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pdf-generator-api

Introduction

PDF Generator API allows you easily generate transactional PDF documents and reduce the development and support costs by enabling your users to create and manage their document templates using a browser-based drag-and-drop document editor.

The PDF Generator API features a web API architecture, allowing you to code in the language of your choice. This API supports the JSON media type, and uses UTF-8 character encoding.

You can find our previous API documentation page with references to Simple and Signature authentication here.

Base URL

The base URL for all the API endpoints is https://us1.pdfgeneratorapi.com/api/v3

For example

  • https://us1.pdfgeneratorapi.com/api/v3/templates
  • https://us1.pdfgeneratorapi.com/api/v3/workspaces
  • https://us1.pdfgeneratorapi.com/api/v3/templates/123123

Editor

PDF Generator API comes with a powerful drag & drop editor that allows to create any kind of document templates, from barcode labels to invoices, quotes and reports. You can find tutorials and videos from our Support Portal.

Definitions

Organization

Organization is a group of workspaces owned by your account.

Workspace

Workspace contains templates. Each workspace has access to their own templates and organization default templates.

Master Workspace

Master Workspace is the main/default workspace of your Organization. The Master Workspace identifier is the email you signed up with.

Default Template

Default template is a template that is available for all workspaces by default. You can set the template access type under Page Setup. If template has "Organization" access then your users can use them from the "New" menu in the Editor.

Data Field

Data Field is a placeholder for the specific data in your JSON data set. In this example JSON you can access the buyer name using Data Field {paymentDetails::buyerName}. The separator between depth levels is :: (two colons). When designing the template you don’t have to know every Data Field, our editor automatically extracts all the available fields from your data set and provides an easy way to insert them into the template.

{
    "documentNumber": 1,
    "paymentDetails": {
        "method": "Credit Card",
        "buyerName": "John Smith"
    },
    "items": [
        {
            "id": 1,
            "name": "Item one"
        }
    ]
}

Authentication

The PDF Generator API uses JSON Web Tokens (JWT) to authenticate all API requests. These tokens offer a method to establish secure server-to-server authentication by transferring a compact JSON object with a signed payload of your account’s API Key and Secret. When authenticating to the PDF Generator API, a JWT should be generated uniquely by a server-side application and included as a Bearer Token in the header of each request.

Legacy Simple and Signature authentication

You can find our legacy documentation for Simple and Signature authentication here.

Accessing your API Key and Secret

You can find your API Key and API Secret from the Account Settings page after you login to PDF Generator API here.

Creating a JWT

JSON Web Tokens are composed of three sections: a header, a payload (containing a claim set), and a signature. The header and payload are JSON objects, which are serialized to UTF-8 bytes, then encoded using base64url encoding.

The JWT's header, payload, and signature are concatenated with periods (.). As a result, a JWT typically takes the following form:

{Base64url encoded header}.{Base64url encoded payload}.{Base64url encoded signature}

We recommend and support libraries provided on jwt.io. While other libraries can create JWT, these recommended libraries are the most robust.

Header

Property alg defines which signing algorithm is being used. PDF Generator API users HS256. Property typ defines the type of token and it is always JWT.

{
  "alg": "HS256",
  "typ": "JWT"
}

Payload

The second part of the token is the payload, which contains the claims or the pieces of information being passed about the user and any metadata required. It is mandatory to specify the following claims:

  • issuer (iss): Your API key
  • subject (sub): Workspace identifier
  • expiration time (exp): Timestamp (unix epoch time) until the token is valid. It is highly recommended to set the exp timestamp for a short period, i.e. a matter of seconds. This way, if a token is intercepted or shared, the token will only be valid for a short period of time.
{
  "iss": "ad54aaff89ffdfeff178bb8a8f359b29fcb20edb56250b9f584aa2cb0162ed4a",
  "sub": "[email protected]",
  "exp": 1586112639
}

Signature

To create the signature part you have to take the encoded header, the encoded payload, a secret, the algorithm specified in the header, and sign that. The signature is used to verify the message wasn't changed along the way, and, in the case of tokens signed with a private key, it can also verify that the sender of the JWT is who it says it is.

