When I use express + gzippo, http://www.mywebsite.com/index.html is compressed but not http://www.mywebsite.com/
As I can see in source, if filename is a directory, you delegate it to express.
I think that it should be interesting to try to send index.html, it if exists, and gzip it.
Let me know what you think.
This is because gzippo doesn't support streaming files only static content files. This is being worked into a new version of connect which express is based on.