Instead of downloading PDF, how to force PDF to open/view in browser only?

thoka · March 4, 2023, 8:45am

Inline PDF does not work for me on desktop either.

I’m partially successful displaying PDFs inline when adding them to FileHelper.inline_images

discourse/discourse/blob/1c9f300896b06d736381f976f49dbfc767a7b958/lib/file_helper.rb#L164-L167


      
          def self.inline_images
            # SVG cannot safely be shown as a document
            @@inline_images ||= supported_images - %w[svg]
          end

But then a parameter “inline=1” is needed:

github.com

discourse/discourse/blob/1c9f300896b06d736381f976f49dbfc767a7b958/app/controllers/uploads_controller.rb#L323-L327


      
          if !FileHelper.is_inline_image?(upload.original_filename)
            opts[:disposition] = "attachment"
          elsif params[:inline]
            opts[:disposition] = "inline"
          end

This could be added in some theme-component (Inline PDF Previews).

I would like to learn a clean way to switch discourse to serve PDFs with content-disposition: inline using a plugin or a configuration option.

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Instead of downloading PDF, how to force PDF to open/view in browser only?

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