Convert HTML to PDF in Ruby

Quick Start

require 'net/http'
require 'json'
require 'uri'

uri = URI('https://html2pdfapi.com/render')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Post.new(uri)
request['Authorization'] = 'Bearer YOUR_API_KEY'
request['Content-Type'] = 'application/json'
request.body = {
  html: '<h1>Hello World</h1>',
  format: 'pdf'
}.to_json

response = http.request(request)
File.open('output.pdf', 'wb') { |f| f.write(response.body) }

Ruby on Rails Integration

# app/controllers/pdfs_controller.rb
class PdfsController < ApplicationController
  def generate
    html = render_to_string(
      template: 'invoices/show',
      layout: 'pdf',
      locals: { invoice: @invoice }
    )

    response = HTTParty.post(
      'https://html2pdfapi.com/render',
      headers: {
        'Authorization' => "Bearer #{ENV['HTML2PDFAPI_KEY']}",
        'Content-Type' => 'application/json'
      },
      body: {
        html: html,
        format: 'pdf',
        options: { format: 'A4' }
      }.to_json
    )

    send_data response.body,
      filename: 'invoice.pdf',
      type: 'application/pdf',
      disposition: 'attachment'
  end
end

Available Options