diff --git a/.formatter.exs b/.formatter.exs
index 2bed17c..d2cda26 100644
--- a/.formatter.exs
+++ b/.formatter.exs
@@ -1,3 +1,4 @@
+# Used by "mix format"
 [
-  inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}"]
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
 ]
diff --git a/.gitignore b/.gitignore
index 0f8fa65..5d17e9b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,14 +1,14 @@
 # The directory Mix will write compiled artifacts to.
-/_build
+/_build/
 
 # If you run "mix test --cover", coverage assets end up here.
-/cover
+/cover/
 
 # The directory Mix downloads your dependencies sources to.
-/deps
+/deps/
 
-# Where 3rd-party dependencies like ExDoc output generated docs.
-/doc
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
 
 # Ignore .fetch files in case you like to edit your project deps locally.
 /.fetch
@@ -19,5 +19,11 @@ erl_crash.dump
 # Also ignore archive artifacts (built via "mix archive.build").
 *.ez
 
-# Ignore Mix lock file
+# Ignore package tarball (built via "mix hex.build").
+oembed-*.tar
+
+# Temporary files, for example, from tests.
+/tmp/
+
+# Ignore Mix lock file.
 mix.lock
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6168d41..32f0f0f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Change Log
 
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
 ## [0.4.1] - 2021-01-14
 ### Fixed
 - Call the youtube oembed with https ([@fatboypunk](https://github.com/fatboypunk))
@@ -29,7 +34,7 @@
 
 ## [0.1.1] - 2017-03-08
 ### Fixed
-- Fix crashing when URL is empty or nil. 
+- Fix crashing when URL is empty or nil.
 
 ## [0.1.0] - 2017-02-25
 
diff --git a/LICENSE b/LICENSE.md
similarity index 98%
rename from LICENSE
rename to LICENSE.md
index a5cf88e..bf449d3 100644
--- a/LICENSE
+++ b/LICENSE.md
@@ -1,4 +1,4 @@
-MIT License
+# MIT License
 
 Copyright (c) 2017 Sergey Storchay
 
diff --git a/README.md b/README.md
index fcf8026..520b7a8 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,11 @@
 # OEmbed
 
 [![CI](https://github.com/r8/elixir-oembed/workflows/CI/badge.svg)](https://github.com/r8/elixir-oembed/actions?query=workflow%3ACI)
-[![Hex.pm](https://img.shields.io/hexpm/v/oembed.svg?style=flat-square)](https://hex.pm/packages/oembed)
-[![Hex.pm](https://img.shields.io/hexpm/dt/oembed.svg?style=flat-square)](https://hex.pm/packages/oembed)
+[![Module Version](https://img.shields.io/hexpm/v/oembed.svg?style=flat-square)](https://hex.pm/packages/oembed)
+[![Hex Docs](https://img.shields.io/badge/hex-docs-lightgreen.svg?style=flat-square)](https://hexdocs.pm/oembed/)
+[![Total Download](https://img.shields.io/hexpm/dt/oembed.svg?style=flat-square)](https://hex.pm/packages/oembed)
+[![License](https://img.shields.io/hexpm/l/oembed.svg?style=flat-square)](https://github.com/r8/elixir-oembed/blob/master/LICENSE.md)
+[![Last Updated](https://img.shields.io/github/last-commit/r8/elixir-oembed.svg?style=flat-square)](https://github.com/r8/elixir-oembed/commits/master)
 
 oEmbed consumer library for Elixir applications.
 
@@ -20,11 +23,13 @@ Among them:
 
 ## Installation
 
-Add `oembed` to your list of dependencies in `mix.exs`:
+Add `:oembed` to your list of dependencies in `mix.exs`:
 
 ```elixir
 def deps do
-  [{:oembed, "~> 0.4.1"}]
+  [
+    {:oembed, "~> 0.4.1"}
+  ]
 end
 ```
 
@@ -41,3 +46,10 @@ You can implement modules that support provider behaviour and add them to the pr
 ```elixir
 config :oembed, :providers, [MyApp.OEmbed.SomeProvider, MyApp.OEmbed.SomeOtherProvider]
 ```
+
+## Copyright and License
+
+Copyright (c) 2017 Sergey Storchay
+
+Released under the MIT License, which can be found in the repository in
+[LICENSE.md](./LICENSE.md).
diff --git a/mix.exs b/mix.exs
index bf14265..1e0e8c3 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,6 +1,7 @@
 defmodule OEmbed.Mixfile do
   use Mix.Project
 
+  @source_url "https://github.com/r8/elixir-oembed"
   @version "0.4.1"
 
   def project do
@@ -10,16 +11,12 @@ defmodule OEmbed.Mixfile do
       elixir: "~> 1.11",
       build_embedded: Mix.env() == :prod,
       start_permanent: Mix.env() == :prod,
-      description: description(),
       package: package(),
       docs: docs(),
       deps: deps()
     ]
   end
 
-  # Configuration for the OTP application
-  #
-  # Type "mix help compile.app" for more information
   def application do
     [
       extra_applications: [:logger],
@@ -27,15 +24,6 @@ defmodule OEmbed.Mixfile do
     ]
   end
 
-  # Dependencies can be Hex packages:
-  #
-  #   {:my_dep, "~> 0.3.0"}
-  #
-  # Or git/path repositories:
-  #
-  #   {:my_dep, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
-  #
-  # Type "mix help deps" for more examples and options
   defp deps do
     [
       {:httpoison, ">= 0.9.0"},
@@ -52,24 +40,27 @@ defmodule OEmbed.Mixfile do
 
   defp docs do
     [
+      extras: [
+        "CHANGELOG.md": [title: "Changelog"],
+        "LICENSE.md": [title: "License"],
+        "README.md": [title: "Overview"]
+      ],
+      main: "readme",
       source_url: "https://github.com/r8/elixir-oembed",
       source_ref: "v#{@version}",
-      main: "readme",
-      extras: ["README.md"]
+      formatters: ["html"]
     ]
   end
 
-  defp description do
-    """
-    oEmbed consumer library for Elixir applications.
-    """
-  end
-
   defp package do
     [
+      description: "oEmbed consumer library for Elixir applications.",
       maintainers: ["Sergey Storchay"],
       licenses: ["MIT"],
-      links: %{"Github" => "https://github.com/r8/elixir-oembed"}
+      links: %{
+        "Changelog" => "https://hexodcs.pm/oembed/changelog.html",
+        "Github" => @source_url
+      }
     ]
   end
 end