing it under a heavy book overnight. Bent corners and folds can create shadows or distorted edges in your scan. If the document is fragile, use the flatbed scanner instead of the automatic feeder, which can catch corners and tear pages.

How do I organize scanned documents so I can find them later?

Create folders by category (like "Medical," "Tax," "Receipts") in your Documents folder, and save each scan with a clear name that includes the date (like "Doctor Visit 2024-03-15"). This takes 10 extra seconds per scan but saves you hours searching later. You can also use your computer's search function to find files by name if you forget where you saved something.