In some use cases it could be desirable to be able to upload multiple files in one go. Annif nowdays has the suggest-batch REST method (https://github.com/NatLibFi/Annif/pull/664) which could be utilized for this.
The output suggestion sets (and probably also the raw input texts) should be somehow separated per input file in the web page, which is probably the hardest part for this.
In some use cases it could be desirable to be able to upload multiple files in one go. Annif nowdays has the suggest-batch REST method (https://github.com/NatLibFi/Annif/pull/664) which could be utilized for this.
The output suggestion sets (and probably also the raw input texts) should be somehow separated per input file in the web page, which is probably the hardest part for this.
Arkkiivi service has also this functionality.