The Lumber Room

"Consign them to dust and damp by way of preserving them"

Converting a data URL (aka data URI) to an image on the commandline (Mac OS X)

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This is trivial, but was awfully hard to find via Google Search. Eventually had to give up and actually think about it. :-)

So, a data-URI looks something like the following:

data:image/png;base64,[and a stream of base64 characters here]

The part after the comma is literally the contents of the file (image or whatever), encoded in base64, so all you need to do is run base64 --decode on that part.

For example, with the whole data URL copied to the clipboard, I can do:

pbpaste | sed -e 's#data:image/png;base64,##' | base64 --decode > out.png

to get it into a png file.

Written by S

Sun, 2015-09-27 at 19:58:17

Posted in compknow

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