Android Question PDF file size

[ddk1]

I have just started using PdfDocument, and like TomKluz in Pdf file size, if I write a bitmap to the pdf I get a much bigger size.
In my case it has nothing to do with screen or scale. Simply 170Kb jpg added to blank pdf = 800Kb pdf.

Dim pdf As PdfDocument
pdf.Initialize
pdf.StartPage(595, 842) 'A4 size
Dim bmp as BitMap = LoadBitmap(strDir, strFile)
Dim DestRect as Rect
DestRect.Initialize(0, 0, 595, 842)
pdf.Canvas.DrawBitmap(bmp, Null, DestRect)
pdf.FinishPage
Dim out As OutputStream = File.OpenOutput(File.DirInternal, "1.pdf", False)
pdf.WriteToStream(out)
out.Close
pdf.Close

If the source picture is a jpg, 170Kb. When added and saved as a pdf, the resulting pdf file is 800Kb.
Even if I change the DestRect to be much smaller, I end up with a small picture on the page but its still 800Kb.
I thought maybe its to do with the source being a jpg file, with compression, and the target is uncompressed bitmap embedded in the pdf. However if a use a Pdf editing program to create a pdf and insert this picture, it doesn't end up with such a large pdf.
Is there a way to not have the pdf so large using PdfDocument? In that other post, TomKluz said 'PdfCreator used in B4J' didn't have this problem.

 

[Erel]

Try to load it with XUI.LoadBitmapResize.

 

[ddk1]

Simply using LoadBitmapResize keeping same size bitmap does not appear to make a difference. Sure, if I resize it smaller the result is smaller, but I lose quality. I'd already made the original bitmap a size that retained enough detail ie. 170Kb as opposed to 5-10MB straight from the camera.
I used this bit of code to utilize xui.LoadBitmapResize, retaining original size. Is there a different way I should have done it (assuming you don't simply mean resize it smaller)?

Dim bmp1 As Bitmap = LoadBitmap(strDir, strFile)
Dim bmp As B4XBitmap = xui.LoadBitmapResize(strDir, strFile, bmp1.Width, bmp1.Height, True).Rotate(90)
ScrRect.Initialize(0, 0, bmp.Width,bmp.Height)

 

[Erel]

The drawing size is 595 x 842. Use LoadBitmapResize to load a bitmap with this specific size.

 

[ddk1]

Ah, I see where you're going. If the full image size is told to show in a small space, it seems you get a larger pdf than necessary. Resizing the image to the smaller target size reduces how much image is embedded in the pdf. In this case, I end up 500Kb for a full page image (less margins). This is better than 800Kb but its still much larger than the original 170Kb image (which was in fact bigger in pixel size). I can live with that if thats the way it is. At least we trimmed it a bit.