Hi,
you could do a HEAD request, which would (if supported by the server) only transmit the headers and not the body. This is supported e.g. by the Palladian HTTP Retriever:
And if the server does not support HEAD, you can make use of the Maximum file size option and limit this to e.g. 0 so that no body payload is actually transmitted. Then just check for the response status (e.g. 200 vs 404).
Here’s an older thread which gives some more info:
–Philipp