Tap the file within the Slack conversation to open it.
Downloading a file in Slack is a simple process, but the steps vary slightly depending on whether you are using the desktop app, a web browser, or a mobile device. how to download a file in slack
Click on the file to open a preview window, then click the Download button located at the bottom or top-right of the preview. Tap the file within the Slack conversation to open it
Downloading on mobile requires a few extra taps to access the file menu. a web browser
Find the message containing the file in your channel or direct message.