JPEG to TIFF

Hi

 I have many images stored on file, If I need to change their file extension I usually open the image then click the File button then click Save As and then if you click the drop down arrow to the right of the Save as Type box this shows the different formats you can change your file to.  You could change jpeg to tiff.  Sometimes some types of file can't be open in certain applications eg PPT can't open a jpeg file, it will allow you to insert the image onto a slide.  If you open your image file in documents( make sure view pane is active)and right click on it then on the drop down list select OPEN WITH and choose an application with which to open you image file.  PAINT is a good one, this will open a jpeg file.  Once open click the small white dropdown arrow at the side of the FILE button this will open up a menu of different file formats, choose the one you want and your image will then be formatted to it. Close the application and you will see that your original image is still there, and also the one you've just created. 

It shouldn't be green - that would qualify as defective.

The point of saving the images as 300dpi TIFF is lost if you don't have the original images in a non-lossy format. JPEG is a great format for photographs but it's compression algorithms does damage to the image. Converting that file to a TIFF doesn't repair these compression artifacts. Similarly, if your images are less than 300dpi then converting the image up to 300dpi is not going to improve its quality.

There has already been a suggestion to use IrfanView to convert the images. That is an excellent piece of software and the price (free) is good but you might already have other software that can also do the job. GIMP and Photoshop are both image editors (one free and one hellishly expensive) and both would also be able to do the task of conversion but there are many others.