ShivaTools: Image to Base64 String is a macro for 3ds Max built to embed images directly into scripts, rather than shipping logos and icons as separate files. Drag and drop an image onto the macro and it encodes the image to a Base64 string using .NET, then places the output on your clipboard.
The clipboard result is more than the Base64 string alone: it also includes a ready-to-use block of code with a decoder function and a usage example. The code is not encrypted, so scripters who also want an encoder can dig into it directly.
Compatible with 3ds Max 2024 and listed here as free, this is version 1 from October 2023. It's a macro, so installation should be straightforward for scripters.