I know, but the browser only finds text in tiddlers that are open. These first have to be found. I have abandoned the iframes approach and instead now copy/paste the generated html, then use my custom search function and its Open button (Search formatted text) to open the tiddlers found and finally the browser’s Ctrl-F find. It would be useful if on Open Tiddlywiki could highlight the search text in the search result tiddlers.