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diff --git a/lib/util.cpp b/lib/util.cpp
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+/******************************************************************************
+ * Copyright (C) 2018 Kitsune Ral <kitsune-ral@users.sf.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "util.h"
+
+#include <QtCore/QRegularExpression>
+
+static const auto RegExpOptions =
+    QRegularExpression::CaseInsensitiveOption
+    | QRegularExpression::OptimizeOnFirstUsageOption
+    | QRegularExpression::UseUnicodePropertiesOption;
+
+/** Converts all that looks like a URL into HTML links */
+static void linkifyUrls(QString& htmlEscapedText)
+{
+    // regexp is originally taken from Konsole (https://github.com/KDE/konsole)
+    // full url:
+    // protocolname:// or www. followed by anything other than whitespaces,
+    // <, >, ' or ", and ends before whitespaces, <, >, ', ", ], !, ), :,
+    // comma or dot
+    // Note: outer parentheses are a part of C++ raw string delimiters, not of
+    // the regex (see http://en.cppreference.com/w/cpp/language/string_literal).
+    static const QRegularExpression FullUrlRegExp(QStringLiteral(
+            R"(((www\.(?!\.)|[a-z][a-z0-9+.-]*://)(&(?![lg]t;)|[^&\s<>'"])+(&(?![lg]t;)|[^&!,.\s<>'"\]):])))"
+        ), RegExpOptions);
+    // email address:
+    // [word chars, dots or dashes]@[word chars, dots or dashes].[word chars]
+    static const QRegularExpression EmailAddressRegExp(QStringLiteral(
+            R"((mailto:)?(\b(\w|\.|-)+@(\w|\.|-)+\.\w+\b))"
+        ), RegExpOptions);
+
+    // NOTE: htmlEscapedText is already HTML-escaped! No literal <,>,&
+
+    htmlEscapedText.replace(EmailAddressRegExp,
+                 QStringLiteral(R"(<a href="mailto:\2">\1\2</a>)"));
+    htmlEscapedText.replace(FullUrlRegExp,
+                 QStringLiteral(R"(<a href="\1">\1</a>)"));
+}
+
+QString QMatrixClient::prettyPrint(const QString& plainText)
+{
+    auto pt = QStringLiteral("<span style='white-space:pre-wrap'>") +
+            plainText.toHtmlEscaped() + QStringLiteral("</span>");
+    pt.replace('\n', "<br/>");
+
+    linkifyUrls(pt);
+    return pt;
+}