- Login to Zoho Docs http://www.zoho.com/docs.
- Click on the settings icon at the top-right corner near your user name.
- From the drop down menu click on Settings.
- In the popped up new window, Click on 'Organization Profile' tab and click 'Customize Logo'.
- To change the logo click on browse button and select your desired logo from your local drive and click on 'Ok' and 'Save'.