# File Size ? This wildcard is designed to retrieve the file size in bytes for a specified file. The wildcard is utilized in the following manner: * {file.size.?} * For the following input (?) --> R:\Users\Administrator\Pictures\helmut-IO.ico * The output is going to be --> 256 \[filesize in byte] {% hint style="info" %} Ensure that the render node or server has access to file. If the wildcard is used on a server-side stream, the streams container needs to have access to the file path. {% endhint %} --- # Agent Instructions: 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 current page URL with the `ask` query parameter: ``` GET https://docs.helmut.de/helmut4-releases/v4.10.0/helmut4-components/streamdesigner/wildcards/file-related-wildcards-5/file-size.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.