iText isn't outputting working jpegs

As it stands i've a section of code which writes to the SD card. It writes .jpegs, and it is giving them all variable kb sizes like you'd expect from a pdf full of images. However, when I select them on the tablet it's 'Unable to open photo', and when I open them on my computer it doesn't allow it either so there's obviously some level of corruption that i'm missing.I've also tested the image.length and that seems to be working too in terms of outputting many different byte sizes.If anyone could point me in the right direction atleast as to what i'm doing wrong i'd be greatful. By the way, i've tried a few things with bitmap factory to try and make it work such as re-opening the file with bitmap factory hoping that for some reason it might fix it. It didn't. Thanks very much for your time.
try {
        InputStream is = this.getAssets().open("iText-40.pdf");
        PdfReader reader = new PdfReader(is);
        for (int i = 0; i < reader.getXrefSize(); i++) {
            PdfObject pdfobj = reader.getPdfObject(i);
            if (pdfobj != null && pdfobj.isStream()) {
                PdfStream stream = (PdfStream) pdfobj;
                PdfObject pdfsubtype = stream.get(PdfName.SUBTYPE);
                if (pdfsubtype != null
                        && pdfsubtype.toString().equals(
                                PdfName.IMAGE.toString())) {
                    byte[] image = PdfReader
                            .getStreamBytesRaw((PRStream) stream);
                    FileOutputStream out = new FileOutputStream(new File(file.getParentFile(), i + ".jpeg"));
                    Bitmap bitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
                    System.out.println(image.length);

                    out.write(image);
                    out.flush();
                    out.close();

                }
            }
        }

    } catch (IOException e2) {
        System.out.println(e2);
        e2.printStackTrace();
    }

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