降低dpi

src/main/java/com/jtyjy/pdf2pptx/support/MyTask.java

@@ -40,7 +40,7 @@ public class MyTask implements Runnable {
                 imgFilePath.append(String.valueOf(i + 1));
                 imgFilePath.append(".png");
                 File dstFile = new File(imgFilePath.toString());
-                BufferedImage image = renderer.renderImageWithDPI(i, 250);
+                BufferedImage image = renderer.renderImageWithDPI(i, 150);
                 logger.info("线程：{} 开始转换第{}页pdf", Thread.currentThread().getName(), i);
                 ImageIO.write(image, "png", dstFile);
             }