To limit the maximum size of uploaded files on an Apache web server, you can use the LimitRequestBody directive in the Apache HTTPD configuration file.
The LimitRequestBody directive specifies the maximum number of bytes that will be accepted in the request body (i.e. the request payload, such as an uploaded file). If the request body exceeds this limit, the server will return an HTTP 413 Request Entity Too Large error.
Here is an example of using the LimitRequestBody directive to limit the maximum size of uploaded files to 10 MB:
LimitRequestBody 10485760
This directive will allow uploaded files up to 10 MB in size, and will return an HTTP 413 error for larger files.
Keep in mind that the exact syntax and location of the LimitRequestBody directive may vary depending on your specific Apache installation and configuration. It is always a good idea to refer to the official Apache documentation for detailed instructions and further information.