> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/web/get-started/faq/domnodeinserted-warning.md). # DOMNodeInserted Warnings World's #1 PDF SDK Library for Web, Mobile, Server, Desktop #### 1. **What is the "DOMNodeInserted" warning?** ![](https://3532544125-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FX9YnTSKIHvV7m0A36LbO%2Fuploads%2Fgit-blob-dd2f3e9d5aab5ea256abd3d015d0175a1818b5f2%2F665911f184562ec56bec0abccea763352b591803-809x96.png?alt=media) The "DOMNodeInserted" warning is related to a deprecated event in web browsers. The DOMNodeInserted event is fired when a new node (like an element or text) is added to the DOM. This event is no longer used in modern browsers. #### 2. **Why is this warning appearing in WebViewer?** This warning appears because, at some point, an event listener for `DOMNodeInserted` was being used in the application. Even though the listener has been manually disabled and is no longer used, the warning persists because some WebViewer dependencies (like Quill) still reference this event. #### 3. **Is it necessary to take any action regarding this warning?** No action is required. The warning does not indicate any functional issues or performance problems. WebViewer will continue to work as expected and the necessary updates to resolve the warning is planned for a future release. #### --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.apryse.com/web/get-started/faq/domnodeinserted-warning.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.