Files permitted by SharePoint Online

Question

Will SharePoint Online permit custom javascript and CSS? Also will it permit HTML with embedded .SVG files?

Answer 1

Hi @DavidLeeJr

As the script editor web part is not supported in modern SharePoint, We have SPFx based react script editor web part to add custom CSS or JavaScript to modern SharePoint Online pages. Here are the documents about not support in sharepoint modern page

https://support.microsoft.com/en-au/office/sharepoint-classic-and-modern-experiences-5725c103-505d-4a6e-9350-300d3ec7d73f

https://learn.microsoft.com/en-us/sharepoint/modernize-classic-team-site

Since there is no script editor web part in sharepoint modern page. We can create a custom spfx web part to deploy javascript and CSS. Please refer to the nice article to build your spfx webpart

https://www.sharepointdiary.com/2020/11/add-custom-css-to-sharepoint-online-modern-page.html

For more details about spfx please refer to the document

https://learn.microsoft.com/en-us/sharepoint/dev/spfx/sharepoint-framework-overview

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