iLovePDF API

⭐ Beginner's Pick Documents & Productivity / API Key Intermediate HTTPS CORS
Varies by plan (check documentation)

Overview

iLovePDF API provides a full suite of PDF operations including conversion, merging, splitting, compressing, and adding page numbers, all accessible through a simple REST interface. It offers 250 free document operations per month, making it practical for small projects. You authenticate once to get a token, then submit tasks and download the results.

💡

Beginner Tip

The API works as a multi-step process: start a task, upload files, process them, and then download — follow each step in order and use the server and task ID returned in the first call for all subsequent requests.

Available Data

iLovePDF data via REST API
JSON-formatted response data
Requires API key authentication

Example Response

JSON Response
{
  "status": "success",
  "data": {
    "result": "Data from iLovePDF",
    "description": "Convert, merge, split, extract text and add page numbers for PDFs. Free for 250 documents/month",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

token JWT bearer token used to authenticate all subsequent API calls.
task Unique task identifier returned when starting a new operation.
server The specific iLovePDF server that handles the current task — must be used for all related requests.
server_filename The filename assigned to your uploaded file on the server, needed during the process step.
download_filename The filename of the processed file available for download.

Implementation Example

const url = "https://developer.ilovepdf.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

401 Unauthorized Invalid public key or expired token.
Re-authenticate by calling /auth with your public key to get a fresh token before each task.
422 Unprocessable Entity File format not supported for the requested task type.
Check the iLovePDF docs for supported input formats for each task (e.g., only PDFs can be merged).
Task not found after upload Using a task ID from a different server than the one assigned during task start.
Always use the server URL returned by the task start endpoint — do not hardcode the base URL.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 17/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS YES
Difficulty Intermediate
Verified: 2026-04-07

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