> 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.

<a href="https://github.com/ApryseSDK/webviewer-samples/tree/main/webviewer-annotations-nodejs" class="button primary">NodeJS</a><a href="https://github.com/ApryseSDK/webviewer-samples/tree/main/webviewer-annotations-php" class="button primary">PHP</a><a href="https://github.com/ApryseSDK/webviewer-samples/tree/main/webviewer-annotations-aspnet" class="button primary">ASP.NET (MVC)</a>

#### Saving annotations to database

Shows how to save annotations to database in your server.

<a href="https://github.com/ApryseSDK/webviewer-samples/tree/main/webviewer-annotations-sqlite3" class="button primary">SQLite3 - NodeJS</a>

#### Saving annotations back to document

Shows how to save annotations back to the document in your server.

<a href="https://github.com/ApryseSDK/webviewer-samples/tree/main/webviewer-annotations-document" class="button primary">PDF Document - NodeJS</a>

#### Users and permissions

Describes types of permissions and switching between users. You can also show/hide annotations of specific users.

<a href="https://sdk.apryse.com/samples/web/samples/annotation/users-and-permissions/" class="button primary">Launch Demo</a><a href="/web/get-started/samples/users-and-permissions.md" class="button primary">View Source Code</a>

#### Custom annotations

Shows how to create and add custom annotations by extending the existing annotation classes.

<a href="https://sdk.apryse.com/samples/web/samples/annotation/custom-annotations/" class="button primary">Launch Demo</a><a href="/web/get-started/samples/custom-annotations.md" class="button primary">View Source Code</a>


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