Editting Images

convert inline:imagefile.b64 -flip inline:converted_imagefile.b64

NOTE data:image/png;base64, must precede the image data in the base64 file
convert ImageMagick command, see convert man page
inline: identifies it as a Pseudo-image format. See the ImageMagick Site for further details.
imagefile.b64 The inline base64 image file
-flip Optional: This is only one of many options available to convert to modify the image during conversion. -flip will flip image vertically. More options here at the convert man page
inline:converted_imagefile.b64 The output inline base64 pseudo format image file named converted_imagefile.b64

openssl enc -base64 -A -in image.png > image.b64

enc encode
-base64 or -a Base64 encode/decode, depending on encryption flag
-A Used with -[base64 a] to specify base64 buffer as a single line
-in image.png Input file, in this case image.png
> imagefile.b64 overwrite or clobber file, imagefile.b64
NOTE data:image/png;base64, is not generated in the file. Depending on how you intend to use the image file, you can optionally add data:image/png;base64,to the beginning of the file.

convert inline:image.b64 image.png

or, include an option to the convert process

convert inline:image.b64 -flop image.png

NOTE data:image/png;base64, must precede the image data in the base64 file
convert ImageMagick command
inline: identifies it as a Pseudo-image format. See the ImageMagick Site for further details.
imagefile.b64 The inline base64 image file
-flop Optional: This is only one of many options available to convert to modify the image during conversion. -flop will flop image horizontally. More options here at the convert man page
image.png The output image file