Today I needed to move some contacts (about 100 or so) from my wife's phone into a new Google account I set up for her. Unfortunately the upload page on Google's site only allowed individual uploads and it would have taken hours to upload all contacts one by one.
If you are, like me, on OSX (or Linux) you can quite easily combine a folder full of .vcf contacts into one by using this command (navigate into the folder which holds the .vcf files first):
I'm sure you can do something similar on the Windows command line too. In fact I've Googled it for you. :-)
Enjoy.

#1 by Gus on 12/27/12 - 7:05 PM
#2 by bias on 2/19/13 - 5:57 PM
Note down path for your .vcf files or Copy it from address bar
Open command prompt (Press Win+R, type CMD then press enter)
In command window, type CD then paste (right click and select paste Ctrl+V will not work there). Then press enter.
Change the current drive to drive with vcf files (if it is in F drive type F: then enter. If it is in G type G: Then enter
Then type COPY *.VCF COMBINED.VCF then press enter
Now all the VCF files will be append to newly created COMBINED.VCF File.
#3 by cba on 6/13/13 - 6:43 AM