This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(3.2, 42%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EU%3C/text%3E%3C/svg%3E)
I need a free dll for convert PDF to TIFF with high quality. in VB.NET or C#
Everything I downloaded was a trial version or their quality was low
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(233.6, 28.999999999999996%, 32%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EXZ%3C/text%3E%3C/svg%3E)
Hi @user20 ,
You can try some free third-party tools.
For example: how to use imageMagick with C# (Remember to install ghostscript first)
You don't need any DLL
It can de done with PdfPage.RenderToStreamAsync
(tested on Windows 10 21H1, C# .NET Framework 4.7.2, with Windows.Graphics.Imaging.BitmapEncoder.TiffEncoderId for PdfPageRenderOptions and the quality seems ok)
I do not know how to use PdfPage.RenderToStreamAsync
do U have any sample?
A link to a sample, as I cannot post code in comments :
thanks alot. but my windows is 10 20H2 And there is no reference "C:\Program Files (x86)\Windows Kits\10\UnionMetadata\Windows.winmd"
It is in the Windows 10 SDK
Windows SDK
or older versions :
sdk-archive
Thanks. I did it
But Its quality is low
I need better quality
You can increase the quality by increasing
PdfPageRenderOptions. DestinationWidth
and
PdfPageRenderOptions.DestinationHeight
I tested by multiplying by 10 and the quality is great
Test original size and new size x 10 :
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(188.79999999999998, 74%, 28%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ED%3C/text%3E%3C/svg%3E)
I don't think there is a completely free library capable of doing this, but you can try Free Spire.PDF for .NET to convert PDF to TIFF if your PDF document does not exceed 10 pages. Otherwise, you'll need to use the paid version.