Image to Image / Python Examples

This page contains various examples of using the Image to Image API in Python. The examples are complete and fully functional. Read more about how to convert Image to Image in Python.

Basic examples
Django examples
Flask examples

Basic examples

PNG file to JPEG file

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')

    # Run the conversion and save the result to a file.
    client.convertFileToFile('/path/to/logo.png', 'logo.jpg')

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

PNG file to in-memory JPEG

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')

    # Run the conversion and store the result in the `image` variable.
    image = client.convertFile('/path/to/logo.png')

    # at this point the "image" variable contains JPG raw data and
    # can be sent in an HTTP response, saved to a file, etc.

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

PNG file to JPEG stream

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')

    # Create an output stream for the conversion result
    output_stream = open('logo.jpg', 'wb')

    # run the conversion and write the result to the output stream.
    client.convertFileToStream('/path/to/logo.png', output_stream)

    # Close the output stream.
    output_stream.close()

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

PNG url to JPEG file

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')

    # Run the conversion and save the result to a file.
    client.convertUrlToFile('https://pdfcrowd.com/static/images/logo.png', 'logo.jpg')

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

PNG url to in-memory JPEG

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')

    # Run the conversion and store the result in the `image` variable.
    image = client.convertUrl('https://pdfcrowd.com/static/images/logo.png')

    # at this point the "image" variable contains JPG raw data and
    # can be sent in an HTTP response, saved to a file, etc.

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

PNG url to JPEG stream

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')

    # Create an output stream for the conversion result
    output_stream = open('logo.jpg', 'wb')

    # run the conversion and write the result to the output stream.
    client.convertUrlToStream('https://pdfcrowd.com/static/images/logo.png', output_stream)

    # Close the output stream.
    output_stream.close()

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

In-memory PNG to JPEG file

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')

    # Run the conversion and save the result to a file.
    client.convertRawDataToFile(open('/path/to/logo.png', 'rb').read(), 'logo.jpg')

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

In-memory PNG to in-memory JPEG

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')

    # Run the conversion and store the result in the `image` variable.
    image = client.convertRawData(open('/path/to/logo.png', 'rb').read())

    # at this point the "image" variable contains JPG raw data and
    # can be sent in an HTTP response, saved to a file, etc.

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

In-memory PNG to JPEG stream

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')

    # Create an output stream for the conversion result
    output_stream = open('logo.jpg', 'wb')

    # run the conversion and write the result to the output stream.
    client.convertRawDataToStream(open('/path/to/logo.png', 'rb').read(), output_stream)

    # Close the output stream.
    output_stream.close()

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

Get info about the current conversion

import pdfcrowd
import sys

try:
    # Create an API client instance.
    client = pdfcrowd.ImageToImageClient('demo', 'demo')

    # Configure the conversion.
    client.setOutputFormat('jpg')
    client.setDebugLog(True)

    # Run the conversion and save the result to a file.
    client.convertFileToFile('/path/to/logo.png', 'logo.jpg')
    
    # print URL pointing to the debug log for this request.
    print('Debug log url: {}'.format(client.getDebugLogUrl()))
    
    # print number of conversion credits remaining in your account.
    print('Remaining credit count: {}'.format(client.getRemainingCreditCount()))
    
    # print number of credits consumed for this conversion.
    print('Consumed credit count: {}'.format(client.getConsumedCreditCount()))
    
    # print unique identifier assigned to this conversion job.
    print('Job id: {}'.format(client.getJobId()))
    
    # print size of the output data in bytes.
    print('Output size: {}'.format(client.getOutputSize()))

except pdfcrowd.Error as why:
    sys.stderr.write('PDFCrowd Error: {}\n'.format(why))
    raise

Django examples

PNG file to JPEG in Django

import urllib.parse
from django.http import HttpResponse
from django.views.decorators.http import require_POST
import pdfcrowd

# The recommended method is POST.
@require_POST
def convert(request):
    try:
        # Create an API client instance.
        client = pdfcrowd.ImageToImageClient('demo', 'demo')

        # Configure the conversion.
        client.setOutputFormat('jpg')

        # Set HTTP response headers.
        response = HttpResponse(content_type='image/jpeg')
        response['Cache-Control'] = 'max-age=0'
        response['Accept-Ranges'] = 'none'
        response['Content-Disposition'] = "attachment; filename*=UTF-8''" + urllib.parse.quote('logo.jpg', safe='')

        # run the conversion and write the result to the output stream.
        client.convertFileToStream('/path/to/logo.png', response)
        return response
    except pdfcrowd.Error as why:
        # Send the error in the HTTP response.
        return HttpResponse(
            why, status=why.getStatusCode(), content_type='text/plain')

PNG url to JPEG in Django

import urllib.parse
from django.http import HttpResponse
from django.views.decorators.http import require_POST
import pdfcrowd

# The recommended method is POST.
@require_POST
def convert(request):
    try:
        # Create an API client instance.
        client = pdfcrowd.ImageToImageClient('demo', 'demo')

