How to Scan a Document With Your Phone or Scanner

The fastest way depends on what you have

You can scan a document three ways: with a dedicated scanner, with your phone's camera and a scanning app, or with a multifunction printer that has a scanner built in. A phone works for most everyday documents — receipts, letters, forms — and the image quality is usually good enough for email or storage. A dedicated scanner is faster if you have many pages and produces cleaner results. A printer with a scanner sits in the middle: slower than a phone for one or two pages, faster than a phone for a stack.

The actual steps change based on which device you use, but the principle is the same: position the document flat under good light, capture the image, and save it as a PDF or image file. Most people start with their phone because they already have it, and that works fine for most situations.

Key Takeaways

Phone scanning works well for single documents and requires only a free app like Google Drive, Microsoft Lens, or Adobe Scan — no hardware purchase needed.
Position the document flat on a plain background with even lighting, and hold your phone directly above it rather than at an angle.
Dedicated scanners are worth the cost only if you regularly scan more than five or ten pages at a time.
Multifunction printers can scan to your computer or email, but the process takes longer than a phone and requires setup.
Save your scans as PDF files if you need them to look official or be read by many different programs.

Scanning with your phone

Download a scanning app — Google Drive, Microsoft Lens, or Adobe Scan are all free and work on both iPhone and Android. Open the app and point your phone's camera at the document. The app will show you a preview and let you adjust the edges if the document is not perfectly centered in the frame. Tap the button to capture, and the app will convert the image to a PDF or image file automatically.

The key to good results is lighting and angle. Place the document on a flat surface — a table or desk — and hold your phone directly above it, parallel to the page. Avoid shadows from your hand or body. If the room is dim, turn on overhead lights or use a desk lamp. The app will usually detect the document edges and crop automatically, but you can adjust them by hand if needed.

After you capture the image, the app will ask where to save it. Google Drive saves to your Google account in the cloud. Microsoft Lens saves to OneDrive. Adobe Scan saves locally to your phone or to the cloud. Choose based on where you want to access the file later — if you need it on your computer, cloud storage is easier than emailing it to yourself.

Scanning with a dedicated scanner

A dedicated scanner — a device that sits on your desk and plugs into your computer — is the fastest option if you have many pages. Place the document face-down on the glass, close the lid, and press the scan button on the device. The scanner will pull the paper through or capture the image and send it to your computer as a file. Most scanners come with software that lets you choose the file format (PDF, JPEG, or TIFF), the resolution (measured in DPI, or dots per inch), and where to save the file.

For everyday documents like letters or forms, 300 DPI is enough. For photos or documents you plan to print, use 600 DPI. Higher settings make larger files and take longer to scan. If the scanner has an automatic document feeder — a tray that holds a stack of pages — you can load 20 or 30 pages at once and walk away while it scans them all.

Scanners range from $50 to $300 depending on speed and features. A basic model that scans one page at a time is fine for home use. If you scan regularly, a scanner with an automatic feeder saves time and frustration.

Scanning with a printer that has a scanner

Many home printers include a scanner — look for the glass panel on top or a document feeder. Place the document on the glass or in the feeder, then use the printer's buttons or software on your computer to start the scan. The printer will send the file to your computer, usually to a folder called "Scans" or directly to an app like Windows Fax and Scan.

The process is slower than a phone for one or two pages because you have to walk to the printer, position the document, and wait for the file to transfer. But if your printer is already set up and connected to your computer, it is a straightforward option. Check your printer's manual or the manufacturer's website to find the scanning software — it is usually called something like "Scan to Computer" or "Printer Utility."

Choosing the right file format

Save your scans as PDF if you want them to look the same on every device and program. PDF files preserve the layout, fonts, and images exactly as they appear on the original document. They are also smaller than image files and work on phones, computers, and tablets without special software.

Save as JPEG or PNG if you need to edit the image later — for example, if you want to crop it or adjust the brightness. These formats are also better if you plan to upload the scan to a website that expects an image rather than a document. TIFF is rarely needed unless you are archiving documents professionally.

Getting clean, readable scans

The most common problem is poor lighting or an angled photo. If your scan looks dark or blurry, try again with better light — move closer to a window or turn on a bright lamp. If the text is hard to read, increase the resolution or DPI setting. For phone scans, most apps let you adjust brightness and contrast after you capture the image but before you save it.

If you are scanning a document with colored text or images, make sure the app or scanner is set to color mode, not black and white. Black and white mode is faster and creates smaller files, but it can make colored text disappear or look wrong. Check the preview before you save.

For documents with multiple pages, scan each page separately with your phone, or use the automatic feeder on a dedicated scanner or printer. Most scanning apps let you add multiple pages to a single PDF file, so you end up with one document instead of many separate files.

Storing and organizing your scans

Create a folder system on your computer or cloud storage to keep scans organized. Use names that describe the document — "Tax Return 2024" or "Lease Agreement" — rather than generic names like "Scan001." If you scan many documents, add the date to the filename so you can find the right version later.

Cloud storage like Google Drive, OneDrive, or Dropbox makes it easy to find scans on any device. If you prefer to keep files on your computer, create a dedicated folder and back it up to an external drive or cloud service regularly. Scans are usually small files, so storage is not a problem unless you scan hundreds of pages.

Frequently Asked Questions

Can I scan a document with just my phone camera, or do I need an app?

A regular camera photo works, but a scanning app produces much better results. Apps automatically detect the document edges, correct the angle, and adjust brightness so the text is readable. They also convert the image to PDF format, which is easier to share and store. Free apps like Google Drive, Microsoft Lens, and Adobe Scan take about 30 seconds to download.

What resolution should I use for a scan I plan to print?

Use 300 DPI for most printed documents. If you are scanning a photo or a document with fine details, 600 DPI gives better quality. Anything higher than 600 DPI is rarely necessary for home use and just makes the file larger and slower to scan.

How do I scan both sides of a document?

Scan the front side first, then flip the document over and scan the back. Most scanning apps let you add multiple images to a single PDF file, so you end up with one document that includes both sides. If your scanner has an automatic document feeder, check the manual — some models can scan both sides automatically if you load the pages correctly.

Can I scan a document directly to email?

Some multifunction printers have a "scan to email" button that sends the file directly to an email address. Check your printer's manual to see if this feature is available. With a phone app, you scan to your phone first, then attach the file to an email. It takes one extra step but gives you a copy on your phone as well.

What should I do if my scan is blurry or hard to read?

Rescan with better lighting — move to a window or turn on a bright lamp. Make sure your phone or scanner is held parallel to the document, not at an angle. If you are using a phone, clean the camera lens first. Increase the resolution or DPI setting if your device allows it. Most scanning apps also let you adjust brightness and contrast after you capture the image.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.