informativ
informative
Containing a lot of useful information; educational and enlightening.
Die Dokumentation über das alte Ägypten war sehr informativ.
The documentary about ancient Egypt was very informative.

informative
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informative
Containing a lot of useful information; educational and enlightening.
Die Dokumentation über das alte Ägypten war sehr informativ.
The documentary about ancient Egypt was very informative.

'Informativ' (informative) belongs to the word family of 'die Information' (information) and 'informieren' (to inform). When something is 'informativ' (informative), it gives you a lot of useful information.
Danke für das informative Gespräch!
Thank you for the informative conversation!
This adjective often describes media or forms of communication. Typical combinations are 'ein informativer Artikel' (an informative article), 'eine informative Webseite' (an informative website), 'ein informativer Vortrag' (an informative talk/lecture), or 'ein informatives Gespräch' (an informative conversation).
Auf der Webseite der Stadt finden Sie viele informative Broschüren.
On the city's website, you will find many informative brochures.
You can describe the amount of information more precisely with adverbs like 'sehr' (very), 'besonders' (especially), or also 'wenig' (not very/little).
Der Vortrag war zwar lang, aber leider nur wenig informativ.
The talk was long, but unfortunately not very informative.
helpful
'hilfreich' and 'informativ' can both be positive, especially for texts, conversations, or talks. 'informativ' means that something provides a lot of useful information. 'hilfreich' means that something really supports you or helps you make progress with a problem. The words can be confused because good information often helps too. But not everything that is informative is helpful for your specific situation. If you are describing content with a lot of information, 'informativ' fits. If you mean the benefit for a task or problem, 'hilfreich' fits.

Bitte schreib mir eine informative E-Mail mit allen wichtigen Daten zum Projekt.
Please write me an informative email with all the important details about the project.
Nach dem Gespräch wird der kurze Plan für unseren Alltag sehr hilfreich sein.
After the conversation, the short plan will be very helpful for our everyday life.