task · Mac, Windows
Photoshop Brush Size Shortcut
Use [ to decrease brush size and ] to increase brush size in Photoshop.
Reference table
Shortcut Library
Use this as the main reference: shortcut first, menu fallback second, and the note column for version or platform differences.
| Action | Mac | Windows / Web | Note |
|---|---|---|---|
| Decrease brush size | [ | [ | Works while a brush-like tool is active. |
| Increase brush size | ] | ] | Works while a brush-like tool is active. |
| Brush tool | B | B | Switch to Brush first. |
Menu Path Fallback
Select the Brush tool, then adjust Size in the options bar or Brush Settings panel.
Compatibility
Some international keyboard layouts make bracket shortcuts harder to access. Use Brush Settings when the keys are not available.
If It Does Not Work
- Make sure the app or browser tab is focused before pressing the shortcut.
- Check whether a system shortcut, browser extension, or custom keyboard setting is intercepting the keys.
- Use the menu path as a fallback when the shortcut is unavailable on your platform.
FAQ
Why do shortcuts differ between Mac and Windows?
Modifier keys, app versions, browser focus, and keyboard layouts can change the exact shortcut.
What should I do if a shortcut does not work?
Check whether the app window is focused, confirm the platform, try the menu path, and look for system-level shortcut conflicts.
Are these pages a replacement for official docs?
No. They are practical reference pages with links to official sources where version-specific details should be checked.