How to download picasaweb album's photos without picasa ?

First, you have to fetch the picasaweb album RSS link (located in the right column). For example:

http://picasaweb.google.com/data/feed/base/user/mesher7909/albumid/5482956614732347265?alt=rss&kind=photo&hl=fr

Then this little command line will download in your current directory all the full size photos of this album:

URL="http://picasaweb.google.com/data/feed/base/user/mesher7909/albumid/5482956614732347265?alt=rss&kind=photo&hl=fr"
curl -s "$URL" \
   | xmlstarlet fo \
   | grep "<enclosure" \
   | sed 's/.*url="\(.*JPG\)".*/\1/gi' \
   | sed 's/\(\/[a-z_\.0-9-]*\)$/\/d\1/gi' \
   | wget -nc -i -

Needed packages:

sudo apt-get install curl xmlstarlet