5 mistakes to avoid when scanning documents using a smartphone

Scanning a document using a smartphone
(Image credit: Future)

In today’s digital age, smartphones have become more than just devices for making calls or browsing the internet; they serve as powerful tools with capabilities that extend into areas not initially thought of, such as document scanning. Whether preserving a copy of a receipt, submitting necessary paperwork, or keeping a digital record of notes, the convenience of using a smartphone cannot be understated. However, the process is not always straightforward, and mistakes can be made. 

5 mistakes to avoid when scanning documents using a smartphone

Here are five common errors to avoid to ensure your digital documents are of the highest quality possible.

# 1 Neglecting good lighting

When scanning documents with a smartphone, paying attention to lighting conditions is crucial. Good lighting is essential for a clear, readable scan. Natural light from a window can be a great choice, but if unavailable, ensure the room is well-lit with overhead or desk lamps. Avoid harsh direct light that can create glare or uneven shadows on the document. Position the document where the light is even and diffuse, reducing the likelihood of unwanted shadows. Poor lighting can result in a scan that is too dark, bright, or hard to read, so it’s crucial to ensure optimal lighting conditions for the best results.

#2 Ignoring background contrast

When scanning a document, ensuring enough contrast between the document and the background is essential. A common mistake is placing white paper on a light-colored surface, which causes the edges of the paper to blend with the background. This can make it difficult for the scanning app to accurately detect and crop the edges, potentially resulting in skewed or incomplete scans. Use a dark, non-reflective surface beneath your document for the best results. This contrast makes it easier for the app to recognize the document’s boundaries, ensuring a clean and precise scan.

#3 Overlooking the importance of resolution

Resolution is a critical aspect affecting the quality of your scanned document. Many users often need help accepting the default resolution settings. However, these default settings may only sometimes be suitable for the document. If the resolution is too low, the text might appear blurry or pixelated, making it easier to read. On the other hand, setting the resolution too high can result in unnecessarily large file sizes without a significant quality improvement. It's essential to consider the document’s intended use and try different settings to find the right balance between clarity and file size.

#4 Neglecting to clean the camera lens

It’s essential to keep your camera lens clean before scanning any documents. Even tiny particles like fingerprints, dust, and smudges can significantly affect the quality of your scans by blurring details and reducing contrast. To avoid this, take the time to gently clean the lens with a soft, lint-free cloth before each scan. This simple step can noticeably improve your digital documents’ clarity and overall quality.

#5 Failing to use document scanning apps effectively

Remember to use specialized document scanning apps rather than simply taking a photo with the camera app. These scanning apps offer features like automatic edge detection, perspective correction, and image enhancement, which can transform a poorly lit and skewed photo into a clean, straightened, and readable document. Invest time exploring different scanning apps, understanding their features, and learning how to use them to their full potential.

The best phone scanning apps

There are a lot of impressive scanning apps available on both the Apple App Store and Google Play

When scanning documents for digital file storage, you'll want to save them in a portable PDF file format. Adobe Scan is a dedicated scanning app developed by Adobe, the creator of the PDF file format. Expectations are high that this app can meet most user needs.

Adobe Scan runs as an app on your mobile device, whether it's Android or iOS. It uses your camera to capture a copy of a document and convert it into a PDF file. There is a preview option to optimize the file dimensions, and you can rotate, crop, and edit the color as required.

One of the most significant advantages of using Adobe Scan is its close integration with Adobe's other apps, including Adobe Acrobat and Adobe Fill & Sign. This means that you can scan documents into PDF format and edit, annotate, sign, and work collaboratively with the scanned documents.

Furthermore, Adobe Scan is a free app that can be downloaded and used. However, if you want additional features, an in-app subscription is available.

CamScanner is another app that allows you to use your mobile device's camera as a document scanner. It can scan documents, such as invoices and receipts, and convert them into PDF files. These files can be automatically uploaded to cloud services like Box, Google Drive, Dropbox, Evernote, and OneDrive.

Primarily designed for business users, the app lets you invite colleagues to view and comment on scans, although they need a user account. It also offers advanced editing features that allow you to add annotations and watermarks to documents for a more professional look. You can also add passcodes to documents for enhanced security.

The app is free to download on Android and iOS, but you can upgrade to a premium plan, which offers 10GB of storage, send document links with password protection, batch download documents, and more. The Premium Account can be paid for monthly or yearly, and the same options apply to the business version, which offers enhanced options for team collaboration.

You should also consider  Abbyy FineReader PDF, Genius Scan, and SwiftScan.

Summary

To significantly improve the quality of the documents you scan using your smartphone, avoid the abovementioned mistakes. Mobile technology has made document scanning more accessible and convenient than ever. However, the success of the outcome depends on attention to detail. Pay close attention to lighting, background, resolution, and cleanliness, and utilize document-scanning apps’ capabilities. These considerations will help you create high-quality digital documents anytime and anywhere.

Bryan M Wolfe

Bryan M. Wolfe is a staff writer at TechRadar, iMore, and wherever Future can use him. Though his passion is Apple-based products, he doesn't have a problem using Windows and Android. Bryan's a single father of a 15-year-old daughter and a puppy, Isabelle. Thanks for reading!

Read more
OCR on the scan app of the Onyx Boox Palma
Best document scanning app of 2025
Shelves filled with folders of paper.
Best scanning software of 2025
Two Android phones on a blue and green background showing document scanning
Google Drive gets major document scanning boost on Android to tempt you from Adobe Scan
Shooting with a Samsung Galaxy Ultra smartphone
I shot and edited this photo with my Samsung Galaxy Ultra and Adobe Lightroom Mobile – here's how you can get pro results with just your phone
A shelf filled with folder files
Best OCR software of 2025
A person using a smartphone.
Best PDF reader for Android of 2025
Latest in Pro
Racks of servers inside a data center.
Modernizing data centers: an efficient path forward
Dr. Peter Zhou, President of Huawei Data Storage Product Line
Why AI commonization is so important for business intelligent transformation and what Huawei’s data storage has to offer
Wix automation
The world's leading website builder aims to save businesses time with new tool
China
Juniper patches security flaws which could have let hackers take over your router
Hands typing on a keyboard surrounded by security icons
The psychology of scams: how cybercriminals are exploiting the human brain
Representational image depecting cybersecurity protection
GitLab has patched a host of worrying security issues
Latest in How Tos
tiktok
How to edit TikTok videos
Irish boxer TJ Doheny receives an undercard bout, ahead of the WBO super welterweight world title fight in March, 2023
Ball vs Doheny live stream: how to watch the boxing action from anywhere
 Facebook social media app logo on log-in, sign-up registration page
How to delete all your Facebook posts
Max Verstappen of Red Bull in testing for the 2025 season in Bahrain
Australian Grand Prix 2025: How to watch F1 First Practice race online from anywhere
Lunar eclipse
I'm a pro photographer – here's how I'm shooting the total lunar eclipse blood moon with my camera and phone
Photoshop CC logo on a screen
How to make an image background transparent in Photoshop