Convert Pdf page into image using mupdf

Question

I googled, but I cannot find a solution to do this.

I am in need of showing an image thumbnail view from a PDF's first page without opening it. The PDF file will be available in my mobile itself.

Installing another external library is not possible. Mupdf is available.

is it important to use muPDF, or is any way to convert the first page to an image sufficient? — serv-inc, May 29 '15 at 08:20
@user1587329 it's fine. no issues at all. but i cannot switch any other lib to render. ..thanks — Saravana Kumar Chinnaraj, May 29 '15 at 08:29
You can't render the first page of a PDF file without opening the PDF file.... — KenS, May 29 '15 at 15:32
Not without opening the PDF file. MuPDF has to open the PDF file and read it in order to render the page. — KenS, Jun 02 '15 at 07:02
Go to this answer: https://stackoverflow.com/questions/10698360/how-to-convert-a-pdf-page-to-an-image-in-android/63684103#63684103 — Naimatullah, Sep 01 '20 at 08:37

score 2 · Answer 1 · answered Jun 02 '15 at 05:44

Finally i done this, by,

drawPage(bp, 0, size.x, size.y, 0, 0, size.x, size.y, new Cookie());

it'll help you to render first page of PDF as BitMap. This method implemented in MuPDFCore.java.

PointF pageSize = getPageSize(0); float mSourceScale = Math.max(w/pageSize.x, h/pageSize.y);

        Point size = new Point((int)(pageSize.x*mSourceScale), (int)(pageSize.y*mSourceScale));
        final Bitmap bp = Bitmap.createBitmap(size.x, size.y, Bitmap.Config.ARGB_8888);

        drawPage(bp, 0, size.x, size.y, 0, 0, size.x, size.y, new Cookie());
        storeImageIntoLocal(bp,filePath);//To Do my custom method to store bitmap into local

score 1 · Answer 2 · edited May 23 '17 at 12:09

If you want to do this without muPDF, have a look at How to convert a PDF page to an image in Android?. The second answer gives a link to PdfRenderer (available from API 21). You probably use it like this:

 // create a new renderer
 PdfRenderer renderer = new PdfRenderer(getSeekableFileDescriptor());

 // render the page
 Page page = renderer.openPage(i).render(mBitmap, null, null, Page.RENDER_MODE_FOR_DISPLAY);

 // do stuff with the bitmap

 // close the page
 page.close();

 // close the renderer
 renderer.close();

Convert Pdf page into image using mupdf

2 Answers2