> 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/layers-ocgs.md). # Layers (OCGs) - [Work with PDF Layers (OCGs) Using JavaScript](https://docs.apryse.com/web/layers-ocgs/layers.md): Unlock the power of PDF layers (OCGs) with JavaScript. Learn to extract, render, add, remove, and modify layers in your PDF documents effortlessly. Ideal for CAD drawings, artwork, maps, and more. Sta - [Showing & hiding PDF layers using JavaScript](https://docs.apryse.com/web/layers-ocgs/show-hide-layers.md): Learn how to show & hide PDF layers using JavaScript with the getLayersArray function. Easily retrieve OCG layers, selectively hide them, and refresh the page for a seamless user experience. The Aprys - [Add a new PDF Layer using JavaScript](https://docs.apryse.com/web/layers-ocgs/add-layer.md): Learn how to add PDF layers (OCG) to a new document with full sample code for creating, extracting, and rendering PDF layers. Master the process now! The Apryse Web SDK streamlines secure, serverless - [Extract layers from PDF using JavaScript](https://docs.apryse.com/web/layers-ocgs/extract-layer.md): Learn how to extract PDF layers or OCG (optional content group) from a document with full sample code. Create, extract, and render PDF layers effortlessly. The Apryse Web SDK streamlines secure, serve - [JavaScript samples for working with PDF layers](https://docs.apryse.com/web/layers-ocgs/samples.md): Explore JavaScript samples for manipulating PDF layers. Learn to extract layer info, show/hide specific layers, and work with color separation. Enhance your PDF handling using web. The Apryse Web SDK - [API for PDF Layers in JavaScript](https://docs.apryse.com/web/layers-ocgs/apis.md): Unlock the power of PDF layers in JavaScript with our comprehensive API. Effortlessly manage document layers for enhanced user experiences on web. The Apryse Web SDK streamlines secure, serverless doc --- # 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/layers-ocgs.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.