Allow me to share some information about printing signatures on checks in QuickBooks Online, attainmentcb.

Since QuickBooks Desktop and QuickBooks Online are two separate platforms, the availability of functionalities may differ for each program.

For now, we're unable to print checks from QuickBooks Online. You'll want to use a third-party app that offers this feature.

To check for apps compatible with QuickBooks:

1. Go to Apps.
2. Click Finds Apps.
3. Type in the Search for an app field.
4. If you have found the app you're looking, just click Get App Now.

Also, having this feature in QuickBooks Online is indeed a great idea and I’d appreciate it if you send your product suggestions straight to our Developers for consideration in future updates.

To send your feedback:

1. Go to the Gear icon.
2. Choose Feedback.
3. Provide your comments and select Next.
4. Select Skip and send a message.

Feel free to review this article for more insight when printing checks in QuickBooks Online: Print a check in QuickBooks Online.

Please don't hesitate to send a reply if there's any additional questions aside on printing signatures on checks in QuickBooks Online. Have a great day!