Windows customization can involve changing the overall visual style of the operating system or focusing on a specific interface element such as the taskbar. SecureUxTheme and RoundedTB represent these two different approaches. SecureUxTheme is an in-memory UxTheme patcher that enables third-party Windows visual styles, while RoundedTB is a taskbar customization utility designed to add margins, rounded corners, and segmented taskbar layouts.
This SecureUxTheme vs RoundedTB comparison examines their features, performance, compatibility, requirements, use cases, pros, and limitations without treating either application as a direct replacement for the other.
SecureUxTheme vs RoundedTB at a Glance
| Category | SecureUxTheme | RoundedTB |
| Primary purpose | Enable third-party Windows visual styles | Customize taskbar shape, spacing, and layout |
| Main customization area | Windows theme/visual-style system | Windows taskbar |
| Third-party visual styles | Yes | No |
| Rounded taskbar corners | Theme-dependent | Yes |
| Taskbar margins | Theme-dependent | Yes |
| Dynamic taskbar | Not its primary function | Yes, primarily on Windows 11 |
| Split taskbar | No | Yes, primarily on Windows 10 |
| Per-side margins | Not a core feature | Yes |
| System-file modification | No | No permanent system-file changes |
| Secure Boot | Supported | Not a primary feature |
| Windows 8.1 | Supported | Not the main target |
| Windows 10 | Supported | Supported, with feature limitations |
| Windows 11 | Supported through documented builds | Supported, with feature/build limitations |
| Typical use | Broad Windows theme customization | Taskbar-focused personalization |
| Open source | Yes | Yes |
SecureUxTheme describes itself as a Secure Boot-compatible, in-memory UxTheme patcher, while RoundedTB is designed specifically to add margins, rounded corners, and segments to Windows taskbars.
What Is SecureUxTheme?
SecureUxTheme is a Windows customization utility that removes signature verification for visual styles. Rather than replacing protected Windows system files, it patches UxTheme behavior in memory, allowing compatible third-party visual styles to be used.
The project lists several core characteristics:
- No system-file modifications.
- No driver requirement.
- Secure Boot compatibility.
- Support for multiple Windows architectures.
- A fix for certain LogonUI color-reset behavior after locking Windows.
SecureUxTheme itself does not provide the visual design. Its role is to enable custom themes. Users therefore need compatible third-party visual styles separately.
SecureUxTheme Features
- Third-party Windows visual-style support.
- In-memory UxTheme patching.
- No kernel driver.
- No modification of protected system files.
- Secure Boot compatibility.
- x86, x64, and ARM64 support on applicable Windows releases.
- Compatibility with Windows 8.1, Windows 10, Windows 11, and selected Windows Server versions.
The project’s current documentation lists Windows 11 support from RTM through 24H2, along with Windows Server 2025 and several earlier Windows Server releases. Future versions are listed as untested rather than guaranteed.
SecureUxTheme Limitations
SecureUxTheme is an enabling tool rather than an all-in-one customization suite. Its documentation explicitly notes that it makes no visual changes by itself; the appearance comes from the theme being applied.
Other considerations include:
- Themes need to be compatible with the user’s Windows version.
- Incorrect or incompatible themes can cause serious visual or login-related problems.
- Per-application theming is described by the project as close to impossible in the general case.
- Users looking for only taskbar adjustments may find its functionality broader than necessary.
What Is RoundedTB?
RoundedTB is a taskbar customization utility focused on changing the geometry and appearance of the Windows taskbar. Its basic controls include margins and corner radius, allowing the taskbar to appear separated from the edges of the screen and to have rounded corners.
The application also provides more advanced modes. On Windows 11, Dynamic Mode can automatically resize the taskbar around its icons, producing a dock-like segmented appearance. On Windows 10, Split Mode provides a more limited way to separate the taskbar from the system tray and resize it.
RoundedTB Features
- Adjustable taskbar margins.
- Custom corner radius.
- Independent margin controls.
- Windows 11 Dynamic Mode.
- Windows 10 Split Mode.
- Option to show or hide the system tray in dynamic/split layouts.
- Compatibility support for TranslucentTB.
- Configuration and debug logging.
- No permanent system changes; restarting Explorer can clear problems caused by the application.
RoundedTB’s documentation also describes customization options involving transparency and color and highlights its taskbar-focused design.
Feature Comparison
Windows Theme Customization
The most significant difference is the scope of customization.
SecureUxTheme operates at the Windows visual-style level. It enables third-party themes that can modify the appearance of multiple Windows interface components.
RoundedTB does not provide a general-purpose Windows theme engine. Its customization is concentrated on the taskbar.
As a result, SecureUxTheme is associated with broader visual-style changes, while RoundedTB is designed for targeted taskbar modifications.
Taskbar Customization
RoundedTB has a much more specialized feature set for taskbar geometry. Users can control margins and corner radius, while advanced modes can transform the taskbar into a dock-like or separated layout.
SecureUxTheme does not provide equivalent dedicated taskbar controls. A theme enabled through SecureUxTheme may alter the taskbar, but those changes depend on the selected visual style.
