Rated 5 out of 5 stars

Perfect!
Solved my issues with 102.0
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ETA: It didn't solve my issues with 102.0 - as the developer advised me, that there's only some informational function provided. I remember to operate a folder-repair beforehand. 102.0 broke the correct display of messages by PayPal, DHL etc., showing them only in XML. Nevertheless, it's a handsome add-on in order to prove the used charset.

This review is for a previous version of the add-on (1.1.2). 

Hmm, which problem exactly. In TB 102 the add-on will only show the charset used, no more.