<spacer size="">In HTML AttributesDisclosure: Your support helps keep the site running! We earn a referral fee for some of the services we recommend on this page. Learn moreAttribute of<spacer> HTML TagDo not use. The <spacer> element is obsolete in HTML 5.Claire BroadleyClaire is seasoned technical writer, editor, and HTML enthusiast. She writes for HTML.com and runs a content agency, Red Robot Media.