Hi Philip Actually, there is information in the Manual (https://www.gnupg.org/documentation/manuals.html) about adding photos to your keys, the relevant section is 4.1.3 (of the HTML version of the manual) on key management, which is this page
https://www.gnupg.org/documentation/manuals/gnupg/OpenPGP-Key-Management.html#OpenPGP-Key-Management. The command is the `addphoto` subcommand of `—edit-key` - one adds a photo by executing `$ gpg —edit-key <short key ID> addphoto` which prints out the following message (after the key information and associated emails): ``` Pick an image to use for your photo ID. The image must be a JPEG file. Remember that the image is stored within your public key. If you use a very large picture, your key will become very large as well! Keeping the image close to 240x288 is a good size to use. Enter JPEG filename for photo ID: ``` This message indicates acceptable dimensions but not size. However some GUI key management tools, such as Keychain tool from the GPG Suite (https://gpgtools.org/) specify that photos must be < 500 KB and the recommended size be < 15 KB. Sandeep Murthy [email protected] > On 31 Dec 2014, at 12:42, Philip Jackson <[email protected]> wrote: > > I've been looking for documentation with info on adding a photo id to a gpg > key. > The instructions for adding are available but I can't find any advice for the > size, format, dpi etc of the image to be used. > > I guess that the image size should be kept down somewhat to avoid making the > key > too large. And it appears that not all software will display the image at the > same size. > > Can anyone offer practical advice on the image parameters ? > > Philip > > _______________________________________________ > Gnupg-users mailing list > [email protected] > http://lists.gnupg.org/mailman/listinfo/gnupg-users
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