How can I delete an attachment i have put on an estimate?

Hello there, cozmarie.

Deleting an attachment from an estimate is easy. Let me show you how:

1. Go to the Gear icon.
2. Select Attachments. 
3. Review all the added attachments on the estimate.
4. To remove that on the transactions, you'll need to click the drop-down arrow. 
5. Then, select Delete.
   
   
6. Click Yes to confirm.

That's it. You can then go back to the estimate you created and double-check if the attachment is removed successfully.

You can check these articles for additional information:

•  Attachments in QuickBooks Online
• Create and send estimates in QuickBooks Online
• Manage invoices.

Let me know if you have more concerns. I'd be glad to help and answer your queries. Take care and stay safe.