        # Configure the conversion.
        client.setOutputFormat('jpg')

        # Set HTTP response headers.
        response = HttpResponse(content_type='image/jpeg')
        response['Cache-Control'] = 'max-age=0'
        response['Accept-Ranges'] = 'none'
        response['Content-Disposition'] = "attachment; filename*=UTF-8''" + urllib.parse.quote('logo.jpg', safe='')

        # run the conversion and write the result to the output stream.
        client.convertUrlToStream('https://pdfcrowd.com/static/images/logo.png', response)
        return response
    except pdfcrowd.Error as why:
        # Send the error in the HTTP response.
        return HttpResponse(
            why, status=why.getStatusCode(), content_type='text/plain')

In-memory PNG to JPEG in Django

import urllib.parse
from django.http import HttpResponse
from django.views.decorators.http import require_POST
import pdfcrowd

# The recommended method is POST.
@require_POST
def convert(request):
    try:
        # Create an API client instance.
        client = pdfcrowd.ImageToImageClient('demo', 'demo')

        # Configure the conversion.
        client.setOutputFormat('jpg')

        # Set HTTP response headers.
        response = HttpResponse(content_type='image/jpeg')
        response['Cache-Control'] = 'max-age=0'
        response['Accept-Ranges'] = 'none'
        response['Content-Disposition'] = "attachment; filename*=UTF-8''" + urllib.parse.quote('logo.jpg', safe='')

        # run the conversion and write the result to the output stream.
        client.convertRawDataToStream(open('/path/to/logo.png', 'rb').read(), response)
        return response
    except pdfcrowd.Error as why:
        # Send the error in the HTTP response.
        return HttpResponse(
            why, status=why.getStatusCode(), content_type='text/plain')

Flask examples

PNG file to JPEG in Flask

import urllib.parse
from flask import Flask, Response
import pdfcrowd

app = Flask(__name__)

# The recommended method is POST.
@app.route('/', methods=['POST'])
def convert():
    try:
        # Create an API client instance.
        client = pdfcrowd.ImageToImageClient('demo', 'demo')

        # Configure the conversion.
        client.setOutputFormat('jpg')

        # Run the conversion and store the result in the `image` variable.
        image = client.convertFile('/path/to/logo.png');

        # Send the result and set HTTP response headers.
        response = Response(image, mimetype='image/jpeg')
        response.headers['Cache-Control'] = 'max-age=0'
        response.headers['Accept-Ranges'] = 'none'
        response.headers['Content-Disposition'] = "attachment; filename*=UTF-8''" + urllib.parse.quote('logo.jpg', safe='')
        return response
    except pdfcrowd.Error as why:
        # Send the error in the HTTP response.
        return Response(
            str(why), status=why.getStatusCode(), mimetype='text/plain')

PNG url to JPEG in Flask

import urllib.parse
from flask import Flask, Response
import pdfcrowd

app = Flask(__name__)

# The recommended method is POST.
@app.route('/', methods=['POST'])
def convert():
    try:
        # Create an API client instance.
        client = pdfcrowd.ImageToImageClient('demo', 'demo')

        # Configure the conversion.
        client.setOutputFormat('jpg')

        # Run the conversion and store the result in the `image` variable.
        image = client.convertUrl('https://pdfcrowd.com/static/images/logo.png');

        # Send the result and set HTTP response headers.
        response = Response(image, mimetype='image/jpeg')
        response.headers['Cache-Control'] = 'max-age=0'
        response.headers['Accept-Ranges'] = 'none'
        response.headers['Content-Disposition'] = "attachment; filename*=UTF-8''" + urllib.parse.quote('logo.jpg', safe='')
        return response
    except pdfcrowd.Error as why:
        # Send the error in the HTTP response.
        return Response(
            str(why), status=why.getStatusCode(), mimetype='text/plain')

In-memory PNG to JPEG in Flask

import urllib.parse
from flask import Flask, Response
import pdfcrowd

app = Flask(__name__)

# The recommended method is POST.
@app.route('/', methods=['POST'])
def convert():
    try:
        # Create an API client instance.
        client = pdfcrowd.ImageToImageClient('demo', 'demo')

        # Configure the conversion.
        client.setOutputFormat('jpg')

        # Run the conversion and store the result in the `image` variable.
        image = client.convertRawData(open('/path/to/logo.png', 'rb').read());

        # Send the result and set HTTP response headers.
        response = Response(image, mimetype='image/jpeg')
        response.headers['Cache-Control'] = 'max-age=0'
        response.headers['Accept-Ranges'] = 'none'
        response.headers['Content-Disposition'] = "attachment; filename*=UTF-8''" + urllib.parse.quote('logo.jpg', safe='')
        return response
    except pdfcrowd.Error as why:
        # Send the error in the HTTP response.
        return Response(
            str(why), status=why.getStatusCode(), mimetype='text/plain')