curl_escape - Man Page

URL encodes the given string


#include <curl/curl.h>

char *curl_escape(const char *url, int length);


Obsolete function. Use curl_easy_escape(3) instead!

This function will convert the given input string to a URL encoded string and return that as a new allocated string. All input characters that are not a-z, A-Z or 0-9 will be converted to their "URL escaped" version (%NN where NN is a two-digit hexadecimal number).

If the length argument is set to 0, curl_escape(3) will use strlen() on the input url string to find out the size.

You must curl_free(3) the returned string when you are done with it.


char *output = curl_escape("data to convert", 15);
if(output) {
  printf("Encoded: %s\n", output);


Since 7.15.4, curl_easy_escape(3) should be used. This function will be removed in a future release.

Return Value

A pointer to a null-terminated string or NULL if it failed.

See Also

curl_unescape(3), curl_free(3), RFC2396

Referenced By


January 02, 2023 libcurl 7.88.1 libcurl Manual