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    <p>Based on suggestion by Dean and the mentioned example, here's the "solution" to the problem. Keep in mind that it's a very expensive one due mainly to the parsing of HTML string (~160ms on quad-core/16GB RAM MBPr). This solution also handles both valid and invalid HTML. Keep in mind there is a little hack around the limitation of JSOUP to make sure extra tags are not included to make the end result a valid HTML. I really hope someone can come up with a better solution, but here it is for now.</p> <pre><code>public static String makeHTML(String htmlText){ boolean isValidDoc = false; if((htmlText.contains("&lt;html") || htmlText.contains("&lt;HTML")) &amp;&amp; (htmlText.contains("&lt;head") || htmlText.contains("&lt;HEAD")) &amp;&amp; (htmlText.contains("&lt;body") || htmlText.contains("&lt;BODY"))){ isValidDoc = true; } Document doc = Jsoup.parseBodyFragment(htmlText); final String urlRegex = "\\b(https?|ftp|file)://[-a-zA-Z0-9+&amp;@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&amp;@#/%=~_|]"; final List&lt;TextNode&gt; nodesToChange = new ArrayList&lt;&gt;(); final List&lt;String&gt; changedContent = new ArrayList&lt;&gt;(); NodeTraversor nd = new NodeTraversor(new NodeVisitor() { @Override public void tail(Node node, int depth) { if (node instanceof TextNode) { TextNode textNode = (TextNode) node; Node parent = node.parent(); if(parent.nodeName().equals("a")){ return; } String text = textNode.getWholeText(); List&lt;String&gt; allMatches = new ArrayList&lt;String&gt;(); Matcher m = Pattern.compile(urlRegex) .matcher(text); while (m.find()) { allMatches.add(m.group()); } if(allMatches.size() &gt; 0){ String result = text; for(String match : allMatches){ result = result.replace(match, "&lt;a href=\"" + match + "\"&gt;" + match + "&lt;/a&gt;"); } changedContent.add(result); nodesToChange.add(textNode); } } } @Override public void head(Node node, int depth) { } }); nd.traverse(doc.body()); int count = 0; for (TextNode textNode : nodesToChange) { String result = changedContent.get(count++); Node newNode = new DataNode(result, textNode.baseUri()); textNode.replaceWith(newNode); } String processed = doc.toString(); if(!isValidDoc){ int start = processed.indexOf("&lt;body&gt;") + 6; int end = processed.lastIndexOf("&lt;/body&gt;"); processed = processed.substring(start, end); } return processed; } </code></pre>
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