Batch convert tiff files to jpg.?

Try the "Irfanview" program: http://irfanview.com/

It is capable of configurable batch conversions.

On unix (Linux or macos or another unix. Or even windows, since, as I was told, there is a linux shell in it now. Don't know how it works, tho, nor if it has access to files) I would do

find DirectoryToProcess -name '*.tiff' | while true; do read l||break; convert "$l" "$(dirname "$l")"/"$(basename "$l" .tiff)".jpg; done

find DirectoryToProcess -name '*.tiff'  

lists all files whose name is *.tiff

while true; do read l||break; ...; done

read all lines of that list (read), until there aren't any more (||break). And do "..." with "$l" being the content of each line (that is, the name of each tiff file)

convert "afile.ext1" "anotherfile.ext2"

convert an image in file afile.ext1 into an image in file anotherfile.ext2. Format of input file is guessed from the content of the file afile.ext1 (so ext1 doesn't really matter). Format of output file anotherfile.ext2 is guessed from the extension ".ext2")

So for example

convert "cat.png" "dog.jpg"

creates a file dog.jpg being a JPG image whose content is the same as dog.png.

$(dirname "$l") is the directory containing file "$l"

For each file, call convert with 2 arguments, the file, and the file with .tiff replaced with .png

$(basename "$l" .tiff) is the filename, without the directory, and without extension .tiff.

So altogether, "$(dirname "$l")"/"$(basename "$l" .tiff)".jpg

is just the filename of tiff image "$l", with extension ".tiff" replaced by ".jpg"

you may have to replace ".tiff" by ".tif" if you are using one of those OS with only 3 characters extension.

It's free : )

https://convertio.co/tiff-jpg/

tiffs are tricky, as they can hold multiple images, and Windows cannot easily open/edit them.

you need to use the software that came with your scanner to manage/convert them.