**As** a User/Admin/everybody
**I want to** use the link to local URLs, application URLs, other other non-http(s) URLs that the browser supports
**so that** we can use it with existing DMS, and other local applications

**Examples:**

* Application URL schemes:

* vis://FE0E3D1D-9DC5-4931-BF6C-9E01216047A4/3/8326584

* dict://term lookup

* vscode://file/path/to/file

* • figma://

* element://vector/webapp/#/room/!ID

* tel://number

* sms://number

* facetime://number


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**Acceptance criteria**

* Under Administration → System settings → General, add a new setting above &#39;Welcome block text&#39;:

* Label: &quot;Allowed link protocols&quot;

* Type: Text area input, one protocol per line, similar to the attachment whitelist

* Caption: &quot;Allow these protocols to be rendered as links in work package descriptions, long text fields and comments. For example, tel: or element:&quot;.

* When not empty, use this allowlist when:

* Rendering Markdown in the backend

* Loading CKEditor, so that it uses that allowlist for new links Begin of the insertion

End of the insertion Begin of the deletion


**Known limitations**

End of the deletion * Begin of the insertionHowEnd of the insertion Begin of the deletion The autolinking from text rendering does not work reliably with these application schemes. You will needEnd of the deletion to use Begin of the insertionthisEnd of the insertion Begin of the deletion the &quot;Linking&quot;End of the deletion feature Begin of the deletion of CKEditorEnd of the deletion in Begin of the insertionCKEditor

End of the insertion Begin of the deletion the toolbar

End of the deletion * Begin of the insertionOption 1: Type the scheme above andEnd of the insertion Begin of the deletion alternatively,End of the deletion use Begin of the insertionauto-linking. Note thatEnd of the insertion the Begin of the insertionlink will not be shown automatically in CKEditor, but only after saving (same as when typing a HTTPS URL)

* Option 2: Use the link toolbar itemEnd of the insertion Begin of the deletion autolink hotkeyEnd of the deletion of CKEditor Begin of the insertionto create a link with the custom protocol


End of the insertion Begin of the deletion : [https://ckeditor.com/docs/ckeditor5/latest/features/link.html#autolink-feature](https://ckeditor.com/docs/ckeditor5/latest/features/link.html#autolink-feature)

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End of the deletion **Out of scope**

* Provide working links to `file://` local links, which all modern browsers block. The configuration will allow to whitelist them, but will be able to provide a working link