I am using ExcelToHtmlConverter provided by POI to xls to pdf conversion.
Somehow in the output I am not getting charts. 

I thought of adding one more method in ExcelToHtmlConverter named as processChart by extending the class. Sample method -

 //TODO convert chart to images and add to output
    private void processChart(HSSFSheet sheet) {
        for(HSSFChart chart : HSSFChart.getSheetCharts(sheet)){
            Element table = this.htmlDocumentFacade.createTable();
            this.htmlDocumentFacade.addStyleClass(table, this.cssClassPrefixTable, "border-collapse:collapse;border-spacing:0;");
            Element tableBody = this.htmlDocumentFacade.createTableBody();
            tableBody.setTextContent(chart.getChartTitle());
            table.appendChild(tableBody);
            this.htmlDocumentFacade.getBody().appendChild(table);
        }
    }


Somehow I am not able to convert this HSSFChart to image. Please suggest me a way to convert to chart to image or to add them in final output.