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Visual scan settings

Learn about the configurable settings for Visual scan.

Use the Visual scan settings to customize how your application is scanned. You can add delays, enable layout testing, set ignore thresholds, and enable advanced options to better simulate real-world rendering conditions.

Add delay

Choose a delay between page load and screenshot capture. You can set a delay of up to 30 seconds.

Layout Testing

Turn on the Layout Testing toggle while configuring your visual scan to check if UI elements are correctly positioned. Layout testing does not verify content changes.

Visual scan settings page showing the Add delay and Layout testing option

Configure settings after scan creation

After creating a scan, you can click the Visual scanner settings option to select the browsers, enable Compare with previous scan run option and other Advanced Options.

A sample Scan Summary page with the Visual scanner settings option highlighted

The visual scanner settings page highlighting the browsers available

Advanced options

  • Configure the diff sensitivity for your created project to customize the way visual changes appear in builds. For more information, see Diff sensitivity.

  • Use Intelli Ignore feature to recognize and ignore tiny, unimportant changes on webpage images. For more information, see Intelli ignore.

Currently, Percy’s Visual Scanner ignores dynamic elements such as carousels, banners, cookies, and advertisements by default.

The Advanced options screen with the Diff sensitivity options highlighted

Set Diff Ignore threshold

You can configure a diff ignore percentage threshold at the project level. This threshold represents the percentage of pixels that have changed. It ensures that only significant visual changes trigger alerts, while minor differences below the threshold are marked as unchanged, streamlining the review process and reducing false positives.

The Set Diff Ignore threshold section

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