curl_escape(3) - Man pages

curl_escape(3)              Library Functions Manual             curl_escape(3)

NAME
       curl_escape - URL encode a string

SYNOPSIS
       #include <curl/curl.h>

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

DESCRIPTION
       Obsolete function. Use curl_easy_escape(3) instead.

       This  function  converts  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 are 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) uses strlen() on
       string to find out the size.

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

PROTOCOLS
       This functionality affects all supported protocols

EXAMPLE
       int main(void)
       {
         char *output = curl_escape("data to convert", 15);
         if(output) {
           printf("Encoded: %s\n", output);
           curl_free(output);
         }
       }

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

AVAILABILITY
       Added in curl 7.1

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

SEE ALSO
       curl_free(3), curl_unescape(3)

libcurl                            2026-07-12                    curl_escape(3)

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