scaling down a png

[chriskuku]

I have a bunch of pngs that I just converted from even larger TIFs. Now the PNGs are still too large for usage on a website.
How can I a) findout their sizes (w x h) and b) scale them down to a fixed size? (using convert ?)

--
Christoph

[snibgo]

(a) identify.
(b) resize.

[chriskuku]

OK. Thanks. identify is a program. resize seems to be an option to convert.I found a good summing up here.