Get started with Accessibility Scanner

When you design and develop an Android app, Accessibility Scanner can help you identify opportunities to improve your app for users.

Accessibility Scanner scans your screen and provides suggestions to improve the accessibility of your app, based on the following:

  • Content labels
  • Touch target size
  • Clickable items
  • Text and image contrast

Note: Accessibility Scanner isn't a replacement for manual testing and doesn't guarantee an app's accessibility.

Step 1: Install and turn on Accessibility Scanner

Accessibility Scanner is available for phones and tablets with Android 6.0 and above. Learn how to check your Android version.

  1. Download Accessibility Scanner from Google Play.
  2. Open Accessibility Scanner Accessibility Scanner.
  3. Follow the prompts to turn on Accessibility Scanner in your device's Settings app.
  4. Tap Accessibility, then tap Accessibility Scanner.
  5. Tap Use service.

To turn off Accessibility Scanner, return to Settings and then Accessibility and then Accessibility Scanner.

Step 2: Scan your app

You can scan a snapshot of your app, or you can scan a series of screens as you interact with your app.

Scan a recording

You can scan a workflow or task within your app. With this option, Accessibility Scanner records and analyzes the elements on your screen as you use and navigate through your app.

Note: The recording only includes screenshots (not video or audio). The recording stays on your device and is never shared with Google.

To scan a recording:

  1. Open your app.
  2. Tap the Accessibility Scanner button .
  3. Tap Record Video camera.
  4. Start using your app. If you go to another app, the recording pauses until you return.
  5. To stop recording, swipe down from the top of your screen to open your notifications. Tap Accessibility Scanner is recording, then tap Stop .

Scan a snapshot

To scan a single screen of your app:

  1. Open your app.
  2. Tap the Accessibility Scanner button .
  3. Tap Snapshot Choose image.

Review results of a scan

After you scan a recording or snapshot, Accessibility Scanner displays one or more screenshots of your app. To review the results:

  • Within a screenshot, results of the scan are outlined in orange rectangles. To view details, tap the outlined area.  If a screen has multiple results, navigate to the next result by tapping Next Next.
  • To view a complete list of results from all the screenshots, tap the List , then choose View by screen or View by category.
  • To share results by sending a zip file, tap Share .

If you scanned a recording or have more than one screenshot:

  • To navigate between screenshots, tap a screenshot in the carousel at the top of your screen, or, tap Next .
  • To view a grid with all the screenshots, tap Library .

Note: If a resource name is too wide to fit on your screen, touch and hold the resource name. You can then scroll to see the entire name. 

Scanning secure windows

If your app has a window that is declared "secure" (using WindowManager.LayoutParams.FLAG_SECURE) Accessibility Scanner can't capture an image of the screen or check color contrast. For these windows, Accessibility Scanner shows a black screen after scanning your app. However, you can still read the scan results for other opportunities.

Change contrast and touch target size thresholds

You can change the thresholds that Scanner uses for contrast ratio and touch target size.

  1. On your device, go to the Apps section.
  2. Tap Accessibility Scanner Accessibility Scanner.
  3. Tap Settings .
  4. View or change the following settings:
    • Contrast ratio: Set a new minimum threshold for text and image contrast.
    • Touch target size: Set a new minimum threshold for touch target size.

Share scan results

You can share complete results or an individual item with other people, such as teammates. To share results, follow these steps:

  1. After scanning your app, tap Share .
  2. Choose how you want to share the zip file with the results and screenshots.

Note: To share results for an individual item, tap Share while viewing the item.

View or delete past scans

To view or delete past scans: 

  1. On your device, go to the Apps section.
  2. Tap Accessibility Scanner Accessibility Scanner.
  3. The History displays a list of scans with their times and dates. 
  4. To see details, tap a scan.
  5. To delete the scan, tap More More   and then Delete.
  6. In the confirmation dialog, tap Delete.

Help and feedback

To find help documentation or send feedback about Accessibility Scanner, select Help and feedback in the app.