EndNote Web/Online
Overview of EndNote Web/Online
Starting with EndNote 21, there are two online interfaces for interacting with EndNote references in a Synced EndNote library: EndNote online and EndNote Web. Only one EndNote library can be Synced, so the same set of references will appear in both online interfaces. This means when you Sync an EndNote library, you can access your references through either interface with the same logon credentials if you have the current version of EndNote.
Each EndNote Web/online library can store thousands of records and create bibliographies in thousands of publishing styles. Although the references are the same and can be worked with in both interfaces, the feature sets available are somewhat different.
EndNote online is the older online interface for accessing an EndNote library's information online. It has a free version with limited storage space and a premium version with unlimited storage space. EndNote Web is a newer online interface for accessing the same EndNote library's information online.
EndNote Online
With EndNote online, our Cite While You Write feature is available to anyone using Microsoft Word on the desktop to create bibliographies. (See Cite While You Write in Microsoft Word and The Application Tab in the Cite While You Write Preferences Dialog.) If you use the Go to EndNote online command in Cite While You Write in Word, it will take you to your EndNote online library.
EndNote online has a feature set that provides a range of bibliographic management tools on the Web. You can import and edit references via a personal EndNote account, and then cite the references in papers and create bibliographies.
EndNote online can search Web of Science, PubMed, and hundreds of other online library databases to help you build a personal reference collection. It includes integration with the Web of Science Core Collection with dynamic links to Times Cited records and Related Records giving you one-click access to the latest information on a reference article.
EndNote online allows you to create and share groups with other EndNote users, just as you can in EndNote. Shared groups can be managed through either the desktop or EndNote online interface.
EndNote Web
EndNote Web provides an online interface more similar in appearance to the desktop. For example, while in EndNote online you must edit reference data in a separate browser window, with EndNote Web you can edit a reference in the same window with Summary, Edit, and File Attachment panels, much as you can on the desktop. If a reference has a PDF attached, from the File Attachment or Summary panels you can open that PDF in a separate browser window with a PDF reader to view it. If CrossRef has updated metadata information for a reference, the Edit panel will display an alert.
The Summary Panel for a reference also provides a preview option for viewing the reference as it would appear for a limited number of styles, with the ability to copy the reference in that format for pasting into a document.
EndNote Web includes the Research Assistant feature, also available in EndNote desktop. The Research Assistant uses a generative AI-powered tool that enhances your research discovery by extracting key insights from individual papers, creating a summary of the article independent of the author's abstract. You can find more information at Artificial Intelligence (AI) in EndNote: The Research Assistant.
EndNote Web also includes a PDF viewer for PDF attachments.
Cite While You Write with Word Online and Google Docs integrates with EndNote Web. Links from those applications will take you to the EndNote Web interface for your library.
EndNote Web supports the Tags feature in EndNote. Tags can be assigned and managed for references from either the desktop or the EndNote Web interface.
Like the desktop interface, EndNote Web allows you to control the columns that show in the browser. Just click the Columns button at the far right. Then click a column heading to sort the library by that field.
EndNote Web allows you to control the interface display through the 
with options to match the operating system, or to choose a light or dark display.
And, of course, you can manage your references in multiple ways using the handy EndNote Web toolbar.
Create new reference
Add selected references to groups
Export selected references (in the .ris format)
Remove selected references from group
Get citations for selected references
Move selected reference to trash
Note: The command to Get citations for selected references does not download cited references. It provides a view of how the reference would be formatted according to a limited number of styles, with an option to copy the reference as it appears.
Accessing EndNote Web / Online
To access your EndNote account through the EndNote Online interface, go to https://my.endnote.com, enter your login information, and click Sign in.
To access your EndNote account through the new EndNote Web interface, go to https://web.endnote.com, enter your login information, and click Sign in.