Message attachments let you send files in channel messages and private messages. A message can contain text, one or more files, or both.
Sending
Use the attachment button in the chat input, choose a file, wait for the upload to finish, then send the message.
Previews
Image attachments render as inline thumbnails. Audio and video attachments are played back in the message, PDF files expose a preview action, and other files render as safe file cards with type, size and path metadata.
Unsafe browser-rendered formats, including SVG and HTML, are kept as downloadable files instead of inline previews.
Playing Sound and Video
Audio and video are played back in a small media player that looks like Hex Radio. Its display shows the name, the elapsed time and the length, the spectrum of a sound, and a slider to jump to another moment.
- The buttons under the display play the sound, pause it where it is, and stop it at the start
- The mute button turns the sound off without stopping it
- A video has one more button, which fills the screen; Esc goes back
- Only one sound is heard at a time. Starting a new sound puts the old one on pause and switches Hex Radio off
File Paths
Uploaded files are stored with a logical directory path so administrators can browse them later without depending on the storage bucket's internal object keys.
Access
Downloads are authorized by the chat server first. If access is allowed, the server redirects to a short-lived signed storage URL.