I recently had a need to convert some image files to its base64 equivalent as I was creating some email signatures and needed to embed some images.
Here is the script that takes a selection of images and converts them to their base64 encoded data-uri results. The results will appear in the same location as the original image file.
Pre-requisites: OpenSSL*see thread below
Feel free to enhance and tweak.
Latest version on Github and here:
-- Converts an image file to its base64 data-uri equivalent.
-- Created by Ian Shen / 2B3 PRODUCTIONS LLC on 2021/12/31
-- Latest at https://github.com/2b3pro/devonthink_scripts/blob/main/image2base64.scpt
-- Copyright (cc) Attribution-NonCommercial-ShareAlike 4.0 International https://creativecommons.org/licenses/by-nc-sa/4.0/
tell application id "DNtp"
try
set this_selection to the selection
set the_group to the current group
if this_selection is {""} then error "Please select some image files."
repeat with this_item in this_selection
set the_rectype to the type of this_item as string
set the_imagetype to the MIME type of this_item
if the_rectype = "picture" or the_imagetype = "image/svg+xml" then
try
set this_path to the path of this_item
set the_tags to the tags of this_item
set the_record to (create record with {type:"text", name:(name without extension of this_item) & "-b64.txt"} in the_group)
set the_b64_path to the path of the_record
with timeout of 45 seconds
set the_results to (do shell script "/usr/bin/openssl base64 -in " & this_path)
end timeout
set the plain text of the_record to ("data:" & the_imagetype & ";base64," & the_results) as string
set the tags of the_record to the_tags
end try
else
display alert "This file is not an image file."
end if
end repeat
on error error_message number error_number
if the error_number is not -128 then display alert "DEVONthink" message error_message as warning
end try
end tell
