I have created a working prototype ( https://gist.github.com/ImreSamu/18fd1a419e514642ed4b ) for

Detecting duplicate translations.

• example spanish : https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-es_dups-csv
• example english : https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-en_dups-csv
• example german : https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-de_dups-csv

Export presets to CSV ( example hungarian output imported to google sheets :

• https://docs.google.com/spreadsheets/d/1pl3Vwsbp4lD8nK2f-nXWjCchgy5n6FaUnnYvTS_GUA4/edit#gid=198572089 )

I think it is very useful for me and the small hungarian community for detecting translations problems, and errors.

I have created a proposal for a similar service for helping translators: https://github.com/openstreetmap/iD/issues/2448

—— added:

some new languages examples:

• cs https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-cs_dups-csv
• da https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-da_dups-csv
• de https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-de_dups-csv
• en https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-en_dups-csv
• es https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-es_dups-csv
• fr https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-fr_dups-csv
• hu https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-hu_dups-csv
• it https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-it_dups-csv
• lt https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-lt_dups-csv
• pl https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-pl_dups-csv
• pt https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-pt_dups-csv
• ru https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-ru_dups-csv
• sk https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-sk_dups-csv
• sl https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-sl_dups-csv
• sv https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-sv_dups-csv
• ca https://gist.github.com/ImreSamu/18fd1a419e514642ed4b#file-x__ca_dups-csv

my code not working for Korean and Japan language :(