#Pdfwriter getinstance pdf#

I have also taken the opportunity to add a yellow border to the embedded image, which is 5 points wide, and then shown the original dimensions, followed by the scaled dimensions, and the resulting resolution of the image. Image jpg = Image.GetInstance(imagepath + '/Sunset.jpg') ĭoc.Add( new Paragraph( 'Original Width: ' + ())) ĭoc.Add( new Paragraph( 'Original Height ' + ())) ĭoc.Add( new Paragraph( 'Scaled Width: ' + ())) ĭoc.Add( new Paragraph( 'Scaled Height ' + ())) įloat Resolution = jpg.Width / jpg.ScaledWidth * 72f ĭoc.Add( new Paragraph( 'Resolution: ' + Resolution)) I can use the Document.PageSize object to do the work for me. I don't really want to have to remember all the various sizes of different documents and do these calculations every time I want to set the absolute position of an element. The Y-axis co-ordinate is the height of the image + the margin away from the top of the document, or 842 - (213.6 + 36) = 592.4 points from the bottom. The image is 72 points wide (1 inch) + the margin at 36 points (total 108 points) from the right hand edge of the document, or 595 - 108 = 487 points along the X-axis. This image will butt right up to the right-hand margin. The actual co-ordinate that needs to be passed in is the bottom left of the image position. An A4 document is 595 points wide and 842 pixels high with a 36 point margin all around by default. The second represents the Y-axis co-ordinate which starts from the bottom of the document and goes to the top. The first represents the co-ordinate along the X-axis, which starts at the left hand edge of the document and finishes at the right hand edge of the document. SetAbsolutePosition() accepts 2 floats as parameters. The SetAbsolutePosition() method will do this, but I need to get a calculator out. I have in mind the top right hand corner. Now I want to place the 300 dpi image in a particular position on the page. Increasing the resolution to 300 dpi will reduce the width to 1 inch, and the depth to 2.97 inches (72 points by 213.6 points).

So at the default 72 dpi, it will measure 4.17 inches wide by12.36 inches deep. Now, I have a large tif file that I want to use as a logo on an A4 letterhead. Image tif = Image.GetInstance(imagepath + '/mikesdotnetting.tif')

The image stays the same in terms of file size but occupies less space in the document.ĭoc.Add( new Paragraph( 'TIF Scaled to 300dpi')) What you are actually trying to do is squeeze 300 pixels into the space that 72 normally occupies. To achieve this, you can scale the image to 24%. Generally, commercial printers require that colour images for printing have a resolution of 300 dpi. If this file was being prepared for printing, the final job would be a bit nasty. By default, images are embedded at 72 dpi (Dots Per Inch) which coincidentally, matches the number of points in an inch.

#Pdfwriter getinstance pdf#

It's difficult to tell from the images I have provided so far, but the resolution of the resulting images in the PDF file is not that great. Using ( FileStream fs = new FileStream(imagepath + '/mikesdotnetting.png', FileMode.Open)) String url = ' Image jpg = Image.GetInstance( new Uri(url))