> 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/measurement.md). # Measurement - [Measure area, distance & perimeter in PDFs using JavaScript](https://docs.apryse.com/web/measurement/measurement.md): Developer's guide focusing on how to create PDF measurement in JS. Apryse WebViewer supports creating measurement annotations with UI - [Setting up measurements in WebViewer](https://docs.apryse.com/web/measurement/measurement-setup.md): Learn how to set up measurements in WebViewer by enabling the measurement annotation tools through the enableMeasurement property and utilizing the WebViewer API functions for toggling features. Optim - [Measurement annotations](https://docs.apryse.com/web/measurement/measurement-annotations.md): Create precise measurement annotations in WebViewer by clicking the Measure button and selecting a measurement tool. Easily add scale and measurement information to your document with this user-friend - [Customize the Scale of the PDF Measurement Tool](https://docs.apryse.com/web/measurement/measurement-tools.md): Customize the scale of your PDF measurement tool easily with this comprehensive guide. Learn how to adjust scale ratio and precision either through the user interface or programmatically. Choose from - [Samples for measuring PDFs using JavaScript](https://docs.apryse.com/web/measurement/measurement-samples.md): Measure PDFs effectively using JavaScript with these samples for measuring distance, perimeter, and area annotations. Explore the demo and view the source code for implementation. The Apryse Web SDK s - [API for PDF Measurement](https://docs.apryse.com/web/measurement/measurement-apis.md): Enhance your web development with WebViewer's essential APIs and tools for precise measurements and UI customization. Explore features like Distance Measurement, Perimeter Measurement, and more. The A --- # 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/measurement.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.