HMACSHA256(
    base64UrlEncode(header) + "." +
    base64UrlEncode(payload),
    API_SECRET)

Putting all together

The output is three Base64-URL strings separated by dots. The following shows a JWT that has the previous header and payload encoded, and it is signed with a secret.

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJhZDU0YWFmZjg5ZmZkZmVmZjE3OGJiOGE4ZjM1OWIyOWZjYjIwZWRiNTYyNTBiOWY1ODRhYTJjYjAxNjJlZDRhIiwic3ViIjoiZGVtby5leGFtcGxlQGFjdHVhbHJlcG9ydHMuY29tIn0.SxO-H7UYYYsclS8RGWO1qf0z1cB1m73wF9FLl9RCc1Q

// Base64 encoded header: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9
// Base64 encoded payload: eyJpc3MiOiJhZDU0YWFmZjg5ZmZkZmVmZjE3OGJiOGE4ZjM1OWIyOWZjYjIwZWRiNTYyNTBiOWY1ODRhYTJjYjAxNjJlZDRhIiwic3ViIjoiZGVtby5leGFtcGxlQGFjdHVhbHJlcG9ydHMuY29tIn0
// Signature: SxO-H7UYYYsclS8RGWO1qf0z1cB1m73wF9FLl9RCc1Q

Testing with JWTs

You can create a temporary token in Account Settings page after you login to PDF Generator API. The generated token uses your email address as the subject (sub) value and is valid for 5 minutes. You can also use jwt.io to generate test tokens for your API calls. These test tokens should never be used in production applications.


Libraries and SDKs

Postman Collection

We have created a Postman Collection so you can easily test all the API endpoints wihtout developing and code. You can download the collection here or just click the button below.

Run in Postman

Client Libraries

All our Client Libraries are auto-generated using OpenAPI Generator which uses the OpenAPI v3 specification to automatically generate a client library in specific programming language.

We have validated the generated libraries, but let us know if you find any anomalies in the client code.


Error codes

Code Description
401 Unauthorized
402 Payment Required
403 Forbidden
404 Not Found
422 Unprocessable Entity
500 Internal Server Error

401 Unauthorized

Description
Authentication failed: request expired
Authentication failed: workspace missing
Authentication failed: key missing
Authentication failed: property 'iss' (issuer) missing in JWT
Authentication failed: property 'sub' (subject) missing in JWT
Authentication failed: property 'exp' (expiration time) missing in JWT
Authentication failed: incorrect signature

402 Payment Required

Description
Your account is suspended, please upgrade your account

403 Forbidden

Description
Your account has exceeded the monthly document generation limit.
Access not granted: You cannot delete master workspace via API
Access not granted: Template is not accessible by this organization
Your session has expired, please close and reopen the editor.

404 Entity not found

Description
Entity not found
Resource not found
None of the templates is available for the workspace.

422 Unprocessable Entity

Description
Unable to parse JSON, please check formatting
Required parameter missing
Required parameter missing: template definition not defined
Required parameter missing: template not defined

This Python package is automatically generated by the OpenAPI Generator project:

  • API version: 3.1.1
  • Package version: 1.0.0
  • Build package: org.openapitools.codegen.languages.PythonClientCodegen For more information, please visit https://support.pdfgeneratorapi.com

Requirements.

Python >= 3.6

Installation & Usage

pip install

If the python package is hosted on a repository, you can install directly using:

pip install git+https://github.com/pdfgeneratorapi/python-client.git

(you may need to run pip with root permission: sudo pip install git+https://github.com/pdfgeneratorapi/python-client.git)

Then import the package:

import pdf_generator_api_client

Setuptools

Install via Setuptools.

python setup.py install --user

(or sudo python setup.py install to install the package for all users)

