curl --request POST \
  --url https://api.img-processing.com/v1/images/{image_id}/resize \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "width": 300,
  "height": 200,
  "name": "resized-image",
  "letterbox_color": "transparent",
  "position": "center",
  "fit": "contain"
}
'

import requests

url = "https://api.img-processing.com/v1/images/{image_id}/resize"

payload = {
    "width": 300,
    "height": 200,
    "name": "resized-image",
    "letterbox_color": "transparent",
    "position": "center",
    "fit": "contain"
}
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    width: 300,
    height: 200,
    name: 'resized-image',
    letterbox_color: 'transparent',
    position: 'center',
    fit: 'contain'
  })
};

fetch('https://api.img-processing.com/v1/images/{image_id}/resize', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.img-processing.com/v1/images/{image_id}/resize",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'width' => 300,
    'height' => 200,
    'name' => 'resized-image',
    'letterbox_color' => 'transparent',
    'position' => 'center',
    'fit' => 'contain'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.img-processing.com/v1/images/{image_id}/resize"

	payload := strings.NewReader("{\n  \"width\": 300,\n  \"height\": 200,\n  \"name\": \"resized-image\",\n  \"letterbox_color\": \"transparent\",\n  \"position\": \"center\",\n  \"fit\": \"contain\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.img-processing.com/v1/images/{image_id}/resize")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"width\": 300,\n  \"height\": 200,\n  \"name\": \"resized-image\",\n  \"letterbox_color\": \"transparent\",\n  \"position\": \"center\",\n  \"fit\": \"contain\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.img-processing.com/v1/images/{image_id}/resize")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"width\": 300,\n  \"height\": 200,\n  \"name\": \"resized-image\",\n  \"letterbox_color\": \"transparent\",\n  \"position\": \"center\",\n  \"fit\": \"contain\"\n}"

response = http.request(request)
puts response.read_body

{
  "id": "image_etm0g3x5iap4cld1qcfsjvo2",
  "name": "Processed Image",
  "url": "https://storage.img-processing.com/images/image_etm0g3x5iap4cld1qcfsjvo2",
  "width": 460,
  "height": 460,
  "format": "jpeg",
  "size": 282000,
  "created_at": "2021-09-01T12:00:00.000Z"
}

{
  "type": "https://docs.img-processing.com/errors/unauthorized",
  "error": "Unauthorized",
  "status": 401,
  "message": "API key is required."
}

{
  "type": "https://docs.img-processing.com/errors/forbidden",
  "error": "Forbidden",
  "status": 403,
  "message": "You are not allowed to access this image."
}

{
  "type": "https://docs.img-processing.com/errors/validation-error",
  "error": "Validation Error",
  "status": 422,
  "errors": [
    "{field or param} {error message}"
  ]
}

{
  "type": "https://docs.img-processing.com/errors/too-many-requests",
  "error": "Too Many Requests",
  "status": 429,
  "message": "Rate limit exceeded. Try again later."
}

{
  "type": "https://docs.img-processing.com/errors/internal-error",
  "error": "Internal Error",
  "status": 500,
  "message": "An unexpected error occurred. Please try again later. If the problem persists, contact support."
}