Thanks for your feedback, Jan!
I actually pondered such option. In fact, in
https://jsonstat.com/api/ (CSV & JSON) it is possible to choose between ids or labels.
But I discarded it in
https://jsonstat.com/excel/ because, in Excel, it is possible to merge (join) different tables in such a way that the user can independently choose whether to use ids or labels, or even apply this choice selectively to certain dimensions while excluding others.
That's why, instead, I decided to benefit from the fact that Excel books are a way to pack different data structures (thanks to sheets). Including a sheet for id/label translation for each dimension in the Excel book allows the user to merge the information as she likes while avoiding repeating (usually long) labels attached to each value in the data tab.
I'm aware that this makes it a little more complicated for a non-advanced user that wants to end up with a pivotable table using labels, particularly because, in Excel, you cannot merge (join) several tables in a single step (you need a step for each merge). In this first version, though, I decided efficiency, flexibility and generality (and a simpler interface with less options) was more important than non-advanced user friendliness (I assumed -probably incorrectly- that a user that knows how to deal with pivotable tables know how to deal with table merges). So probably I'll need at some point to add the functionality you request!
BTW, I added support for POST-based APIs (like Statistics Norway's):
X.