API v1 is deprecated and will be turned off on January 1, 2022. Check out the API v2 documentation.

The task: Combining multiple PDF files (1,2) to one PDF file.

1. Getting the Process URL

As always, we need a Process URL first. Therefore we need our personal API Key. We do set mode to combine. Click "Execute" to request the Process URL.

POST https://api.cloudconvert.com/v1/process


2. Starting the Process

Using the obtained Process URL, the process is started using the following request. We set input to download and files to an array, containg the input files. We set wait to true to block the request until the conversion is finished.

POST https://...cloudconvert.com/process/...


3. Download the output file

output.url offers the output file.