Allow PDF attachments in notifications

[golles]

According to the docs, this is not supported, hence asking for this feature.

I've attached a PDF as an image showing a thumbnail image, so this part is already working. Long pressing the notification to preview the PDF doesn't work, it looks like it tries to play a video.

See the image below, first is the notification, with a preview and the second is after long pressing the notification.

Config:

service: notify.sander
data:
  title: 🏊 Veel plezier met zwemmen!
  message: >-
    Klik voor de tickets
  data:
    tag: leeghwaterbad
    image: >-
      {{ state_attr("sensor.leeghwaterbad_volgende_bestelling", "ticket")}}
    url: >-
      {{ state_attr("sensor.leeghwaterbad_volgende_bestelling", "ticket")}}

I've tried different content-type, including pdf, to experiment, but none did change the behaviour mentioned above.

[robbiet480]

Apple doesn't support PDF as an attachment to a notification, you should open a Feedback with them and see if they'll add it. Supported file types are available at https://developer.apple.com/documentation/usernotifications/unnotificationattachment#1682051

[golles]

Thanks for answering @robbiet480, I assumed with a working thumbnail that the restriction was the companion app