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.\" generated by cd2nroff 0.1 from CURLOPT_MAXFILESIZE.md
.TH CURLOPT_MAXFILESIZE 3 "2025-06-27" libcurl
.SH NAME
CURLOPT_MAXFILESIZE \- maximum file size allowed to download
.SH SYNOPSIS
.nf
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXFILESIZE, long size);
.fi
.SH DESCRIPTION
Pass a long as parameter. This specifies the maximum accepted \fIsize\fP (in
bytes) of a file to download. If the file requested is found larger than this
value, the transfer is aborted and \fICURLE_FILESIZE_EXCEEDED\fP is returned.
Passing a zero \fIsize\fP disables this, and passing a negative \fIsize\fP yields a
\fICURLE_BAD_FUNCTION_ARGUMENT\fP.
The file size is not always known prior to the download start, and for such
transfers this option has no effect \- even if the file transfer eventually
ends up being larger than this given limit.
If you want a limit above 2GB, use \fICURLOPT_MAXFILESIZE_LARGE(3)\fP.
Since 8.4.0, this option also stops ongoing transfers if they reach this
threshold.
.SH DEFAULT
0, meaning disabled.
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode ret;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
/* refuse to download if larger than 1000 bytes */
curl_easy_setopt(curl, CURLOPT_MAXFILESIZE, 1000L);
ret = curl_easy_perform(curl);
}
}
.fi
.SH AVAILABILITY
Added in curl 7.10.8
.SH RETURN VALUE
\fIcurl_easy_setopt(3)\fP returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLOPT_MAXFILESIZE_LARGE (3),
.BR CURLOPT_MAX_RECV_SPEED_LARGE (3)