PDF转图片

说明将1个PDF中指定的页面拆分成单个图片(PNG)格式或长图(PNG)格式，并可以设置图片的质量大小。

体验地址 https://www.pdfai.cn/pdf-to-image

接口说明

请求地址 https://pdf-api.pdfai.cn/v1/pdf/pdf_to_image
请求方式 POST

请求Body

JSON格式

{
  "app_key": "app_key_test",
  "input": "https://static.pdfai.cn/static/example/files/four_pages.pdf",
  "page": "1-N",
  "quality": "high"
}

字段说明

名称	类型	必须	描述
app_key	String	是	`app_key_test`，固定值
input	String	是	输入文件，可访问互联网url，比如 `https://static.pdfai.cn/static/example/files/four_pages.pdf`
page	String	是	支持1；1-3；2,3；1-N，N代表最后一页，默认1-N；-1，长图
quality	String	否	必须。图片质量，可选值：high、middle、low

代码例子：支持 PHP、Node、Js、Go、C++、Python、Java 等

CURL

curl -X 'POST' \
  'https://pdf-api.pdfai.cn/v1/pdf/pdf_to_image' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
  "app_key": "app_key_test",
  "input": "https://static.pdfai.cn/static/example/files/four_pages.pdf",
  "page": "1-N",
  "quality": "high"
}'

PHP

<?php
$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => 'https://pdf-api.pdfai.cn/v1/pdf/pdf_to_image',
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_POST => true,
  CURLOPT_HTTPHEADER => [
    'accept: application/json',
    'Content-Type: application/json'
  ],
  CURLOPT_POSTFIELDS => json_encode([
    'app_key' => 'app_key_test',
    'input' => 'https://static.pdfai.cn/static/example/files/four_pages.pdf',
    'page' => '1-N',
    'quality' => 'high'
  ])
]);

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

curl_close($curl);

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

Node

const request = require('request');

const options = {
  url: 'https://pdf-api.pdfai.cn/v1/pdf/pdf_to_image',
  method: 'POST',
  headers: {
    'accept': 'application/json',
    'Content-Type': 'application/json'
  },
  json: {
    app_key: 'app_key_test',
    input: 'https://static.pdfai.cn/static/example/files/four_pages.pdf',
    page: '1-N',
    quality: 'high'
  }
};

request(options, function(error, response, body) {
  if (error) {
    console.error('Error:', error);
  } else {
    console.log('Response:', body);
  }
});

fetch('https://pdf-api.pdfai.cn/v1/pdf/pdf_to_image', {
  method: 'POST',
  headers: {
    'accept': 'application/json',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    app_key: 'app_key_test',
    input: 'https://static.pdfai.cn/static/example/files/four_pages.pdf',
    page: '1-N',
    quality: 'high'
  })
})
.then(response => response.json())
.then(data => {
  console.log('Success:', data);
})
.catch(error => {
  console.error('Error:', error);
});

Golang

package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io/ioutil"
    "net/http"
)

func main() {
    // 构造请求数据
    requestBody, err := json.Marshal(map[string]string{
        "app_key": "app_key_test",
        "input":   "https://static.pdfai.cn/static/example/files/four_pages.pdf",
        "page":    "1-N",
        "quality": "high",
    })
    if err != nil {
        fmt.Printf("Error: %v\n", err)
        return
    }

    // 创建请求
    req, err := http.NewRequest("POST", "https://pdf-api.pdfai.cn/v1/pdf/pdf_to_image", bytes.NewBuffer(requestBody))
    if err != nil {
        fmt.Printf("Error: %v\n", err)
        return
    }

    // 设置请求头
    req.Header.Set("Content-Type", "application/json")
    req.Header.Set("accept", "application/json")

    // 发送请求
    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        fmt.Printf("Error: %v\n", err)
        return
    }
    defer resp.Body.Close()

    // 读取响应
    body, err := ioutil.ReadAll(resp.Body)
    if err != nil {
        fmt.Printf("Error: %v\n", err)
        return
    }

    fmt.Println("Response:", string(body))
}

C++

#include <curl/curl.h>
#include <string>
#include <iostream>

// 回调函数处理响应数据
size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* userp) {
    userp->append((char*)contents, size * nmemb);
    return size * nmemb;
}

int main() {
    CURL* curl = curl_easy_init();
    std::string response;

    if(curl) {
        // 构造请求数据
        const char* json = "{\"app_key\":\"app_key_test\","
                          "\"input\":\"https://static.pdfai.cn/static/example/files/four_pages.pdf\","
                          "\"page\":\"1-N\","
                          "\"quality\":\"high\"}";

        // 设置请求头
        struct curl_slist* headers = NULL;
        headers = curl_slist_append(headers, "Content-Type: application/json");
        headers = curl_slist_append(headers, "accept: application/json");

        // 配置CURL选项
        curl_easy_setopt(curl, CURLOPT_URL, "https://pdf-api.pdfai.cn/v1/pdf/pdf_to_image");
        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, json);
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);

        // 执行请求
        CURLcode res = curl_easy_perform(curl);
        
        // 检查错误
        if(res != CURLE_OK) {
            std::cerr << "Error: " << curl_easy_strerror(res) << std::endl;
        } else {
            std::cout << "Response: " << response << std::endl;
        }

        // 清理
        curl_slist_free_all(headers);
        curl_easy_cleanup(curl);
    }

    return 0;
}

Python

import requests
import json

url = 'https://pdf-api.pdfai.cn/v1/pdf/pdf_to_image'
headers = {
    'accept': 'application/json',
    'Content-Type': 'application/json'
}
data = {
    'app_key': 'app_key_test',
    'input': 'https://static.pdfai.cn/static/example/files/four_pages.pdf',
    'page': '1-N',
    'quality': 'high'
}

try:
    response = requests.post(url, headers=headers, json=data)
    print('Response:', response.json())
except Exception as e:
    print('Error:', str(e))

Java


import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public class PdfToImageExample {
    public static void main(String[] args) {
        try {
            URL url = new URL("https://pdf-api.pdfai.cn/v1/pdf/pdf_to_image");
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-Type", "application/json");
            conn.setRequestProperty("accept", "application/json");
            conn.setDoOutput(true);

            // 构造请求数据
            String jsonInput = "{\"app_key\":\"app_key_test\"," +
                             "\"input\":\"https://static.pdfai.cn/static/example/files/four_pages.pdf\"," +
                             "\"page\":\"1-N\"," +
                             "\"quality\":\"high\"}";

            // 发送请求
            try (OutputStream os = conn.getOutputStream()) {
                byte[] input = jsonInput.getBytes(StandardCharsets.UTF_8);
                os.write(input, 0, input.length);
            }

            // 读取响应
            try (BufferedReader br = new BufferedReader(
                    new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8))) {
                StringBuilder response = new StringBuilder();
                String responseLine;
                while ((responseLine = br.readLine()) != null) {
                    response.append(responseLine.trim());
                }
                System.out.println("Response: " + response.toString());
            }

        } catch (Exception e) {
            System.out.println("Error: " + e.getMessage());
        }
    }
}

返回结果

{
  "code": 200,
  "data": {
    "file_url": [
      "https://static.pdfai.cn/static/example/out/splitImage_1.png",
      "https://static.pdfai.cn/static/example/out/splitImage_2.png",
      "https://static.pdfai.cn/static/example/out/splitImage_3.png",
      "https://static.pdfai.cn/static/example/out/splitImage_4.png"
    ]
  },
  "code_msg": "成功"
}

code 等于 200 代表成功，其他值代表失败