Hello Mael,
Thanks a lot for a small, but very useful tool.
Sometimes I am using HxD to convert BIN files to HEX/Motorola format. But I ran into a problem, that typically these images starts not from zero.
You have already implemented the offset on loading HEX (thanks!), but I cannot find a way to specify it manually for raw binary files. For my purpose it doesn't matter, if you will make it as offset for the whole editor or only for export.