Professional PDF Automation. Zero Complexity.

Integrate the world's most versatile PDF toolkit directly into your application. Instead of managing dozens of different libraries, use one single universal endpoint to process, convert, and use AI on your documents.

Authentication

All API requests must include your secret API key in the X-API-Key HTTP header. You can find your API key in the User Dashboard under the Developer tab.

headers = {
    "X-API-Key": "pj_live_xxxxxxxxxxxx",
    "Content-Type": "application/json"
}

Universal Implementation

One function for all 30+ tools. Simply change the tool_name variable to switch between merging, splitting, OCR, or AI rewriting.

import requests

def pdfjin_process(tool, file_path, api_key, **params):
    url = f"https://pdfjin-api.run.app/{tool}"
    headers = {"X-API-Key": api_key}
    files = {"files": open(file_path, "rb")}
    
    response = requests.post(url, headers=headers, files=files, data=params)
    
    if response.status_code == 200:
        with open("result.pdf", "wb") as f:
            f.write(response.content)
        return True
    return False

# Usage Example
pdfjin_process("pdf-to-word", "invoice.pdf", "YOUR_API_KEY")

const axios = require('axios');
const fs = require('fs');
const FormData = require('form-data');

async function processPDF(tool, filePath, apiKey) {
    const form = new FormData();
    form.append('files', fs.createReadStream(filePath));

    const response = await axios.post(`https://pdfjin-api.run.app/${tool}`, form, {
        headers: { ...form.getHeaders(), 'X-API-Key': apiKey },
        responseType: 'arraybuffer'
    });

    fs.writeFileSync('result.pdf', response.data);
}

curl -X POST "https://pdfjin-api.run.app/merge-pdf" \
     -H "X-API-Key: YOUR_API_KEY" \
     -F "files=@document.pdf" \
     --output result.pdf

Endpoint Reference

Replace {tool_name} in your request with any of the identifiers below.

STANDARD TOOLS

CONVERSION TOOLS

AI & INTELLIGENCE

Common Parameters

Error Handling

PDFjin uses standard HTTP response codes to indicate the success or failure of an API request.

Rate Limits

Free tier users are limited to 50 tasks per day. Pro users enjoy unlimited tasks with a concurrency limit of 5 simultaneous requests.