# Using extensions in Collabora Online

**URL:** <https://forum.collaboraonline.com/t/using-extensions-in-collabora-online/734>\
**Category:** Installation & Configuration\
**Created:** [November 19, 2021, 2:55am UTC](https://forum.collaboraonline.com/t/using-extensions-in-collabora-online/734 "2021-11-19T02:55:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![phirestalker](https://avatars.discourse-cdn.com/v4/letter/p/d6d6ee/32.png) [@phirestalker](https://forum.collaboraonline.com/u/phirestalker)\
**Post date:** [November 19, 2021, 2:55am UTC](https://forum.collaboraonline.com/t/using-extensions-in-collabora-online/734/1 "2021-11-19T02:55:16Z")

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I would like to know if there is a way to install plugins (oxt files) in Collabora Online. I tried and got a Java error. Looking through the configuration files it seems libreoffice is built without java for the docker image.

Do I need to build myself with java enabled, or will extensions just not work at all?

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**Author:** ![mmeeks](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/mmeeks/32/371_2.png) [@mmeeks](https://forum.collaboraonline.com/u/mmeeks)\
**Post date:** [November 20, 2021, 9:06pm UTC](https://forum.collaboraonline.com/t/using-extensions-in-collabora-online/734/2 "2021-11-20T21:06:51Z")

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Yes - the way we try to optimize memory usage for multiple users is unlikely to work with Java without quite some significant testing & work - if you’d like to experiment with that it would be interesting to know the results - or mail me if you’d like some consultancy on it. No doubt with OpenJDK we could make it work - but for now StarBasic and/or python oxts are likely to work better.

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**Author:** ![phirestalker](https://avatars.discourse-cdn.com/v4/letter/p/d6d6ee/32.png) [@phirestalker](https://forum.collaboraonline.com/u/phirestalker)\
**Post date:** [November 20, 2021, 9:55pm UTC](https://forum.collaboraonline.com/t/using-extensions-in-collabora-online/734/3 "2021-11-20T21:55:27Z")

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I see. I am trying to set up a server for home usage 2 users at most for now. The plugin I want is called LibreGrammar which is a fork of LanguageTool that has a lot of the premium stuff added back in. I wonder if it can be configured to use a server like the Chrome plugin and maybe lessen the code enough to port to Python.

At any rate, I will probably go ahead and experiment with enabling java. Thanks for the info.