Share a file in a channel

1. Choose the plus button at the left of the composer, Add attachment and tools.
2. Under Attach, choose Upload photos & files to pick from this device, Upload from Drive to reuse a file you already have, or Attach video for video. A video chosen with Upload photos & files is sent the same way as Attach video.
3. Wait for the staged chip to finish uploading.
4. Add a message if you want one, and send.

You can also drag files onto the message pane. The drop area names the conversation receiving them. Dragging works in a thread panel too. Dropped or pasted videos are uploaded as videos automatically. Pasting an image from the clipboard attaches it and announces Image attached from clipboard.

Reuse a file from Drive

Upload from Drive opens a picker: Choose an existing file to attach without uploading it again. Search with Search files, then choose Attach on the row. Attached rows change to Attached. Folders are not offered.

Limits

• At most 10 files per message, and at most 10 videos per message.
• At most 50 GB per file.
• Video is restricted to MP4, WebM, QuickTime, MPEG, and Matroska. Everything else is checked against the platform's file-type catalogue when the upload starts, so there is no fixed list to consult here.

What happens after you send

The file is scanned before anybody else can open it. While that runs, your own copy reads Scanning — visible to others shortly and the card shows Processing with Scan in progress. When it finishes the card shows Clean and offers Download. If the scan blocks the file the card reads Quarantined with Download blocked, and the sender sees Blocked — recipients cannot access this file.

Images appear in the message. A message with several images becomes a gallery; if some are hidden, its last tile shows how many more there are. Choosing an image opens it full size. Use the left and right arrow keys to move between images, plus and minus to zoom, and zero to reset.

Every file you send is also listed on the channel's Files tab. See The Files tab.

If it did not work

• An attach-limit message means the message already has the maximum number of files or videos. Send it and start another.
• Choose a video under 50 GB. or Choose an MP4, WebM, MOV, MPEG, or MKV video. means the video is too large or in an unsupported format. That video is not uploaded; other files you chose still upload.
• This file type is not available for this release phase. means the file-type catalogue rejects it.
• Choose a non-empty file. means the file has no content.
• Finish or remove file uploads before sending means a chip is still uploading. Wait, or use the chip's cancel control.
• Upload failed. Try again. on a chip offers a retry control on the chip itself.