Rack::Manifest

This is a Rack middleware for managing your HTML5 manifest file (used for Service Worker, WebApp Icon, etc.) by yaml. It can be easily implemented into your Rails application.

Add this line to your application's Gemfile:

gem 'rack-manifest'

• Set manifest.yml file like this one into your config directory.
• After restarting server, you can see the converted manifest file on /manifest.json path.
• ERB format and asset path helpers are available.

name: Rack Manifest
short_name: Manifest
icons: 
  - src: <%= image_path('icon.png') %>
    sizes: 512x512
    type: image/png
start_url: /
display: standalone

The gem is available as open source under the terms of the MIT License.