> 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/what-is-wvs.md). # What is WebViewer Server? World's #1 PDF SDK Library for Web, Mobile, Server, Desktop WebViewer Server is the Apryse SDK and custom Java code built in Apache Tomcat to allow server requests to the Apryse SDK. The WebViewer Server was designed to work together with the WebViewer client to give an ideal document experience. ## Should I use WebViewer Server with the WebViewer Client? Benefits of moving to WebViewer Server: * Offloads client side work server side, allowing for very large documents to be easily processed in weaker clients such as mobile or older browsers * Faster initial renders and times to first page in WebViewer * Use the PDF rendering capabilities of Apryse without WebViewer * Avoids spending development time implementing the Apryse SDK in your custom server, and offers a high performance usage of the Apryse SDK Downsides of moving to WebViewer Server: * Added complexity with WebViewer and WebViewer Server interactions * Increases implementation time when moving from a client side model * Adds the requirement of managing server infrastructure If you think WebViewer Server suits your situation, then check out our [setup guide.](/web/webviewer-server/wv-server-setup.md) ## What is WebViewer Server built with Docker? WebViewer Server uses a Linux Docker [container](https://www.docker.com/resources/what-container/) built on Debian. A container is similar to a virtual machine, but allows for a more fluid experience with a smaller performance hit. This container comes preconfigured with the required dependencies and options for it to work directly from the download. ## What is the WebViewer Server Windows Installer? An installer built for Windows which integrates the various WebViewer Server parts, similar to how our container handles WebViewer Server. This was made for users who cannot use Docker in their environments. See more information at [WebViewer Server Windows Installer guide](/web/webviewer-server/deployment/wv-server-deploying-without-docker.md). --- # 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/get-started/faq/what-is-wvs.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.