> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/~/changes/AJZwzCsyrD9hiTbOxIbO/height-and-imagery/os-mastermap-imagery-layer/os-mastermap-imagery-layer-downloads.md). # OS MasterMap Imagery Layer Downloads ## World files ECW The ECW world file states the X and Y coordinates of the centre of the north-west pixel. This file is available as a [downloadable zip archive from the OS MasterMap Imagery Layer product page](https://www.ordnancesurvey.co.uk/products/os-mastermap-imagery-layer#technical) of the OS website. ## World files JPEG The JPEG world file states the X and Y coordinates of the centre of the north-west pixel. This file is available as a [downloadable zip archive from the OS MasterMap Imagery Layer product page](https://www.ordnancesurvey.co.uk/products/os-mastermap-imagery-layer#technical) of the OS website. ## World files TIFF The TIFF world file states the X and Y coordinates of the centre of the north-west pixel. This file is available as a [downloadable zip archive from the OS MasterMap Imagery Layer product page](https://www.ordnancesurvey.co.uk/products/os-mastermap-imagery-layer#technical) of the OS website. ## XML file resources The XML schema for OS MasterMap Imagery Layer is available to be downloaded from the [OS XML file resources page](https://www.ordnancesurvey.co.uk/business-government/tools-support/xml) under the OS MasterMap layers heading. --- # 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 dynamically by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.os.uk/os-downloads/~/changes/AJZwzCsyrD9hiTbOxIbO/height-and-imagery/os-mastermap-imagery-layer/os-mastermap-imagery-layer-downloads.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 `build a script that syncs our docs to a CMS` 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.