KDA Custom Upload Structure

Custom Upload Structure lets you store uploaded files outside the standard
wp-content/uploads directory — for example in assets/public/ at the site
root — and organize them the way you want.

Features:

• Custom upload location. Store all media in any folder relative to the
  site root instead of wp-content/uploads.
• Organize by post type. Files are placed into subfolders named after the
  post type they belong to (e.g. assets/public/films/). Unattached files go
  into a configurable “others” subfolder.
• Year / month folders. Keep the default WordPress year/month structure
  inside your custom folder.
• Transliteration. Convert Cyrillic and other non-Latin file names to
  Latin characters on upload (e.g. a Cyrillic file name is converted to its
  Latin equivalent).
• Post ID prefix. Optionally prefix each file name with the ID of the post
  it is uploaded to (e.g. post 42 → 42-photo.jpg). Off by default.
• Migration tool. Move existing media between the default folder and your
  custom structure (and back) without breaking the Media Library. Includes a
  dry run, optional replacement of old URLs inside post content, and a retry
  mode for failed items.
• Safety. The upload folder is protected with an index.php stub, file
  permissions are normalized, and a full backup is required before any move.

All behaviour is controlled from Settings → Upload Structure.