The basic steps for any scanner

To scan a document, you place the paper in your scanner, open the scanning software on your computer, and click the button to capture the image. The scanner converts the paper into a digital file — usually a PDF or JPG — that saves to a folder you choose. Most home scanners take 10 to 30 seconds per page.

The exact steps depend on your scanner model and whether you use Windows or Mac, but the workflow is the same: load the document, start the scan, choose where to save it, and wait for the file to appear on your computer.

Key Takeaways

  • Place the document face-down on the glass or face-up in the automatic feeder, depending on your scanner type.
  • Open your scanner's software on your computer — usually found in the Start menu (Windows) or Applications folder (Mac) — and select the scan button.
  • Choose PDF format for documents you want to keep readable and searchable, or JPG if you just need an image.
  • Save the file to a folder you can find later, such as Documents or a folder named for the document type.
  • Most scanners let you scan multiple pages into one file by feeding them one at a time or using an automatic document feeder.

Preparing your document and scanner

Before you scan, remove any staples, paper clips, or tape from your document. Fold or crease marks, coffee stains, and bent corners will show up in the scan, but the scanner will capture them as they are — you can crop or edit the image afterward if needed.

Clean the glass or feeder tray with a soft, dry cloth. Dust or smudges on the glass will appear as dark streaks across your scan. If your scanner has an automatic document feeder (ADF) — the tray that holds a stack of pages — make sure the pages are straight and not stuck together before you load them.

For a flatbed scanner (the kind with a glass top), place the document face-down on the glass, with the corner aligned to the corner marked on the scanner. For an ADF, place pages face-up in the tray and adjust the side guides so they hold the stack snugly without bending it.

Opening the scanner software and starting a scan

On Windows, go to the Start menu and search for your scanner's name — for example, "Canon" or "HP" — or look for a program called "Scanner" or "Scan". On Mac, open the Applications folder, then Utilities, and look for Image Capture or your scanner's own software. If you do not see the software, check the disc or read card that came with your scanner, or visit the manufacturer's website to read it.

Once the software is open, you will see a preview window and a scan button — usually labeled "Scan", "Start", or with a camera icon. Before you click it, check the settings: make sure the resolution is set to 300 DPI (dots per inch) for documents you want to read clearly, or 150 DPI if file size matters more than sharpness. For photos, use 600 DPI or higher.

Click the scan button. The scanner will light up, move across the page, and capture the image. For a flatbed scanner, this takes 10 to 30 seconds. For an ADF, the feeder will pull the first page through automatically, and you can load the next page while it scans.

Choosing a file format and location

The scanner software will ask where to save the file and what format to use. PDF is the best choice for most documents — it keeps the layout intact, works on any computer, and you can search for text inside it if the scanner has OCR (optical character recognition) turned on. JPG is smaller and faster to email, but it compresses the image and makes text harder to search. TIFF is larger and less common, but preserves every detail if you plan to edit the image later.

For the save location, choose a folder you will remember — Documents, Desktop, or a new folder named for the document type (such as "Tax Returns" or "Medical Records"). Avoid saving to the Downloads folder, where files get lost easily. Give the file a clear name with the date, such as "Lease_2024_01_15" instead of "Scan001".

Scanning multiple pages into one file

If you have more than one page, most scanners let you add pages to the same file. After the first page scans, the software will ask if you want to scan another page. Click "Yes" or "Add Page", then place the next page in the scanner and click the scan button again. Repeat until all pages are done, then click "Done" or "Finish" to save the complete file.

If your scanner has an ADF, you can load all pages at once and the feeder will pull them through one by one. The software will combine them into a single file automatically. This is much faster than scanning pages one at a time on a flatbed.

Fixing common scanning problems

If the scan comes out dark or light, the resolution was too low, or the document was not placed straight on the glass, open the software again and adjust the brightness or contrast slider before rescanning. Most software shows a preview of how the scan will look before you save it — use this to catch problems before the file is created.

If text in the scan is blurry, increase the DPI setting to 300 or higher. If the image is crooked, make sure the document's corner is aligned to the corner mark on the scanner. If the scanner pulls multiple pages at once from the ADF, fan the stack of pages by bending them slightly back and forth, then reload them and try again.

If the software does not open, restart your computer and try again. If it still does not work, unplug the scanner from the USB cable for 10 seconds, plug it back in, and wait for Windows or Mac to recognize it — you may see a notification that the device is ready to use.

Where to store your scanned documents

After you scan, move the file from your Documents folder or Desktop to a permanent location where you can find it later. Create a folder structure that makes sense — for example, a "Financial" folder with subfolders for "Tax Returns", "Bank Statements", and "Receipts". This takes a few minutes now and saves hours of searching later.

If you scan documents regularly, consider backing them up to an external hard drive or cloud storage such as Google Drive or OneDrive. This protects you if your computer fails. Many people scan important documents like leases, insurance policies, and medical records and keep them in a cloud folder so they can access them from any device.

Frequently Asked Questions

What is the difference between DPI and file size?

DPI (dots per inch) controls how detailed the scan is — higher DPI means sharper text and images, but larger file sizes. For documents you want to read and search, use 300 DPI. For photos or artwork, use 600 DPI or higher. For quick reference copies, 150 DPI is enough and creates smaller files.

Can I scan directly to my email or cloud storage?

Many newer scanners have buttons or software options to scan directly to email, Google Drive, or OneDrive without saving to your computer first. Check your scanner's software menu or the buttons on the scanner itself. If your scanner does not have this feature, scan to your computer and then move or upload the file manually.

What if my scanner is not showing up in the software?

Make sure the USB cable is plugged into both the scanner and your computer. Restart your computer and wait 30 seconds for Windows or Mac to recognize the device. If it still does not appear, unplug the scanner, wait 10 seconds, and plug it back in. If the problem continues, visit the scanner manufacturer's website and read the latest driver software for your model.

Is PDF or JPG better for storing important documents?

PDF is better for documents you need to keep readable and searchable, such as contracts, insurance policies, and tax returns. JPG is smaller and faster to email, but does not preserve text as clearly. If you scan with OCR enabled, PDF lets you search for words inside the document, which JPG does not.

How do I scan a document that is larger than the scanner glass?

Scan the document in sections — for example, the top half and bottom half — then use free software like IrfanView or Preview (on Mac) to stitch the images together. Alternatively, some scanners have a "book" or "panorama" mode that lets you scan a large document by moving it across the glass in stages and combining the scans automatically.