A Case for poster on Canvas
Read OriginalThis technical article argues that the HTML <canvas> element lacks a declarative way to show a static visual representation, unlike the <video> element's 'poster' attribute. This causes problems for web archiving, user experience (blank screens during load), and Core Web Vitals. The author proposes adding a 'poster' attribute to <canvas> to display a placeholder image before JavaScript draws, which would also be captured when pages are saved, preserving content for archives and improving perceived performance.
Comments
No comments yet
Be the first to share your thoughts!
Browser Extension
Get instant access to AllDevBlogs from your browser