diff --git a/CHANGELOG.md b/CHANGELOG.md
index f7b4240..75f5e33 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+### `0.4.1`
+- #133 Write down to file when using the formatter
+
 ### `0.4.0`
 - #130 Split uploader from formatter
 
diff --git a/lib/codecov.rb b/lib/codecov.rb
index 17f5ade..50dc98e 100644
--- a/lib/codecov.rb
+++ b/lib/codecov.rb
@@ -11,7 +11,7 @@
 
 class SimpleCov::Formatter::Codecov
   def format(result, disable_net_blockers = true)
-    report = Codecov::SimpleCov::Formatter.format(result)
+    report = Codecov::SimpleCov::Formatter.new.format(result)
     Codecov::Uploader.upload(report, disable_net_blockers)
   end
 end
diff --git a/lib/codecov/formatter.rb b/lib/codecov/formatter.rb
index 7e27f4c..25689ed 100644
--- a/lib/codecov/formatter.rb
+++ b/lib/codecov/formatter.rb
@@ -4,122 +4,121 @@
 
 require_relative 'version'
 
-module Codecov::SimpleCov
-  class Formatter
-    def self.format(report)
-      result = {
-        'meta' => {
-          'version' => "codecov-ruby/v#{::Codecov::VERSION}"
+module Codecov
+  module SimpleCov
+    class Formatter
+      RESULT_FILE_NAME = 'codecov-result.json'
+
+      def format(report)
+        result = {
+          'meta' => {
+            'version' => "codecov-ruby/v#{::Codecov::VERSION}"
+          }
         }
-      }
-      result.update(result_to_codecov(report))
-      result
-    end
-
-    private
-
-    # Format SimpleCov coverage data for the Codecov.io API.
-    #
-    # @param result [SimpleCov::Result] The coverage data to process.
-    # @return [Hash]
-    def self.result_to_codecov(result)
-      {
-        'codecov' => result_to_codecov_report(result),
-        'coverage' => result_to_codecov_coverage(result),
-        'messages' => result_to_codecov_messages(result)
-      }
-    end
+        result.update(result_to_codecov(report))
 
-    def self.result_to_codecov_report(result)
-      report = file_network.join("\n").concat("\n")
-      report.concat({ 'coverage' => result_to_codecov_coverage(result) }.to_json)
-    end
-
-    def self.file_network
-      invalid_file_types = [
-        'woff', 'eot', 'otf', # fonts
-        'gif', 'png', 'jpg', 'jpeg', 'psd', # images
-        'ptt', 'pptx', 'numbers', 'pages', 'md', 'txt', 'xlsx', 'docx', 'doc', 'pdf', 'csv', # docs
-        'yml', 'yaml', '.gitignore'
-      ].freeze
-
-      invalid_directories = [
-        'node_modules/',
-        'public/',
-        'storage/',
-        'tmp/',
-        'vendor/'
-      ]
-
-      puts [green('==>'), 'Appending file network'].join(' ')
-      network = []
-      Dir['**/*'].keep_if do |file|
-        if File.file?(file) && !file.end_with?(*invalid_file_types) && invalid_directories.none? { |dir| file.include?(dir) }
-          network.push(file)
+        result_path = File.join(::SimpleCov.coverage_path, RESULT_FILE_NAME)
+        if File.writable?(result_path)
+          File.write(result_path, result['codecov'])
+          puts "Coverage report generated to #{result_path}.\#{result}"
+        else
+          puts "Could not write coverage report to file #{result_path}.\n#{result}"
         end
+
+        result
       end
 
-      network.push('<<<<<< network')
-      network
-    end
+      private
+
+      # Format SimpleCov coverage data for the Codecov.io API.
+      #
+      # @param result [SimpleCov::Result] The coverage data to process.
+      # @return [Hash]
+      def result_to_codecov(result)
+        {
+          'codecov' => result_to_codecov_report(result),
+          'coverage' => result_to_codecov_coverage(result),
+          'messages' => result_to_codecov_messages(result)
+        }
+      end
 
-    # Format SimpleCov coverage data for the Codecov.io coverage API.
-    #
-    # @param result [SimpleCov::Result] The coverage data to process.
-    # @return [Hash<String, Array>]
-    def self.result_to_codecov_coverage(result)
-      result.files.each_with_object({}) do |file, memo|
-        memo[shortened_filename(file)] = file_to_codecov(file)
+      def result_to_codecov_report(result)
+        report = file_network.join("\n").concat("\n")
+        report.concat({ 'coverage' => result_to_codecov_coverage(result) }.to_json)
       end
-    end
 
-    # Format SimpleCov coverage data for the Codecov.io messages API.
-    #
-    # @param result [SimpleCov::Result] The coverage data to process.
-    # @return [Hash<String, Hash>]
-    def self.result_to_codecov_messages(result)
-      result.files.each_with_object({}) do |file, memo|
-        memo[shortened_filename(file)] = file.lines.each_with_object({}) do |line, lines_memo|
-          lines_memo[line.line_number.to_s] = 'skipped' if line.skipped?
+      def file_network
+        invalid_file_types = [
+          'woff', 'eot', 'otf', # fonts
+          'gif', 'png', 'jpg', 'jpeg', 'psd', # images
+          'ptt', 'pptx', 'numbers', 'pages', 'md', 'txt', 'xlsx', 'docx', 'doc', 'pdf', 'csv', # docs
+          'yml', 'yaml', '.gitignore'
+        ].freeze
+
+        invalid_directories = [
+          'node_modules/',
+          'public/',
+          'storage/',
+          'tmp/',
+          'vendor/'
+        ]
+
+        network = []
+        Dir['**/*'].keep_if do |file|
+          if File.file?(file) && !file.end_with?(*invalid_file_types) && invalid_directories.none? { |dir| file.include?(dir) }
+            network.push(file)
+          end
         end
+
+        network.push('<<<<<< network')
+        network
       end
-    end
 
