How to convert an EML file into a Thumbnail PNG Image in Python

Today, I will be showing you Python users out there a super simple way of converting EML files into customizable thumbnails. Forget all those potential pitfalls that can easily arise from the many-stepped process that would normally be required. All that can be done for us by a thumbnail API, which I will demonstrate for you now.

Let’s install that client as our first step now.

pip install cloudmersive-convert-api-client

Moving right along, our next step is a simple function call for the thumbnail function from that client. Note that it automatically detects the incoming format, and works with many other formats besides EML.

from __future__ import print_function
import time
import cloudmersive_convert_api_client
from cloudmersive_convert_api_client.rest import ApiException
from pprint import pprint
# Configure API key authorization: Apikey
configuration = cloudmersive_convert_api_client.Configuration()
configuration.api_key['Apikey'] = 'YOUR_API_KEY'
# Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
# configuration.api_key_prefix['Apikey'] = 'Bearer'
# create an instance of the API class
api_instance = cloudmersive_convert_api_client.ConvertDocumentApi(cloudmersive_convert_api_client.ApiClient(configuration))
input_file = '/path/to/file' # file | Input file to perform the operation on.
max_width = 56 # int | Optional; Maximum width of the output thumbnail - final image will be as large as possible while less than or equal to this width. Default is 128. (optional)
max_height = 56 # int | Optional; Maximum height of the output thumbnail - final image will be as large as possible while less than or equal to this width. Default is 128. (optional)
extension = 'extension_example' # str | Optional; Specify the file extension of the inputFile. This will improve the response time in most cases. Also allows unsupported files without extensions to still return a corresponding generic icon. (optional)
try:
# Convert File to Thumbnail Image
api_response = api_instance.convert_document_autodetect_to_thumbnail(input_file, max_width=max_width, max_height=max_height, extension=extension)
pprint(api_response)
except ApiException as e:
print("Exception when calling ConvertDocumentApi->convert_document_autodetect_to_thumbnail: %s\n" % e)

Done.