CODEWITHSUNDEEP
c#asp.netasp.net-coreimage-manipulation
Jean AR
Jean AR

Reputation: 41

Get Image dimensions in c# asp.net core (framework 4.6.1)

Any idea on how to get an image dimensions in asp.net core, knowing that System.Drawing.Image doesn't work on this version. This is how I am actually reading the image:

byte[] data = File.ReadAllBytes("path_to_image");
return data;

i.e.: Can I find the Height and Width of an image in its byte[] representaion?

Any help in how to rotate the image is also welcome.

Upvotes: 0

Views: 1685

Answers (1)

Zachary Way
Zachary Way

Reputation: 11

You want bytes 11-12 for Horizontal resolution, and 13-14 for Vertical resolution. Assuming you're talking about a JPEG image. And byte 10 gives you the unit type (dots per inch or dots per cm)

https://www.w3.org/Graphics/JPEG/jfif3.pdf

Upvotes: 1

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