Generating QR code of very big file?

I want to generate a QR code of my 4096-bit armored GPG private key. The key is so big, the program qrencode seems to fail because of its size. $ gpg --export-secret-keys --armor > ~/private.key $ ./qrencode -o test.png Failed to encode the input data: Numerical result out of range How can I make that happen? Are there alternative programs to qrencode which can handle a very big GPG key? I want to print it on paper as this security.SE question suggested. --- The comments of @geruetzel and @ cuonglm are addressing this version of my question .