The basic process: scanner, software, and where the file lands
To scan a document to your computer, you connect a scanner to your computer, open the scanning software, place the document in the scanner, and save the resulting image file to a folder you can find later. The whole process takes two to five minutes once the scanner is set up. Most scanners come with software already installed, or Windows and Mac both have built-in scanning tools that work with any scanner.
The file you create is usually a PDF (a format that looks the same on any computer) or a JPG image file. Where that file lands depends on which software you use — some scanners save to a specific folder by default, while others let you choose. Knowing where your scans go is the most common stumbling block, so we'll cover that in each method below.
Key Takeaways
- Most scanners come with their own software, but Windows and Mac have free built-in tools that work with any scanner without installation.
- You need to know where your scanned file will be saved — usually the Documents folder or a folder the scanner software creates — so you can find it later.
- A flatbed scanner (the kind with a glass top) works best for single pages and photos; a sheet-fed scanner works faster for stacks of pages.
- Scanning at 300 DPI (dots per inch) is standard for documents you want to read or print; 150 DPI is fine for archiving, and 600 DPI is only needed for very small text.
Using the scanner software that came with your device
If your scanner arrived with a disc or you downloaded software from the manufacturer's website, that software is usually the fastest route. Open the program (look for a name like "Canon Scan", "Epson Scan", "HP Scan", or "Brother ControlCenter"), and you'll see a preview window and a few buttons. Place your document face-down on the glass, close the lid, and click the button that says "Scan" or "Preview".
Before you scan, look for a setting called "File Type" or "Format" — choose PDF if you want one file that's straightforward to email, or JPG if you want an image. Then look for "Resolution" or "DPI" — 300 is the standard for documents. Once you click "Scan", the software will show you what it captured. If it looks right, click "Save" and choose where the file goes. Write down that folder name (usually "My Scans" or "Documents") so you know where to find it.
The downside of manufacturer software is that it's different for every brand, so the buttons and menus won't match these instructions exactly. If you get stuck, search for "[Your scanner brand] how to scan" and you'll find the exact steps for your model.
Scanning with Windows built-in tools (no software needed)
If you don't have the original software or prefer not to install it, Windows 10 and Windows 11 both have a free scanning tool built in. Plug in your scanner, place your document on the glass, then open the Windows Start menu and search for "Windows Scan". Click the app when it appears.
Click the camera icon or "Scan" button. Windows will detect your scanner automatically. You'll see a preview of what's on the glass. If it looks right, click "Save" — Windows will ask you where to put the file and what to name it. By default it saves to your Documents folder, which is usually the easiest place to find it later. The file will be a JPG image.
Windows Scan is simpler than manufacturer software but offers fewer options — you can't easily change the resolution or file type. If you need to scan at a specific DPI or save as PDF, use the manufacturer's software instead.
Scanning on a Mac without extra software
Mac computers have a scanning tool built into the system. Plug in your scanner, place your document on the glass, then open Finder (the blue face icon in your dock). Click "Applications" in the sidebar, then open "Image Capture".
Your scanner should appear in the left panel. Click it, and you'll see a preview of what's on the glass. At the bottom of the window, choose where you want the file saved — usually "Documents" — and what format you want (PDF or JPEG). Click "Scan" and the file will appear in that folder. Like Windows Scan, Image Capture is straightforward but doesn't offer advanced options like DPI adjustment.
Understanding resolution (DPI) and file type
DPI stands for dots per inch — it's how fine the detail is in your scanned image. For most documents you want to read or print, 300 DPI is the standard and looks sharp. If you're scanning old family photos or documents with small text, 600 DPI captures more detail but makes the file much larger. If you're just archiving documents you'll never print, 150 DPI saves space and is still readable on screen.
File type matters for how you'll use the scan. PDF is best if you want to email the document, print it, or share it — it looks the same on any computer and most people can open it. JPG is best if you want to edit the image in a photo program or insert it into another document. Some scanner software lets you save as TIFF, which is higher quality but creates very large files that most people don't need.
Fixing common scanning problems
If the scan comes out dark or faded, look for a "Brightness" or "Contrast" slider in your scanning software and adjust it before you scan again. If the image is crooked, make sure the document is straight on the glass — most scanners have guides or marks to help you line it up. If the scanner doesn't appear in your software, unplug it and plug it back in, then restart the scanning program.
If you're scanning multiple pages and the software only captures one, check whether your scanner has an automatic document feeder (ADF) — the slot at the top that pulls pages through automatically. If it does, load your stack of pages there instead of using the flatbed glass. If your scanner doesn't have an ADF, you'll need to scan each page one at a time and combine them into a single PDF later using free tools like ILovePDF or Smallpdf.
Where your scanned files actually go
This is where most people get lost. When you click "Save", your scanning software asks where to put the file, but the default location is different for every program. Some save to a folder called "My Scans" on your desktop, some to a "Documents" subfolder, and some to a folder buried inside the scanner software's own directory. The best habit is to choose "Documents" or "Desktop" when you save, so you know exactly where to look.
Once you've saved a few scans, open File Explorer (Windows) or Finder (Mac) and navigate to that folder to confirm the files are there. If you can't find them, search for the filename you gave the scan — Windows and Mac both have search tools that will locate it. After you find it once, you'll know where to look next time.
Frequently Asked Questions
Can I scan directly to email or cloud storage like Google Drive?
Some scanner software has this built in — check your manufacturer's app for an option to "Scan to Cloud" or "Scan to Email". If yours doesn't, scan to your computer first, then open your email or cloud storage and attach or upload the file manually. This takes 30 seconds longer but works with any scanner.
What if my scanner isn't showing up in the software?
Unplug the scanner from the USB cable, wait 10 seconds, and plug it back in. Then close and reopen your scanning software. If it still doesn't appear, restart your computer. If you're using Windows Scan or Image Capture and the scanner still won't show up, install the manufacturer's software from their website instead — it usually has better driver support.
How do I combine multiple scanned pages into one PDF?
If you scanned each page separately, you'll have multiple files. Free websites like ILovePDF, Smallpdf, or PDFtk let you upload your JPG or PDF files and merge them into a single PDF. Upload them in order, click "Merge", and read the combined file. This takes about two minutes.
Is 300 DPI always necessary?
No. 300 DPI is standard for documents you want to print or read closely. If you're scanning a bill or contract just to keep a record, 150 DPI is fine and uses half the storage space. Only use 600 DPI if the original document has very small text or fine details you need to preserve.
Can I scan directly to my phone or tablet instead of my computer?
Yes, if your scanner has Wi-Fi (not just USB). Check your scanner's manual or manufacturer website to see if it supports mobile scanning. If it does, read the manufacturer's mobile app, connect your phone to the same Wi-Fi network as the scanner, and scan from the app. USB-only scanners require a computer.