python-barcode VS svg_utils

Yes, you can save images into the database using FileField or its sibling ImageField, though you'll need the Pillow library for it to work IIRC. Though, if you're talking about barcodes, then since barcodes are visual representations of texts and numbers, you could instead use some kind of barcode generator and simply store the data. See python-barcode for some ideas!

I have a hobby website where I can upload individual SVGs, and the server will combine these SVGs into a single file, which I can download and continue editing. For this I've been using this tool server side: https://github.com/btel/svg_utils, which is made for stacking SVGs for scientific publications, but it's not aware of Inkscape specific functions. I've just bumped into the issue that when I create two individual files which are using the same name (or ID) for a swatch (because one file is a modified copy of the other), the swatches will overwrite each other in the combined file. Also duplicate element IDs cause issues.

I looked first into svg_utils (https://github.com/btel/svg_utils) but was appalled at the dependencies. I still haven't even fully attempted a solution using it because I'd rather use anything else that is smaller.