Dimscan

A small library for extracting pixel dimensions for images hosted on web servers. Only loads whatever portion is necessary to determine the dimensions.

Installation

Add this line to your application's Gemfile:

gem 'dimscan'

And then execute:

$ bundle

Or install it yourself as:

$ gem install dimscan

Usage

scanner = Dimscan::JPEGScanner.new('https://example.com/image.jpg')
scanner.scan_dimensions
# => { width: 32, height: 32 }

At the moment only JPEG and PNG are supported.

Development

After checking out the repo, run bin/setup to install dependencies. Then, run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release to create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

1. Fork it ( https://github.com/[my-github-username]/dimscan/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request