Expired50% confidenceFactExact time
html2canvas cannot by default penetrate Shadow DOM boundaries to read the styles and layout information of internal elements.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Related Claims
UnverifiedContent inside a Canvas is completely invisible to the browser's DOM tree, with no semantic structure, accessibility tree nodes, or text selection capability.70% similarUnverifiedThe PageAgent framework is based on a plain-text architecture of DOM elements at its core, is unable to process image elements, and understands pages by reading text content, attributes, and hierarchical relationships.69% similarUnverifiedDOM树中的文本节点在合并环节已固定，视觉上不可见的操作只发生在渲染阶段后半段，不影响DOM文本节点本身的存在68% similarUnverifiedThe core principle of html2canvas is to re-draw page elements on a Canvas by parsing the DOM tree and CSSOM, rather than taking a real screenshot.66% similar
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