# Questions about app.joplincloud.com

**URL:** <https://discourse.joplinapp.org/t/questions-about-app-joplincloud-com/47247>\
**Category:** Support\
**Created:** [10 September 2025 05:50 UTC](https://discourse.joplinapp.org/t/questions-about-app-joplincloud-com/47247 "2025-09-10T05:50:46Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![personalizedrefriger](https://yyz2.discourse-cdn.com/flex028/user_avatar/discourse.joplinapp.org/personalizedrefriger/32/13210_2.png) [@personalizedrefriger](https://discourse.joplinapp.org/u/personalizedrefriger)\
**Post date:** [10 September 2025 15:38 UTC](https://discourse.joplinapp.org/t/questions-about-app-joplincloud-com/47247/2 "2025-09-10T15:38:58Z")

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**Summary** : For the most part, `app.joplincloud.com` is a version of the mobile app compiled to run in a web browser. It's currently hosted as static HTML/JS [on GitHub pages](https://github.com/joplin/web-app/blob/main/README.md) and stores data locally.

See also:

- [web-app/README.md at main · joplin/web-app · GitHub](https://github.com/joplin/web-app/blob/main/README.md)

- [Web app | Joplin](https://joplinapp.org/help/dev/spec/web_app)

> [@fredv](#):
>
> where are data used by this app located ? in the browser's local storage ?

Data is stored locally.

> **Implementation details**
>
> - [File system access: Relevant code](https://github.com/laurent22/joplin/blob/dev/packages/app-mobile/utils/fs-driver/fs-driver-rn.web.worker.ts)
> - [Database access: Relevant code](https://github.com/laurent22/joplin/blob/dev/packages/app-mobile/utils/database-driver-react-native.web.ts)
> - For the most part, data is stored using the [Origin Private File System](https://developer.mozilla.org/en-US/docs/Web/API/File_System_API/Origin_private_file_system) browser API (including the database, through [`@sqlite.org/sqlite.wasm`](https://github.com/sqlite/sqlite-wasm).

> [@fredv](#):
>
> if i synchronize with Joplin Cloud, with E2EE enabled, what will be stored exactly and in which state ? full sqlite db ? crypted/uncrypted ?

The full sqlite database is stored locally, unencrypted (though I think this would be good to change!). At present, E2EE [on desktop, mobile, and also web](https://discourse.joplinapp.org/t/is-the-local-database-unencrypted/35084/3) only encrypts data on the server and not locally.

> [@fredv](#):
>
> what is the retention of data on the local computer when using the app ? I mean, if i connect on a another computer, does the synchronized data remain in the browser after i log out ? is there an option to do that ? (have a time limit for such data in the browser storage)  
> Thanks

Currently, the synchronized data is usually persisted after logging out. However, in Chrome and Chromium based browsers, the data should be discarded if the web app is run from an in-private browser tab (related: [storage quotas and eviction criteria: MDN](https://developer.mozilla.org/en-US/docs/Web/API/Storage_API/Storage_quotas_and_eviction_criteria#private_browsing)). (In Firefox in-private, it fails to load).

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