Web Dumper supports incremental downloads so you can fetch contents by file name this way:

http://www.maxprog.com/test[1-2]/picture[001-002].jpg
or http://www.maxprog.com//picture[12-15].jpg

Web Dumper will then download automatically:

http://www.maxprog.com/test1/picture001.jpg
http://www.maxprog.com/test1/picture002.jpg
http://www.maxprog.com/test2/picture001.jpg
http://www.maxprog.com/test2/picture002.jpg

or

http://www.maxprog.com/picture12.jpg
http://www.maxprog.com/picture13.jpg
http://www.maxprog.com/picture14.jpg
http://www.maxprog.com/picture15.jpg