-    # Format coverage data for a single file for the Codecov.io API.
-    #
-    # @param file [SimpleCov::SourceFile] The file to process.
-    # @return [Array<nil, Integer>]
-    def self.file_to_codecov(file)
-      # Initial nil is required to offset line numbers.
-      [nil] + file.lines.map do |line|
-        if line.skipped?
-          nil
-        else
-          line.coverage
+      # Format SimpleCov coverage data for the Codecov.io coverage API.
+      #
+      # @param result [SimpleCov::Result] The coverage data to process.
+      # @return [Hash<String, Array>]
+      def result_to_codecov_coverage(result)
+        result.files.each_with_object({}) do |file, memo|
+          memo[shortened_filename(file)] = file_to_codecov(file)
         end
       end
-    end
 
-    # Get a filename relative to the project root. Based on
-    # https://github.com/colszowka/simplecov-html, copyright Christoph Olszowka.
-    #
-    # @param file [SimpleCov::SourceFile] The file to use.
-    # @return [String]
-    def self.shortened_filename(file)
-      file.filename.gsub(/^#{SimpleCov.root}/, '.').gsub(%r{^\./}, '')
-    end
-
-    # Convenience color methods
-    def self.black(str)
-      str.nil? ? '' : "\e[30m#{str}\e[0m"
-    end
+      # Format SimpleCov coverage data for the Codecov.io messages API.
+      #
+      # @param result [SimpleCov::Result] The coverage data to process.
+      # @return [Hash<String, Hash>]
+      def result_to_codecov_messages(result)
+        result.files.each_with_object({}) do |file, memo|
+          memo[shortened_filename(file)] = file.lines.each_with_object({}) do |line, lines_memo|
+            lines_memo[line.line_number.to_s] = 'skipped' if line.skipped?
+          end
+        end
+      end
 
-    def self.red(str)
-      str.nil? ? '' : "\e[31m#{str}\e[0m"
-    end
+      # Format coverage data for a single file for the Codecov.io API.
+      #
+      # @param file [SimpleCov::SourceFile] The file to process.
+      # @return [Array<nil, Integer>]
+      def file_to_codecov(file)
+        # Initial nil is required to offset line numbers.
+        [nil] + file.lines.map do |line|
+          if line.skipped?
+            nil
+          else
+            line.coverage
+          end
+        end
+      end
 
-    def self.green(str)
-      str.nil? ? '' : "\e[32m#{str}\e[0m"
+      # Get a filename relative to the project root. Based on
+      # https://github.com/colszowka/simplecov-html, copyright Christoph Olszowka.
+      #
+      # @param file [SimpleCov::SourceFile] The file to use.
+      # @return [String]
+      def shortened_filename(file)
+        file.filename.gsub(/^#{::SimpleCov.root}/, '.').gsub(%r{^\./}, '')
+      end
     end
   end
 end
diff --git a/lib/codecov/version.rb b/lib/codecov/version.rb
index 516a9dd..63acaac 100644
--- a/lib/codecov/version.rb
+++ b/lib/codecov/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Codecov
-  VERSION = '0.4.0'
+  VERSION = '0.4.1'
 end
diff --git a/test/test_codecov.rb b/test/test_codecov.rb
index a23c68e..8fca4b1 100644
--- a/test/test_codecov.rb
+++ b/test/test_codecov.rb
@@ -66,10 +66,10 @@ def upload(success = true)
     WebMock.enable!
     formatter = SimpleCov::Formatter::Codecov.new
     result = stub('SimpleCov::Result', files: [
-                    stub_file('/path/lib/something.rb', [1, 0, 0, nil, 1, nil]),
-                    stub_file('/path/lib/somefile.rb', [1, nil, 1, 1, 1, 0, 0, nil, 1, nil])
+                    stub_file('path/lib/something.rb', [1, 0, 0, nil, 1, nil]),
+                    stub_file('path/lib/somefile.rb', [1, nil, 1, 1, 1, 0, 0, nil, 1, nil])
                   ])
-    SimpleCov.stubs(:root).returns('/path')
+    SimpleCov.stubs(:root).returns('path')
     success_stubs if success
     data = formatter.format(result, false)
     puts data
@@ -665,10 +665,10 @@ def test_filenames_are_shortened_correctly
 
     formatter = SimpleCov::Formatter::Codecov.new
     result = stub('SimpleCov::Result', files: [
-                    stub_file('/path/lib/something.rb', []),
-                    stub_file('/path/path/lib/path_somefile.rb', [])
+                    stub_file('path/lib/something.rb', []),
+                    stub_file('path/path/lib/path_somefile.rb', [])
                   ])
-    SimpleCov.stubs(:root).returns('/path')
+    SimpleCov.stubs(:root).returns('path')
     data = formatter.format(result)
     puts data
     puts data['params']