[Windows/macOS] The scanning speed is very slow

Is the USB cable of the ScanSnap connected to a USB 1.1 port?

When you connect the USB cable of the ScanSnap to a USB 1.1 port, the scanning speed slows down.

Connect the USB cable to a USB 3.2 Gen 1 x 1, USB 3.0, or USB 2.0 port.

When you are using a USB hub, connect the ScanSnap directly to the computer via a USB cable.

Note that you can check the type of USB port to which the USB cable is connected in the following procedure:

1. Display the scan window of ScanSnap Home on the computer.

   • To display the scan window

2. Select [Preferences] in the menu that appears when you click at the top of the scan window to display the preferences window.

3. Select the ScanSnap that you are using from the list of ScanSnap units that is located in [Scanner information] in the [Scanner] tab.

4. Click the [Details] button to display the [Details] window.

5. In [Connection type], check the type of USB port to which the USB cable is connected.

Did you start the scan before the computer was completely started up, for instance, right after startup or logon?

Avoid scanning right after startup or logon, and wait until the startup of the computer is complete.

Is [Excellent] selected for the image quality level in the scan settings?

If you select [Excellent] for the image quality level in the scan settings, it may slow down the speed of scanning documents.

If you scan a document with the setting configured to detect a document type automatically, and with [Excellent] selected for the image quality level in the scan settings for one of the four document types ("Documents", "Business Cards", "Receipts" or "Photos"), the scanning speed for the other types of documents that [Excellent] is not selected for slows down.

If there is a specific document that you want to scan with [Excellent] selected, create a profile with a document type selected which is suitable for the specific document, and with [Excellent] selected for the image quality level.

For details about how to create a new profile and how to change the profile settings, refer to ScanSnap Help.

The speed of scanning documents may slow down depending on your system environment.

If the computer's CPU performance is low or the memory is insufficient, changing the scan settings may improve the scanning speed.

For example, when documents are scanned with the setting that creates a searchable PDF file, it may take time to link to the application because the characters on the scanned image need to be recognized.

If necessary, change the settings in the following procedure:

1. Display the scan window of ScanSnap Home on the computer.

   • To display the scan window

2. Select the profile that you are using from the profile list.

3. Click the [Edit profiles] button to display the [Edit profiles] window.

4. If necessary, change the other settings below.

   • Changing the setting so that the orientation of the images are not automatically corrected

     Select another option other than the options listed below for [Rotation] in [Scan settings].

     • [Automatic]

     • [Automatic (by face detection)]

   • Changing the setting so that skewed character strings are not automatically corrected

     1. Click the [Detailed settings] button in [Scan settings] to display the [Detailed settings] window.

     2. Click the [Option] button in the [Scan] tab to display the [Scanning options] window.

     3. Clear the [Deskew by document text] checkbox.

   • Changing the setting so that PDF files are not converted to searchable PDF files

     1. Click the [Option] button in [File format] to display the [PDF file option] window.

     2. Clear the [Convert to Searchable PDF] checkbox.