When creating a custom content for CPQ Quote Template, html tags cannot be used since the final rendered content is in XML and hence the VF page needs to be in XML as well. Hence, tags like <img> will not work to render an image within the custom template content.
The following snippet of code can be used to render an image inside a VisualForce template content:
<block>
<external-graphic src="url-to-source-image"></external-graphic>
</block>https://help.salesforce.com/s/articleView?id=sales.cpq_template_content.htm&language=en_US&type=5
005321504

We use three kinds of cookies on our websites: required, functional, and advertising. You can choose whether functional and advertising cookies apply. Click on the different cookie categories to find out more about each category and to change the default settings.
Privacy Statement
Required cookies are necessary for basic website functionality. Some examples include: session cookies needed to transmit the website, authentication cookies, and security cookies.
Functional cookies enhance functions, performance, and services on the website. Some examples include: cookies used to analyze site traffic, cookies used for market research, and cookies used to display advertising that is not directed to a particular individual.
Advertising cookies track activity across websites in order to understand a viewer’s interests, and direct them specific marketing. Some examples include: cookies used for remarketing, or interest-based advertising.