HTTP Server in C not displaying image

I am trying to create a simple HTTP-server using C. Here's my code

#include <stdio.h>
#include <sys/socket.h>
#include <unistd.h>
#include <stdlib.h>
#include <netinet/in.h>
#include <string.h>

#define PORT 8080
int main(int argc, char const *argv[])
{
    int server_fd, new_socket; long valread;
    struct sockaddr_in address;
    int addrlen = sizeof(address);
    
    // Only this line has been changed. Everything is same.
    char *hello = "HTTP/1.1 200 OK\nContent-Type: image/jpeg\nContent-Length: 10000\n\n<img src = \"hello.jpeg\" alt = \"hello image\">";
    
    // Creating socket file descriptor
    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0)
    {
        perror("In socket");
        exit(EXIT_FAILURE);
    }
    

    address.sin_family = AF_INET;
    address.sin_addr.s_addr = INADDR_ANY;
    address.sin_port = htons( PORT );
    
    memset(address.sin_zero, '\0', sizeof address.sin_zero);
    
    
    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address))<0)
    {
        perror("In bind");
        exit(EXIT_FAILURE);
    }
    if (listen(server_fd, 10) < 0)
    {
        perror("In listen");
        exit(EXIT_FAILURE);
    }
    while(1)
    {
        printf("\n+++++++ Waiting for new connection ++++++++\n\n");
        if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen))<0)
        {
            perror("In accept");
            exit(EXIT_FAILURE);
        }
        
        char buffer[30000] = {0};
        valread = read( new_socket , buffer, 30000);
        printf("%s\n",buffer );
        write(new_socket , hello , strlen(hello));
        close(new_socket);
    }
    return 0;
}

When Content-Type is text/html it is displaying text "Hello world"

char *hello = "HTTP/1.1 200 OK\nContent-Type: text\html\nContent-Length: 100\n\nHello world";

but after changing it to image/jpeg for displaying image I am getting a black background instead of image.

char *hello = "HTTP/1.1 200 OK\nContent-Type: image/jpeg\nContent-Length: 10000\n\n<img src = \"hello.jpeg\" alt = \"hello image\">";

When I run this code, I get this in the output

GET / HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Cache-Control: max-age=0
sec-ch-ua: "Google Chrome";v="105", "Not)A;Brand";v="8", "Chromium";v="105"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Linux"
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate, br
Accept-Language: en-GB,en-US;q=0.9,en;q=0.8