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CloseReview for CardBook by Markus
Rated 5 out of 5 stars
Very happy, great help for organizing many contacts and associated contact infos! Synchronizes nicely with Nextcloud, well integared in TB. If I may, one (small, but annoying) thing is that images of contact persons get distorted if they are not exactly the same height/width ratio.
This review is for a previous version of the add-on (85.8).To create your own collections, you must have a Mozilla Add-ons account.