Signing a PDF file containing an image causes distortion to the image (using --clearsign).
```
gpg --clearsign --output='dices - signed with gpg.pdf' 'dices - unsigned.pdf'
```
**EDIT**: Ugh... I cannot find any means to attached files to this task!!! This is my first time with dev.gnupg.org. I guess I do not have enough rights to attach files? Please help. You can write to me at hans@deragon.biz if you do not want to pollute this task with instructions on how to attach files.