Auto wallpaper

Generate one PNG URL for iOS Shortcuts and let your lock screen update itself every day based on your date range.

iOS // Shortcuts

Wallpaper Settings

Wallpaper preview

Automation

  1. Open Shortcuts -> Automation -> New Automation -> Time of Day (daily)
  2. Select Run Immediately
  3. Create a new shortcut for that automation

Shortcut

  1. Add action: Get Contents of URL and paste the generated URL
  2. Add action: Set Wallpaper Photo and target Lock Screen
Important: In "Set Wallpaper Photo", disable both "Show Preview" and "Crop to Subject" so the automation runs without confirmation popups.