Image to PDF / Ruby Examples
This page contains various examples of using the Image to PDF API in Ruby. The examples are complete and fully functional. Read more about how to convert Image to PDF in Ruby.
Basic examples
- PNG file to PDF file
- PNG file to in-memory PDF
- PNG file to PDF stream
- PNG url to PDF file
- PNG url to in-memory PDF
- PNG url to PDF stream
- In-memory PNG to PDF file
- In-memory PNG to in-memory PDF
- In-memory PNG to PDF stream
- Get info about the current conversion
Rails examples
Basic examples
PNG file to PDF file
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Run the conversion and save the result to a file. client.convertFileToFile("/path/to/logo.png", "logo.pdf") rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
PNG file to in-memory PDF
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Run the conversion and store the result in the `pdf` variable. pdf = client.convertFile("/path/to/logo.png") # at this point the "pdf" variable contains PDF raw data and # can be sent in an HTTP response, saved to a file, etc. rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
PNG file to PDF stream
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Create an output stream for the conversion result output_stream = open("logo.pdf", "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() rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
PNG url to PDF file
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Run the conversion and save the result to a file. client.convertUrlToFile("https://pdfcrowd.com/static/images/logo.png", "logo.pdf") rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
PNG url to in-memory PDF
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Run the conversion and store the result in the `pdf` variable. pdf = client.convertUrl("https://pdfcrowd.com/static/images/logo.png") # at this point the "pdf" variable contains PDF raw data and # can be sent in an HTTP response, saved to a file, etc. rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
PNG url to PDF stream
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Create an output stream for the conversion result output_stream = open("logo.pdf", "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() rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
In-memory PNG to PDF file
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Run the conversion and save the result to a file. client.convertRawDataToFile(open('/path/to/logo.png', 'rb').read(), "logo.pdf") rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
In-memory PNG to in-memory PDF
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Run the conversion and store the result in the `pdf` variable. pdf = client.convertRawData(open('/path/to/logo.png', 'rb').read()) # at this point the "pdf" variable contains PDF raw data and # can be sent in an HTTP response, saved to a file, etc. rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
In-memory PNG to PDF stream
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Create an output stream for the conversion result output_stream = open("logo.pdf", "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() rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
Get info about the current conversion
require "pdfcrowd" begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Configure the conversion. client.setDebugLog(true) # Run the conversion and save the result to a file. client.convertFileToFile("/path/to/logo.png", "logo.pdf") # print URL pointing to the debug log for this request. puts "Debug log url: #{client.getDebugLogUrl()}" # print number of conversion credits remaining in your account. puts "Remaining credit count: #{client.getRemainingCreditCount()}" # print number of credits consumed for this conversion. puts "Consumed credit count: #{client.getConsumedCreditCount()}" # print unique identifier assigned to this conversion job. puts "Job id: #{client.getJobId()}" # print size of the output data in bytes. puts "Output size: #{client.getOutputSize()}" rescue Pdfcrowd::Error => why STDERR.puts "PDFCrowd Error: #{why}" raise end
Rails examples
PNG file to PDF in Rails
require "pdfcrowd" class DemoController < ApplicationController def convert # The recommended method is POST. # may be restricted by ":via => :post" in your routes.rb if ! request.post? return render text: "POST is allowed only", status: 400 end begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Run the conversion and store the result in the `pdf` variable. pdf = client.convertFile("/path/to/logo.png") # Send the result and set HTTP response headers. send_data pdf, :type => "application/pdf", :disposition => "attachment; filename*=UTF-8''#{ERB::Util.url_encode('logo.pdf')}" rescue Pdfcrowd::Error => why # Send the error in the HTTP response. render plain: why, status: why.getCode() end end end
PNG url to PDF in Rails
require "pdfcrowd" class DemoController < ApplicationController def convert # The recommended method is POST. # may be restricted by ":via => :post" in your routes.rb if ! request.post? return render text: "POST is allowed only", status: 400 end begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Run the conversion and store the result in the `pdf` variable. pdf = client.convertUrl("https://pdfcrowd.com/static/images/logo.png") # Send the result and set HTTP response headers. send_data pdf, :type => "application/pdf", :disposition => "attachment; filename*=UTF-8''#{ERB::Util.url_encode('logo.pdf')}" rescue Pdfcrowd::Error => why # Send the error in the HTTP response. render plain: why, status: why.getCode() end end end
In-memory PNG to PDF in Rails
require "pdfcrowd" class DemoController < ApplicationController def convert # The recommended method is POST. # may be restricted by ":via => :post" in your routes.rb if ! request.post? return render text: "POST is allowed only", status: 400 end begin # Create an API client instance. client = Pdfcrowd::ImageToPdfClient.new("demo", "demo") # Run the conversion and store the result in the `pdf` variable. pdf = client.convertRawData(open('/path/to/logo.png', 'rb').read()) # Send the result and set HTTP response headers. send_data pdf, :type => "application/pdf", :disposition => "attachment; filename*=UTF-8''#{ERB::Util.url_encode('logo.pdf')}" rescue Pdfcrowd::Error => why # Send the error in the HTTP response. render plain: why, status: why.getCode() end end end