Paste your HTML and choose to strip all attributes or just one named attribute (like class or style), and the tool removes them.
It rewrites every tag to just its element name, so <div class="x" id="y"> becomes <div>. Content and tag structure are preserved while all styling hooks and metadata attributes are stripped.
Yes. Enter an attribute name such as style, class or data-id and only that attribute is removed from all tags, leaving every other attribute in place.
Yes. Void and self-closed tags like <br/> are preserved as self-closing when attributes are removed, so the markup stays valid.