A horizontal progress bar that visually communicates the real-time status of a system-level process with a known duration or measurable completion value. Used in non-interactive system feedback that is not tied to a user journey or step-by-step flow.
Best used for file uploads or downloads, data syncing or importing/exporting, software or system updates, report or export generation.

2. Linear Indeterminate

A looping animated horizontal bar that continuously moves to indicate the system is working, though the exact duration or progress cannot be determined. Best used for progress that cannot be measured and where the system is waiting for a response, such as page loading, first load of an app or feature where APIs are being called (loading transactions, messages, account details), initial connection to a server, software or app updates, or form submission.

3. Progress Circular Indeterminate

A looping, animated circular spinner that visually communicates that a process is happening, but does not and cannot indicate how much progress has been made or how long it will take. Best used for initial app or screen loading, waiting for a network request, processing a form submission, transitioning between views.