How to enable pinch zoom on a web view loading a url with pdf(Android)? Ref: https://stackoverflow.com/questions/16630382/how-to-enable-pinch-zoom-on-a-web-view-loading-a-url-with-pdfandroid WebView mWebView = (WebView) findViewById(R.id.webView); mWebView.getSettings().setJavaScriptEnabled( true ); WebSettings webSettings = mWebView.getSettings(); webSettings.setBuiltInZoomControls( true ); webSettings.setSupportZoom( true );