Automate Your KDP Cover Production

Integrate the most reliable KDP calculation engine directly into your tools and applications.

Designed for Publishing Professionals

Save precious time and eliminate errors, whether you're a solo author or a publishing house.

Prolific Authors

Generate dozens of templates in seconds from a simple spreadsheet. Focus on writing, not on calculations.

Publishers & Agencies

Integrate our API with your content management system (CMS) for a 100% automated and error-free cover production workflow.

Developers

Enhance your author application with a reliable KDP cover generation feature, without the complexity of developing it yourself.

Simple, Fast, and Powerful

One request, one response. That's all you need.

Example Request

Simply send your book's parameters to our endpoint and instantly get all the necessary dimensions in JSON format.


fetch('https://api.gabaritkdp.com/v1/calculate', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer VOTRE_CLÉ_API',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    "format": "6x9",
    "pageCount": 120,
    "paperType": "white",
    "bindingType": "paperback"
  })
})
.then(res => res.json())
.then(console.log);

Comprehensive Response

The response includes everything you need to generate your template, including dimensions in millimeters and pixels for Canva.


{
  "total_width_mm": 314.96,
  "total_height_mm": 234.95,
  "spine_mm": 7.62,
  "bleed_mm": 3.175,
  "canva_width_px": 3719,
  "canva_height_px": 2775,
  "_source": "API",
  "_apiVersion": "1.2.0"
}

Ready to Automate?

API access is included in our Pro plan. Get your key and start integrating in minutes.

Choose the Pro Plan