How to extract JFFS2 image?

I have separated my firmware file, there are two files, squashfs and jffs2 files. Since the jffs2 contains all the modified firmware I want to extract it. How can I extract jffs2 ? I know I can use unsquashfs to extract the squashfs file but that’s not what I’m looking for.

unfortunately I don’t know how. Sorry!