Hey @AccountingCC,
Currently, you can't attach links to display on the reports.
As a workaround, you can download your attachments from QuickBooks Online (QBO) and save them to an online file sharing service.
Once done, you'll need to export your report to MS Excel. Then, add the hyperlinks of your saved attachments online.
Also, I recommend sending feedback to our engineers with your idea. This way, they can consider and add it to future product updates that can benefit all QuickBooks users.
Please leave a comment below or post again if you have other questions.