ELAN supports importing file from :
Toolbox file (the section called “Toolbox file”)
Fieldworks Language Explorer (FLEx) file (the section called “Fieldworks Language Explorer (FLEx) file”)
CHAT file (the section called “CHAT file”)
Transcriber file (the section called “Transcriber files”)
CSV / Tab-delimited Text file (the section called “CSV / Tab-delimited Text files”)
Subtitle Text or Audacity Label file (the section called “Subtitle / Audacity Label file”)
Praat TextGrid file (the section called “Praat TextGrid file”)
WebAnnotation JSON file (the section called “WebAnnotation JSON file”)
Tiers from recognizer (the section called “Tiers from recognizer”)
Shoebox file (the section called “Shoebox file”)
There are also options in ELAN available to import multiple files at once. More details regarding these options can be found here: the section called “ Multiple file import options”