> 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/annotation/samples.md). # Code samples for adding annotations using JavaScript Learn how to save annotations to files, database, and back to documents on your server. Manage users, permissions, and create custom annotations effortlessly. The Apryse Web SDK streamlines secure, se #### Saving annotations to files Shows how to save annotations to files in your server. NodeJS PHP ASP.NET (MVC) #### Saving annotations to database Shows how to save annotations to database in your server. SQLite3 - NodeJS #### Saving annotations back to document Shows how to save annotations back to the document in your server. PDF Document - NodeJS #### Users and permissions Describes types of permissions and switching between users. You can also show/hide annotations of specific users. Launch Demo View Source Code #### Custom annotations Shows how to create and add custom annotations by extending the existing annotation classes. Launch Demo View Source Code --- # 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 by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.apryse.com/web/annotation/samples.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. 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.