The basic steps: what happens when you scan
When you scan a document using your printer, the scanner reads the paper and sends an image file to your computer. Most printers made in the last ten years have a built-in scanner. The file lands in a folder on your computer — usually your Documents folder or a dedicated Scans folder — and you can then open it, edit it, or send it anywhere you need it to go.
The process takes about 30 seconds per page once you have the software set up. You place the document face-down on the glass or in the automatic feeder, press a button on the printer or your computer, and the scan appears on your screen.
Key Takeaways
- Your printer needs scanning software installed on your computer — usually the manufacturer's driver — before you can scan anything.
- Most printers come with a USB cable or connect over WiFi, and both methods work equally well for scanning.
- You can scan directly from the printer's physical buttons or from your computer using the scanning software.
- Scanned files are typically saved as PDF or JPG images, and you can change the quality and file type before scanning.
- If scanning fails, the printer and computer are usually not talking to each other, which means reinstalling the driver often fixes it.
Install the printer driver on your computer
Before you can scan, your computer needs to know how to talk to your printer. This happens through driver software — a small program that translates your computer's commands into something the printer understands.
Most printers come with a CD or a download link to the manufacturer's website. If you have the CD, insert it into your computer and follow the on-screen instructions. If you do not have the CD, go to the printer manufacturer's website (Canon, HP, Brother, Epson, Xerox, and others all have support pages), find your exact printer model, and download the driver for your operating system — Windows or Mac.
After installation, restart your computer. Your printer should now appear in your list of connected devices. You can check this by going to Settings > Devices > Printers on Windows, or System Preferences > Printers & Scanners on Mac.
Connect your printer to your computer
Your printer connects to your computer in one of two ways: a USB cable plugged directly into both devices, or over your WiFi network. USB is simpler if your computer is close to the printer. WiFi is more convenient if the printer is in another room.
For USB: plug the cable into the USB port on the back of the printer and into an available USB port on your computer. Windows and Mac will usually recognize it immediately. For WiFi: make sure your printer is connected to the same network as your computer. Most printers have a setup menu on their physical display screen where you can enter your WiFi password. Check your printer's manual if you are unsure how to access this menu.
After connecting, run the driver installation again or restart your computer. The printer should now appear as an available device.
Scan using the printer's physical buttons
Many printers have a Scan button on the front panel. This is the fastest way if you just want to scan without opening any software on your computer. Place your document face-down on the glass or in the automatic document feeder, press the Scan button, and the printer will send the file to a default folder on your computer — usually Documents or a Scans folder.
The first time you use this method, the printer may ask you to choose where to save the file. You can usually set this in the printer's settings menu or through the driver software on your computer. Check your printer's manual for the exact steps, as this varies by brand.
This method works best if you scan regularly and do not need to change settings like file type or quality. If you want more control, use the scanning software on your computer instead.
Scan using software on your computer
Open the scanning software that came with your printer driver. On Windows, this is often called Canon Scan Utility, HP Scan, Brother ControlCenter, or similar — search your Start menu for your printer brand plus "scan". On Mac, look in Applications > Utilities or search Spotlight for your printer brand.
Once the software is open, place your document on the scanner glass or in the feeder. The software will show a preview of what the scanner sees. Before you click the final Scan button, you can adjust settings: file type (PDF or JPG), quality (higher quality means larger file size), and where to save the file. Most people use PDF for documents and JPG for photos.
Click Scan, and the software will process the document and save it to your chosen folder. For multi-page documents, some software lets you scan all pages in one go if your printer has an automatic feeder. If your printer only has a flat glass, you will need to scan each page separately and combine them later.
Combine multiple scans into one file
If you scanned several pages separately, you can combine them into a single PDF file using free software. On Windows, use Microsoft Print to PDF (built into Windows 10 and later) or a free tool like PDFtk. On Mac, use the built-in Preview app: open all your scanned images in Preview, then go to File > Print and choose "Save as PDF".
Alternatively, many online tools let you upload multiple JPG or PDF files and merge them into one PDF. Search for "merge PDF online" and choose a site you trust. Upload your scanned pages in order, and download the combined file.
If your printer has an automatic document feeder, you can usually scan all pages at once without combining them later. Check your printer's manual to see if this feature is available on your model.
Troubleshoot when scanning does not work
If you press Scan and nothing happens, the printer and computer are not communicating. First, check that the USB cable is plugged in firmly on both ends, or that your printer is connected to WiFi and shows a connected status on its display screen. Restart both the printer and your computer.
If that does not work, reinstall the driver. Go to the manufacturer's website, download the latest driver for your printer model and operating system, and run the installer again. This fixes most scanning problems because the driver may have become corrupted or outdated.
If scanning still fails, check that your computer's firewall is not blocking the printer. On Windows, go to Settings > Privacy & Security > Firewall & Network Protection and look for your printer in the allowed apps list. On Mac, go to System Preferences > Security & Privacy > Firewall Options. If your printer is blocked, add it to the allowed list.
Frequently Asked Questions
What file type should I use when scanning documents?
Use PDF for text documents, forms, and anything you want to keep looking exactly the same. Use JPG for photos or images. PDF files are smaller for text and preserve formatting better. JPG is better for photos because it compresses image data more efficiently.
Can I scan directly to email or cloud storage like Google Drive?
Some newer printers have this built in — check your printer's settings menu or manual. If yours does not, scan to your computer first, then upload the file to Google Drive, Dropbox, or OneDrive using your web browser or desktop app. This takes an extra minute but works on any printer.
Why is my scan coming out blurry or too dark?
Clean the scanner glass with a soft, dry cloth — dust and smudges cause blurry scans. If the image is too dark, look for a brightness or contrast setting in your scanning software and increase it before scanning again. If the document itself is faint, try scanning at a higher quality setting.
Do I need to install software if my printer connects over WiFi?
Yes. WiFi connection and driver software are two different things. The WiFi lets the printer and computer find each other on the network. The driver software tells them how to communicate. You need both to scan.
What should I do if my printer does not have a Scan button?
Older printers or basic models may not have a physical Scan button. You can still scan using the software on your computer — open the scanning application, place your document on the glass, and click Scan in the software. This works the same way and gives you more control over settings.