webView.getSettings().setDefaultFontSize(fontSizeSp);
try {
// No way to get pure UTF-8 data into WebView
+ // Cannot use StandardCharsets due to older Android.
html = Base64.encodeToString(html.getBytes("UTF-8"), Base64.DEFAULT);
} catch (UnsupportedEncodingException e) {
throw new RuntimeException("Missing UTF-8 support?!", e);