Set up a default filter

Genius Scan attempts to filter your documents automatically based on their content:

• For black-and-white documents, Genius Scan will apply a grayscale filter.

• For color documents, Genius Scan will enhance the colors.

In this article, you will learn how to change the applied filter for a given page, how to specify a default filter to always enhance your scans in the same way, and what the different filters are at your disposal.

Change the filter for a page

iOS

1. Open a document and tap edit at the bottom of the screen.

1. Choose the appropriate filter from the filter preview row.

Android

1. Open a document and tap briefly on the page. Then tap filter at the bottom of the screen.

1. Choose the appropriate filter from the filter preview row.

Change the filter applied to all future scans

1. Go to Settings > General > Default Filter.

2. Choose a filter that will be applied by default when you scan a new document. Choose the Auto filter if you want Genius Scan to always apply the filter most suited to your documents.

What are the different filters available?

Genius Scan attempts to detect the best filter to apply to your document, but you can always change it. Note that the Black and White and Color filters include Soft and Strong variations:

• Soft: Perfect for low-contrast documents like handwritten notes or carbon copies, where preserving subtle details matters.

• Strong: Ideal for high-contrast needs like sharp text or clear invoices, removing shadows and boosting clarity.

Here are a few tips on which filter to use:

Filter	What Genius Scan does	Good for …
None	No filter will be applied	You want to keep the original untouched.
Black and White	Genius Scan clears up the background and turn the scan into black and white.	Mostly black and white documents such as receipts, contracts, official documents etc.
Color	Genius Scan clears up the background but keeps the colors.	Mostly black and white documents with some color: documents with letterheads, logos, whiteboards…
Photo	Genius Scan bumps up the colors so that the photo looks very vivid.	Postcards, photographs, paintings…
Dark background	Genius Scan clears the background and evens its color to contrast sharply with the light text.	Designed specifically for documents with light text on dark backgrounds.