Prgoress bars show the progression of a system operation: downloading, uploading, processing, etc., in a visual way. They can represent either determinate or indeterminate progress.
Progress bars are used to visually show the progression of a system operation such as downloading, uploading, processing, etc. By default, progress bars have a blue fill that shows the progress.
When a progress bar needs to be placed on top of a colored background, use the over background variant. This progress bar uses a static white color regardless of the color theme. Make sure the background offers enough contrast for the progress bar to be legible.
Progress bars should have a label that gives context about the operation being performed. In rare cases where context is sufficient and an accessibility expert has reviewed the design, the label could be undefined. These progress bars should still include an aria-label in HTML (depending on the context, “aria-label” or “aria-labelledby”). The label is always placed above the track.
Progress bars can have a value label that gives detailed information about the progress (e.g. "60%" or "2 of 8"). This value label works alongside the label and should not be displayed if the label itself is not displayed. It should also not be displayed if the progress is indeterminate. Similar to the label, the value label is always placed above the track.
The width of a progress bar can be customized appropriately for its context. The default width is size-2400 (192 px on desktop and 240 px on mobile).
Progress bars come in 2 sizes: large (default) and small. Use the large size when there is a single operation displayed prominently on the page. Use the small size when there are multiple operations happening at the same time in a more confined space (e.g., tables, cards, etc.)
A progress bar can be either determinate or indeterminate. By default, progress bars are determinate. Use a determinate progress bar when progress can be calculated against a specific goal (e.g., downloading a file of a known size). Use an indeterminate progress bar when progress is happening but the time or effort to completion can’t be determined (e.g., attempting to reconnect to a server).
The value shows the progress of a system operation, from 0 to 1, such as downloading, uploading, processing, etc. This is not applicable when a progress bar is indeterminate.
From the design point of view, each component has a number of options. These options and their names are platform agnostic, and each implementation should adapt these to fit into their framework.
default / over background
text / nothing
text / nothing
small / large
yes / no
number (0 to 1)
Not applicable when indeterminate.
When the label is too long for the available horizontal space, it wraps to form another line. The value is always shown in full and never wraps or truncates.
Both progress bars and circles can show either determinate or indeterminate progress. The given area should help determine if a progress bar or circle is best for that space. Progress bars are preferred in vertically narrow areas (tables, cards, etc.) Use a progress circle for full page loading or in very small areas. Use a progress bar in a loader dialog.
Use the built-in style for showing a label associated with the operation. The built-in style always has a left aligned label and a right aligned percentage value above the track. The label should be in sentence case.
Do use the built-in label style.
For RTL (right-to-left) languages, the layout of the progress bar is mirrored for both determinate and indeterminate options. The label is right-aligned, the value is left-aligned, and the fill progresses from right to left. Keep in mind that the placement of the percent sign differs depending on the locale.
|Apr 23, 2020||6.0.0|
|Dec 11, 2019||5.1.1|
|Aug 21, 2019||5.1.0|
|Apr 18, 2019||5.0.0|
Includes all interactive states that are applicable (hover, down, focus, keyboard focus, disabled).
Includes relevant options (variant, style, size, orientation, optional iconography, decorations, selection, error state, etc.)
Works properly across all four color themes (lightest, light, dark, darkest).
Includes a desktop scale (UWP, macOS, web desktop) and a mobile scale (iOS, Android, web mobile).
Includes guidelines for layout (wrapping, truncation, overflow), animation, interactions, etc.
Includes a list of dos and don’ts that highlight best practices and common mistakes.
Follows WCAG 2.0 standards for contrast (AA).
Works properly across various locales and includes guidelines for bi-directionality (RTL).
Follows WCAG 2.0 standards for keyboard accessibility guidelines and includes a description of the keyboard interactions.
Includes a downloadable XD file that has been generated by code and shows multiple variations, states, color themes, and scales.
All design attributes (color, typography, layout, animation, etc.) are included in Spectrum DNA.