3.0.0

• Allow to perform dimension / aspect_ratio validations on single page pdf (#374)
• Added pages validator to validate pdf number of pages.
• Added equal_to option to duration, size and total_size validators.

Version 3 comes with the ability to support single page pdf dimension / aspect_ratio analysis, we had to make a breaking change:

• To analyze PDFs, you must install the poppler PDF processing dependency
  • It's a Rails-supported PDF processing dependency (https://guides.rubyonrails.org/active_storage_overview.html#requirements)
  • To install it, check their documentation at this link.
  • To check if it's installed, execute pdftoppm -h.
  • To install this tool in your CI / production environments, you can check how we do it in our own CI (https://github.com/igorkasyanchuk/active_storage_validations/blob/master/.github/workflows/main.yml)

Note that, if you do not perform dimension / aspect_ratio validations on pdf, the gem will work the same as in version 2 without any breaking change.