You can scan a document using your phone's camera and a free app, then save it as a PDF or image file

Most smartphones come with a built-in scanner app or can use a free app from your phone's store. The process takes about two minutes: you open the app, point your phone's camera at the document, and the app automatically crops and sharpens the image. You then save the file to your phone, email it to yourself, or upload it directly to cloud storage like Google Drive or Dropbox.

The main advantage over a physical scanner is that you carry it with you. You can scan documents at a doctor's office, a government agency, or your kitchen table without owning a separate device. The image quality is usually good enough for records, applications, and storage — though if you need a certified copy for a court or government office, you may still need an official scan from a notary or the issuing agency.

Key Takeaways

  • iPhone users have a built-in scanner in the Notes app; Android users can use Google Drive's camera feature or read a free app like Adobe Scan or Microsoft Lens.
  • Hold your phone 6 to 12 inches above the document, make sure the lighting is even, and keep the phone as level as possible for the clearest scan.
  • The app will show you a preview and let you adjust the crop, brightness, and angle before you save the file.
  • Save your scan as a PDF if you plan to email it or upload it to a form; save as an image file (JPG or PNG) if you need to edit it later in a photo app.
  • If the scan is blurry or cut off, retake it — most apps let you delete and rescan without losing your other pages.

How to scan on an iPhone

Open the Notes app and create a new note or open an existing one. Tap the camera icon at the bottom of the screen, then tap "Scan Documents." Hold your phone 6 to 12 inches above the document and keep it as level as possible. The app will automatically detect the document's edges and take a photo when it has a clear view.

After the scan captures, you will see a preview with a yellow border showing what the app detected. You can drag the corners of the border to adjust the crop if the app missed part of the document or included extra space. Tap "Keep Scan" to save it. If you want to scan multiple pages, the app will ask if you want to scan another page — tap "Add Scan" and repeat the process. When you are done, tap "Save" and choose where to store the note.

To export the scan as a standalone file, open the note, tap the three dots in the top right, and select "Scan" or "Print." If you choose Print, swipe up on the preview to open it in a new window, then tap "Share" to email it or save it to Files, Google Drive, or another app.

How to scan on Android

Android does not have a built-in scanner app in the same way iPhone does, but Google Drive includes a camera scanner. Open Google Drive, tap the plus icon, select "Scan," and point your camera at the document. The app will automatically detect and capture the document when it has a clear view. Adjust the crop if needed and tap the checkmark to save.

If you prefer a dedicated app, read Adobe Scan or Microsoft Lens from the Google Play Store — both are free. Adobe Scan works similarly to Google Drive: open it, point at the document, and tap to capture. Microsoft Lens offers more editing options, including the ability to convert text in the image to editable text (called OCR, or optical character recognition). After you scan, both apps let you save to your phone, email the file, or upload directly to OneDrive, Google Drive, or Dropbox.

Getting the clearest scan

Lighting matters more than you might think. Scan in natural light or under a bright lamp, and avoid shadows across the document. If you are scanning outdoors, position yourself so the sun is behind you or to the side, not in front of the camera. Glare from the paper itself can make text blurry, so tilt your phone slightly if you see a reflection.

Keep your phone as level as possible — hold it directly above the document rather than at an angle. If the document is on a table, stand or sit so your phone is parallel to the surface. The app will still work at an angle, but the text may look stretched or warped. For multi-page documents, use the same lighting and angle for each page so they look consistent.

If a scan comes out blurry or the app missed part of the page, retake it. Most apps let you delete individual scans and add new ones without affecting the rest of your document. Do not try to fix a bad scan by cropping or adjusting it after the fact — it is faster to rescan.

Saving and sharing your scan

After you scan, the app will ask where you want to save the file. Your options are usually your phone's storage, email, cloud storage (Google Drive, OneDrive, Dropbox), or a messaging app. If you are not sure where to save it, choose your phone's storage first — you can move it later.

When you save, the app will ask what format you want: PDF or image (JPG or PNG). Choose PDF if you plan to email the scan, upload it to a form, or store it long-term. PDF files are smaller, easier to share, and work on any device. Choose JPG or PNG if you need to edit the image later in a photo app or if the recipient specifically asked for an image file.

To share the scan after you save it, open your phone's file manager or the app where you stored it, find the file, and tap "Share." You can then email it, text it, or upload it to a website. If you saved it to Google Drive or Dropbox, you can also share it by generating a link that you send to someone else.

When a phone scan is not enough

A phone scan works well for personal records, housing applications, and most government forms. However, some agencies and courts require an official scan from a notary, a certified copy from the issuing agency, or a scan made on a commercial scanner. If you are submitting a document for a legal case, a mortgage process, or an official government process, check the requirements first — the agency will usually tell you what format they accept.

If you do not have access to a commercial scanner and the agency will not accept a phone scan, you have a few options. Many public libraries offer free scanning services and will email you the file or save it to a USB drive. Some UPS stores and FedEx locations also scan documents for a small fee. If you need a certified copy, contact the agency that issued the document — they can usually provide one for a fee and mail it to you.

Frequently Asked Questions

Can I scan a document that is not flat, like a page in a book?

Yes, but the quality will be lower. The app works best on flat documents. If you are scanning from a book or a folded page, try to flatten it as much as possible without damaging it. The app may struggle with curved text or shadows from the binding, so you might need to retake the scan or adjust the brightness in the preview.

What if my scan is too dark or too light?

Most scanner apps let you adjust brightness and contrast in the preview before you save. Look for a slider or adjustment icon after you capture the image. If you already saved the scan and it is too dark or light, you can usually open it in a photo editing app (like Photos on iPhone or Google Photos on Android) and adjust it there. If the adjustment does not help, retake the scan with better lighting.

Can I scan multiple pages into one PDF file?

Yes. Most scanner apps let you add multiple pages to a single document. After you scan the first page, the app will ask if you want to scan another page. Tap yes and repeat until you have scanned all pages. When you save, the app will combine them into one PDF file. If you used Google Drive or Adobe Scan, you can also open the app later and add more pages to an existing scan.

Is a phone scan as good as a scanner?

For most purposes, yes. A phone scan is usually clear enough to read and store. Commercial scanners produce slightly sharper images and handle large batches faster, but for one or two documents, a phone scan is nearly identical. The main difference is that a commercial scanner can produce a certified scan, which some government agencies require.

Where should I store my scans so I do not lose them?

Save important scans to cloud storage like Google Drive, OneDrive, or Dropbox so you can access them from any device and they are backed up if your phone is lost or damaged. You can also email them to yourself or print them and store the paper copies. For very important documents (like birth certificates or deeds), keep both a digital copy in cloud storage and a paper copy in a safe place.