TIFF Compression Value 7 (Extended JPEG) Not Supported

Skip Navigation LinksHome  /  Support  /  Forums  /  DynamicPDF CoreSuite for .NET (v9)  /  Re: TIFF Compression Value 7 (Extended JPEG) Not Supported

DynamicPDF CoreSuite for .NET (v9) Forum

Hi,

We are using using Imaging.TiffFile to read a Tiff file from the hard drive.  We are then putting that into a Document using .GetDocment().  We are then converting the doc to a stream using .Draw().  At this stage we are getting a parsing error that states that TIFF Compression Value 7 (Extended JPEG) Not Supported. 

Is there a workaround for this?

Thank you

jason
Posted by a ceTe Software moderator
Hello Jason,

Our product does not support TIFF images with compression value 7 (Extended JPEG). Our product does support TIFF images with LZW compression, so you may want to look into modifying that TIFF image to use LZW compression.

Thanks,
ceTe Software Support Team.
Hi,

We are facing this issue as well while merging TIFF files with JPEG compression.
We tried using LZW compression, but the file size is too large.
Is there any other alternative?

Thank you.
Posted by a ceTe Software moderator
Hello Jason,

Correction on the last post. We do support JPEG in TIFF (compression value 6), just not Extended JPEG (compression value 7). We plan to add support for this in a future release.

Thanks,
ceTe Software Support Team
Thank  you.

Does it mean we can still compress TIFF using JPEG compression, but use a different compression value?
Posted by a ceTe Software moderator
Hi Jason,

Yes, if the TIFF compression value is 6, you can use TIFF files with JPEG encoding.

Thanks,
ceTe Software Support Team
Hi,

We tried with a TIFF image using JPEG compression of 60%, and 40%, but with that as well we are facing the same issue.
Are we doing something wrong here?

Thanks
Posted by a ceTe Software moderator
Hi,

There are 2 methods to compress JPEG images in TIFF. TIFF compression value 6 places the entire JPEG image data in the TIFF in one strip, or tile. TIFF compression value 7 breaks the image into multiple parts (strips or tiles) and places them in the TIFF. Please note that this is not the JPEG image compression percentage, but the method of  TIFF compression used. We currently support TIFF compression value 6, but TIFF compression value 7 will be added in v11. If you would like to BETA test this feature, please contact support and we will notify you once it is ready.

Thanks,
ceTe Software Support Team
Posted by a ceTe Software moderator - Commonly asked question
Hello,

Support for adding Tiff images with TIFF Compression value 7 (Extended JPEG) is included in the latest release, DynamicPDF Core Suite for .NET (v11). You can download latest product from NuGet (Package ID: ceTe.DynamicPDF.CoreSuite.NET) or from our website here

Thanks,
ceTe Software Support Team

All times are US Eastern Standard time. The time now is 1:30 AM.