[wiktor_walc]

(CKEditor team member speaking) Proper handling pasting from Word really takes a lot of time and it's hardly possible to provide a high quality solution alone. We will deliver some basic (in our understanding) support for pasting from office in our most recent editor (https://ckeditor.com/ckeditor-5/) in 2-3 weeks and it already took long weeks of development (see https://github.com/ckeditor/ckeditor5-paste-from-office/issu...), even with our years of experience in rich text editing and with this particular feature.

If pasting from Word is absolutely critical feature for you you may want to check older editors on the market, like CKEditor 4 or even... TinyMCE, one of our competitors. These editors are on the market for 6+ years and had enough time and people to deal with the crap that MS Word produces - correctly preserving as much formatting as possible, without wasting a lot of your end users time on recreating the same content again in an online rich text editor.