Getting Started

Get up and running with the FreeFileTools API in just a few minutes. Follow these steps to make your first API call.

Step 1: Create an Account

Step 2: Create an API Key

Once logged in, navigate to your Dashboard and go to API Keys. Click Create API Key to generate your key.

Your API key will look like: fft_abc123...

Important: Copy and store your API key securely. You will not be able to see the full key again after creation.

Step 3: Make Your First Request

Use your API key in the x-api-key header with every request. Here is a simple example using cURL to compress an image:

bash

curl -X POST https://freefiletools.io/api/image-compress \
  -H "x-api-key: fft_your_api_key_here" \
  -F "file=@photo.jpg" \
  -F "quality=80" \
  -o compressed.jpg

Complete Working Example

Here is a complete Node.js example that compresses an image and saves the result:

javascript

const fs = require("fs");

async function compressImage() {
  const formData = new FormData();
  formData.append("file", new Blob([fs.readFileSync("photo.jpg")]), "photo.jpg");
  formData.append("quality", "75");

  const response = await fetch("https://freefiletools.io/api/image-compress", {
    method: "POST",
    headers: {
      "x-api-key": "fft_your_api_key_here",
    },
    body: formData,
  });

  if (!response.ok) {
    const error = await response.json();
    console.error("Error:", error);
    return;
  }

  const buffer = Buffer.from(await response.arrayBuffer());
  fs.writeFileSync("compressed.jpg", buffer);
  console.log("Compressed image saved as compressed.jpg");
}

compressImage();

Next Steps

Authentication -- Learn about API key authentication in detail.

API Reference: Image Tools -- Explore all image processing endpoints.

API Reference: PDF Tools -- Explore all PDF processing endpoints.

Code Examples -- Ready-to-use examples in multiple languages.