New Post: How to improve the performance of Image conversion

It takes huge time to convert and resize the images. Approximately it takes around 48 seconds to convert 6 images. I have attached the code I use and the sample images with the project link below:

https://github.com/cssriraman/ConvertImages

Please let me know how to improve the performance of the code.

Also I tried converting images using multi threads. Most of the time it fails to create the images correctly.

Please check.