Add a subtle "check-mark" or a "pulse" animation once the progress hits 100%.
If the file size is unknown, keep the bar spinning at a constant speed until the data starts flowing.
You can change colors (e.g., turning red if a download fails) or stroke thickness on the fly. 2. The Logic (The "How-To")
To build this procedurally, you typically use an with two circles stacked on top of each other: The Track: A static, light-gray circle.
), you can "push" the stroke around the circle based on the download percentage.