Then import the package:

import pdf_generator_api_client

Getting Started

Please follow the installation procedure and then run the following:

import time
import pdf_generator_api_client
from pprint import pprint
from pdf_generator_api_client.api import documents_api
from pdf_generator_api_client.model.batch_data import BatchData
from pdf_generator_api_client.model.inline_response2004 import InlineResponse2004
from pdf_generator_api_client.model.inline_response401 import InlineResponse401
from pdf_generator_api_client.model.inline_response402 import InlineResponse402
from pdf_generator_api_client.model.inline_response403 import InlineResponse403
from pdf_generator_api_client.model.inline_response404 import InlineResponse404
from pdf_generator_api_client.model.inline_response422 import InlineResponse422
from pdf_generator_api_client.model.inline_response500 import InlineResponse500
# Defining the host is optional and defaults to https://us1.pdfgeneratorapi.com/api/v3
# See configuration.py for a list of all supported configuration parameters.
configuration = pdf_generator_api_client.Configuration(
    host = "https://us1.pdfgeneratorapi.com/api/v3"
)

# The client must configure the authentication and authorization parameters
# in accordance with the API server security policy.
# Examples for each auth method are provided below, use the example that
# satisfies your auth use case.

# Configure Bearer authorization (JWT): JSONWebTokenAuth
configuration = pdf_generator_api_client.Configuration(
    access_token = 'YOUR_BEARER_TOKEN'
)


# Enter a context with an instance of the API client
with pdf_generator_api_client.ApiClient(configuration) as api_client:
    # Create an instance of the API class
    api_instance = documents_api.DocumentsApi(api_client)
    template_id = 19375 # int | Template unique identifier
body = {} # {str: (bool, date, datetime, dict, float, int, list, str, none_type)} | Data used to generate the PDF. This can be JSON encoded string or a public URL to your JSON file.
name = "My document" # str | Document name, returned in the meta data. (optional)
format = "pdf" # str | Document format. The zip option will return a ZIP file with PDF files. (optional) (default to "pdf")
output = "base64" # str | Response format. "I" is used to return the file inline. With the url option, the document is stored for 30 days and automatically deleted. (optional) (default to "base64")

    try:
        # Generate document
        api_response = api_instance.merge_template(template_id, body, name=name, format=format, output=output)
        pprint(api_response)
    except pdf_generator_api_client.ApiException as e:
        print("Exception when calling DocumentsApi->merge_template: %s\n" % e)

Documentation for API Endpoints

All URIs are relative to https://us1.pdfgeneratorapi.com/api/v3

Class Method HTTP request Description
DocumentsApi merge_template POST /templates/{templateId}/output Generate document
DocumentsApi merge_templates POST /templates/output Generate document (multiple templates)
TemplatesApi copy_template POST /templates/{templateId}/copy Copy template
TemplatesApi create_template POST /templates Create template
TemplatesApi delete_template DELETE /templates/{templateId} Delete template
TemplatesApi get_editor_url POST /templates/{templateId}/editor Open editor
TemplatesApi get_template GET /templates/{templateId} Get template
TemplatesApi get_templates GET /templates Get templates
TemplatesApi update_template PUT /templates/{templateId} Update template
WorkspacesApi delete_workspace DELETE /workspaces/{workspaceId} Delete workspace
WorkspacesApi get_workspace GET /workspaces/{workspaceId} Get workspace

Documentation For Models

Documentation For Authorization

JSONWebTokenAuth

  • Type: Bearer authentication (JWT)

Author

[email protected]

Notes for Large OpenAPI documents

If the OpenAPI document is large, imports in pdf_generator_api_client.apis and pdf_generator_api_client.models may fail with a RecursionError indicating the maximum recursion limit has been exceeded. In that case, there are a couple of solutions:

Solution 1: Use specific imports for apis and models like:

  • from pdf_generator_api_client.api.default_api import DefaultApi
  • from pdf_generator_api_client.model.pet import Pet

Solution 2: Before importing the package, adjust the maximum recursion limit as shown below:

import sys
sys.setrecursionlimit(1500)
import pdf_generator_api_client
from pdf_generator_api_client.apis import *
from pdf_generator_api_client.models import *

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Python Client for PDF Generator API (Autogenerated from OpenAPI v3)

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