Scanning documents with your smartphone: the complete guide

These days you no longer need to buy an expensive scanner to digitize documents. With your phone's camera you can quickly and easily make professional-looking scans of contracts, receipts, ID documents and other important papers. In this article we explain step by step how to get the best result.

Why scan documents with your phone?

Scanning documents with your smartphone offers plenty of advantages over traditional scanners. First, you always have your phone with you, so you can digitize documents anywhere, anytime. Whether you're at the office, sitting at the kitchen table at home, or on your way to an appointment - your scanner is always within reach.

In addition, modern smartphones are equipped with high-quality cameras that can capture sharp images. Combined with smart software, these photos can be automatically converted into professional-looking PDF documents. The quality is often comparable to, or even better than, cheap desktop scanners.

Another big advantage is the direct integration with cloud storage services. Scanned documents can be saved to Google Drive, iCloud, Dropbox or OneDrive at the push of a button. That way you always have access to your important papers, no matter which device you use.

Built-in scanning features on iPhone and Android

Scanning with the iPhone

Apple has built an excellent document scanner into the Notes app. This feature is available on all iPhones with iOS 11 or later. To scan, open the Notes app, create a new note and tap the camera icon. Then choose 'Scan Documents'. The camera activates automatically and recognizes documents in view. As soon as the document is detected, the app automatically takes a photo, or you can press the shutter manually.

The iPhone automatically adjusts the perspective, corrects skew and improves contrast and brightness. After scanning, you can still adjust the corners manually if needed. You can scan multiple pages in a row to combine them into a single document.

Scanning with Android phones

On Android phones, Google Drive is the most commonly used method for scanning documents. Open the Google Drive app, tap the plus button and choose 'Scan'. The camera opens and you can start scanning right away. Just like on the iPhone, the document is automatically recognized and cropped.

Many Android manufacturers have also built their own scanning features into their camera app. Samsung, for example, has a 'Document' mode in the camera app that automatically detects documents and brings them into focus. Check the manual of your specific phone to find out which options are available.

Tips for the best scan quality

Lighting is essential

Good lighting makes the difference between a usable scan and an unreadable document. Make sure the lighting is even, without harsh shadows. Daylight is ideal, but avoid direct sunlight, which can cause reflections. If you scan indoors, place the document under a lamp, but make sure your phone doesn't cast a shadow over the paper.

Keep your phone steady

Motion blur is a common problem when scanning with your phone. Hold your phone with both hands and rest your elbows on the table for extra stability. Some apps have an automatic capture feature that waits until the camera is steady before taking the photo.

Mind the background

Place the document on a contrasting background so the edges are clearly visible. A white document scans best on a dark surface, while colored documents stand out better on a neutral background. Avoid busy patterns that can confuse the automatic detection.

Flatten the document

Curled or folded documents cause problems when scanning. Smooth the paper as flat as possible before you scan. With books or magazines, you can consider carefully pressing the pages flat, but be careful with valuable or fragile documents.

Best free apps for scanning documents

Besides the built-in features, there are several free apps that deliver excellent results. Microsoft Lens, formerly Office Lens, is a popular choice that integrates perfectly with Microsoft Office. The app automatically recognizes documents, business cards and whiteboards, and can even digitize handwritten text.

Adobe Scan is another excellent free option that works seamlessly with Adobe Acrobat. The app offers OCR functionality that makes scanned text searchable and editable. CamScanner has been one of the most popular scanning apps for years and offers all the basic features you need in the free version.

If you scan documents regularly and need advanced features, paid apps and subscriptions are available. Scanner Pro for iOS offers, among other things, automatic upload to the cloud, advanced OCR and workflow automation. Genius Scan has a one-time purchase price and offers excellent quality with handy organization features.

For business use there are also enterprise solutions that integrate with document management systems and offer extra security options. These are usually available through monthly or annual subscriptions.

Organizing and storing documents

Scanning is only the first step. At least as important is a good system for organizing your digital documents. Create folders for different categories such as finances, insurance, medical and work. Use clear file names with a date and description, for example '2024-03-15_Invoice_Ziggo.pdf'.

Also consider making regular backups of your important documents. Cloud storage is convenient but not infallible. A local backup on an external hard drive gives you extra certainty that your documents are safe.

Privacy and security

When scanning sensitive documents such as ID documents or financial papers, privacy is important. Check the privacy settings of the app you use and be careful with free apps that may collect data. Delete scanned documents from your phone after you have stored them safely, especially if you share your phone or it isn't properly secured.

Frequently asked questions

Which app is best for scanning documents with my phone?

For iPhone, the built-in Notes app is excellent. On Android, Google Drive is the best free option. For advanced features, Microsoft Lens and Adobe Scan are popular choices that work on both platforms.

Is the quality of a phone scan good enough for official documents?

Yes, modern smartphones make high-quality scans that are suitable for most official purposes. The resolution is often 200-300 DPI or higher, which is sufficient for contracts, forms and other documents.

How do I prevent shadows when scanning with my phone?

Make sure the lighting is even, from above or from the side. Avoid direct sunlight and make sure your phone or hand doesn't cast a shadow on the document. Preferably scan under a ceiling light or near a window with indirect light.

Can I scan multiple pages into one PDF?

Yes, virtually all scanning apps support scanning multiple pages into a single PDF file. Scan the pages one after another and combine them before you save or share the document.

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