Export PDF pages to a series of images in Java -

i need export pages of arbitrary pdf document series of individual images in jpeg/png/etc format. need in in java.

although know itext, pdfbox , various other java pdf libraries, hoping pointer working example, or how-to.

thanks.

here 1 way it, combining code fragments around web.

how draw pdf image?

https://pdf-renderer.dev.java.net/examples.html

creating buffered image image

original: http://www.exampledepot.com/egs/java.awt.image/image2buf.html

updated: how convert buffered image image , vice-versa?

saving generated graphic png or jpeg file

original: http://www.exampledepot.com/egs/javax.imageio/graphic2file.html

updated: http://docs.oracle.com/javase/tutorial/2d/images/saveimage.html

combined works turn pages images:

import com.sun.pdfview.pdffile; import com.sun.pdfview.pdfpage;  import java.awt.graphics; import java.awt.graphicsconfiguration; import java.awt.graphicsdevice; import java.awt.graphicsenvironment; import java.awt.headlessexception; import java.awt.image; import java.awt.rectangle; import java.awt.transparency; import java.io.*; import java.nio.bytebuffer; import java.nio.channels.filechannel; import javax.swing.*; import javax.imageio.*; import java.awt.image.*;  public class imagemain {     public static void setup() throws ioexception {         // load pdf byte buffer         file file = new file("test.pdf");         randomaccessfile raf = new randomaccessfile(file, "r");         filechannel channel = raf.getchannel();         bytebuffer buf = channel.map(filechannel.mapmode.read_only, 0, channel.size());         pdffile pdffile = new pdffile(buf);         int numpgs = pdffile.getnumpages();         (int = 0; < numpgs; i++) {             // draw first page image             pdfpage page = pdffile.getpage(i);             // width , height doc @ default zoom             rectangle rect = new rectangle(0, 0, (int) page.getbbox().getwidth(), (int) page.getbbox().getheight());             // generate image             image img = page.getimage(rect.width, rect.height, // width & height                     rect, // clip rect                     null, // null imageobserver                     true, // fill background white                     true // block until drawing done                     );             // save file             bufferedimage bimg = tobufferedimage(img);             file yourimagefile = new file("page_" + + ".png");             imageio.write(bimg, "png", yourimagefile);         }     }      // method returns buffered image contents of image     public static bufferedimage tobufferedimage(image image) {         if (image instanceof bufferedimage) {             return (bufferedimage) image;         }         // code ensures pixels in image loaded         image = new imageicon(image).getimage();         // determine if image has transparent pixels; method's         // implementation, see e661 determining if image has transparent         // pixels         boolean hasalpha = hasalpha(image);         // create buffered image format that's compatible         // screen         bufferedimage bimage = null;         graphicsenvironment ge = graphicsenvironment.getlocalgraphicsenvironment();         try {             // determine type of transparency of new buffered image             int transparency = transparency.opaque;             if (hasalpha) {                 transparency = transparency.bitmask;             }             // create buffered image             graphicsdevice gs = ge.getdefaultscreendevice();             graphicsconfiguration gc = gs.getdefaultconfiguration();             bimage = gc.createcompatibleimage(image.getwidth(null), image.getheight(null), transparency);         } catch (headlessexception e) {             // system not have screen         }         if (bimage == null) {             // create buffered image using default color model             int type = bufferedimage.type_int_rgb;             if (hasalpha) {                 type = bufferedimage.type_int_argb;             }             bimage = new bufferedimage(image.getwidth(null), image.getheight(null), type);         }         // copy image buffered image         graphics g = bimage.creategraphics();         // paint image onto buffered image         g.drawimage(image, 0, 0, null);         g.dispose();         return bimage;     }      public static boolean hasalpha(image image) {         // if buffered image, color model readily available         if (image instanceof bufferedimage) {             bufferedimage bimage = (bufferedimage) image;             return bimage.getcolormodel().hasalpha();         }         // use pixel grabber retrieve image's color model;         // grabbing single pixel sufficient         pixelgrabber pg = new pixelgrabber(image, 0, 0, 1, 1, false);         try {             pg.grabpixels();         } catch (interruptedexception e) {         }         // image's color model         colormodel cm = pg.getcolormodel();         return cm.hasalpha();     }      public static void main(final string[] args) {         swingutilities.invokelater(new runnable() {             public void run() {                 try {                     imagemain.setup();                 } catch (ioexception ex) {                     ex.printstacktrace();                 }             }         });     } }