Saving files from messaging apps means permanently storing photos, videos, documents, or other files received via platforms like WhatsApp, Slack, or Telegram onto your own device (phone, computer, or cloud storage like iCloud/Google Drive/Dropbox). Unlike viewing the file within the app, saving it creates an independent copy you can access without the original app. The process typically involves tapping/holding the file icon within the specific chat or channel where it was shared, then selecting an option like "Save to Phone", "Download", or "Save to Files".

For instance, you might save a project PDF document sent through Microsoft Teams to your computer's hard drive for offline review. Similarly, you could download vacation photos shared via WhatsApp onto your phone's gallery to edit and share elsewhere. Professionals frequently save client contracts or images received through Slack directly to linked cloud storage services like Google Drive.

The key advantages are offline access and using files outside the messaging app. Limitations include consuming storage space on your device and potential app-specific restrictions on file size or types that can be downloaded (e.g., disappearing messages). Security is a consideration: saving sensitive files locally requires diligent device protection, and users should be cautious about saving files from untrusted sources to avoid malware risks.