<%= image_tag 'logo.png' %>

<img src="/assets/logo.png" width="230" height="80">

It uses dimensions by @sstephenson to add automatic images size and improve browser rendering.

See: https://developers.google.com/speed/docs/best-practices/rendering#SpecifyImageDimensions

Add this line to your application's Gemfile:

gem 'dimensions-rails'

Just use the image_tag rails helper as usual, the :size options will be magically added by dimensions-rails elves!

If for any reason you need to disable dimensions-rails just pass :dimensions => false to image_tag.

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push -u origin my-new-feature)
5. Create new Pull Request