The Pdfcrowd API is HTTP-based, the communication is made through normal HTTP requests. You can call the API by sending an HTTP request to the API server address with options passed as POST data.
The POST request's content type must be
multipart/form-data if the
request includes any local
application/x-www-form-urlencoded can be used as
You can also check out our API client libraries if you want to implement the API in your favorite programming language.
The credentials to access the API are your Pdfcrowd username and the API key. You can try out the API without registering using the following demo credentials:
To get your personal API credentials, you can start a free API trial or buy the API license.
The authentication method for user credentials is HTTP Basic Access Authentication. You provide your credentials every time you make a request.
The server address is
Other addresses can be used:
https://api.pdfcrowd.com/convert/latest/is for the latest converter version.
https://api.pdfcrowd.com/convert/20.10/is for version 20.10.
https://api.pdfcrowd.com/convert/18.10/is for version 18.10.
https://api.pdfcrowd.com/convert/is a shortcut for version 18.10.
Both HTTP and HTTPS protocols are supported.
Refer to the PDF to PDF POST Reference for a description of all options.
Here are a few HTTP POST examples to get you started quickly with the API. See more examples.
curl -f -u "demo:ce544b6ea52a5621fb9d55f8b542d14d" \ -o "offer.pdf" \ -F "input_format=pdf" \ -F "f_1=@/path/to/cover.pdf" \ -F "f_2=@/path/to/proposal.pdf" \ -F "f_3=@/path/to/price.pdf" \ -F "f_4=@/path/to/contact.pdf" \ https://api.pdfcrowd.com/convert/20.10/
curl -f -u "demo:ce544b6ea52a5621fb9d55f8b542d14d" \ -o "company_offer.pdf" \ -F "input_format=pdf" \ -F "page_watermark=@/path/to/watermark.pdf" \ -F "f_1=@/path/to/proposal.pdf" \ https://api.pdfcrowd.com/convert/20.10/
HTTP response can contain the following headers.
You can find details about each conversion in your conversion log.
|x-pdfcrowd-debug-log||URL to the debug log|
|x-pdfcrowd-remaining-credits||the number of available conversion credits in your account|
|x-pdfcrowd-consumed-credits||the number of credits consumed by the conversion|
|x-pdfcrowd-job-id||the unique ID of the conversion|
|x-pdfcrowd-pages||the total number of pages in the output document|
|x-pdfcrowd-total-pages||the total number of pages in the original output document, including the pages excluded by print_page_range option|
|x-pdfcrowd-output-size||the size of the output in bytes|