Dynamic and Split Modes
RoundedTB’s Dynamic Mode is primarily a Windows 11 feature. It can automatically resize the taskbar according to its contents. Windows 10 instead has Split Mode, which provides a simplified implementation because of differences in the Windows 10 taskbar.
SecureUxTheme does not have comparable dynamic or split taskbar functionality because its purpose is not taskbar layout management.
Performance and Resource Usage
The two applications have different performance profiles because they perform different tasks.
SecureUxTheme is an in-memory UxTheme patcher rather than a continuous taskbar-layout application. Its project specifically emphasizes that it does not modify system files and does not require a driver.
RoundedTB actively manages taskbar appearance and layout. Its release notes mention performance improvements and code refactoring, but its more advanced modes can encounter occasional resizing, update, or flickering problems.
Performance considerations can therefore include:
SecureUxTheme
- The patching mechanism itself is designed around in-memory operation.
- The visual complexity and behavior of the selected third-party theme can influence the overall desktop experience.
- Compatibility between a theme and a particular Windows build is an important consideration.
RoundedTB
- Basic margin and corner-radius adjustments are relatively focused operations.
- Dynamic and split modes perform additional taskbar management.
- The project documents occasional resizing and update problems in dynamic mode.
- Auto-hide can produce flickering, particularly when combined with advanced modes or other taskbar modifications.
Neither tool should be evaluated solely by its raw resource consumption because their functionality operates at different levels of Windows customization.
Compatibility and Requirements
SecureUxTheme Compatibility
The current SecureUxTheme documentation lists support for:
- Windows 8.1 x86/x64.
- Windows 10 x86/x64/ARM64.
- Windows 11 x86/x64/ARM64 from RTM through 24H2.
- Windows Server 2012 R2, 2016, 2019, 2022, and 2025 on supported architectures.
- Future versions on an untested basis.
For normal users, the most important requirement is selecting a third-party theme that matches the installed Windows release.
For developers building SecureUxTheme from source, the project lists Visual Studio Build Tools, the Windows 11 WDK and SDK, CMake, and WiX Toolset among its build requirements. These are development requirements, not requirements for ordinary users installing a released version.
RoundedTB Compatibility
RoundedTB has historically supported both Windows 10 and Windows 11, but its feature set differs between those operating systems.
Windows 11 provides Dynamic Mode, which automatically adjusts the taskbar around its icons. Windows 10 uses Split Mode as a simplified alternative.
The project also documents several compatibility constraints:
- Dynamic and split modes work correctly only with horizontal taskbars at the top or bottom of the screen.
- Windows 10 Split Mode is limited to the primary taskbar.
- Compatibility with other taskbar modifications is not universally guaranteed.
- Some TranslucentTB compatibility is supported through a specific integration path.
RoundedTB’s GitHub repository currently shows its R3.1 release as the latest listed release, with release notes describing both bug fixes and performance improvements.
Installation and Ease of Use
SecureUxTheme requires more awareness of Windows theming concepts because the application itself does not supply the visual design. Users need to find a compatible third-party visual style and understand how it relates to their Windows build. The project notes that SecureUxTheme is now configuration-free and that themes can be applied through Windows’ standard theme mechanisms or compatible tooling.
RoundedTB has a narrower configuration model. Basic customization can be performed by setting a margin and corner radius, while advanced users can configure independent margins, dynamic mode, split mode, and other taskbar behaviors.
This creates a difference in complexity:
- SecureUxTheme: more dependent on external themes and Windows-version compatibility.
- RoundedTB: more focused on direct taskbar configuration.
- Advanced RoundedTB modes: provide more customization but also introduce additional compatibility considerations.
Pros and Limitations
SecureUxTheme Pros
- Enables third-party Windows visual styles.
- Does not modify system files.
- Does not require a driver.
- Supports Secure Boot.
- Covers a broad range of Windows versions and architectures.
- Suitable for extensive Windows interface customization.
SecureUxTheme Limitations
- Does not provide visual themes by itself.
- Requires compatible third-party themes.
- Theme compatibility can vary by Windows build.
- More technical than a dedicated taskbar customization utility.
- Per-application theming has significant limitations.
- An incompatible theme can cause serious Windows-interface problems.
RoundedTB Pros
- Dedicated taskbar customization.
- Adjustable margins and corner radius.
- Independent margin controls.
- Windows 11 Dynamic Mode.
- Windows 10 Split Mode.
- Can create a dock-like segmented taskbar.
- Designed without permanent system changes.
- Includes support for working alongside certain taskbar customization tools.
RoundedTB Limitations
- Its scope is primarily the Windows taskbar.
- Advanced modes have additional compatibility restrictions.
- Dynamic and split modes are intended for horizontal taskbars.
- Windows 10 Split Mode has more limitations than Windows 11 Dynamic Mode.
- The project documents occasional resizing, updating, and flickering issues.
- Rounded corners are not antialiased because of a Windows limitation.
Use Cases
SecureUxTheme Is Suited to
- Applying third-party Windows visual styles.
- Creating a heavily customized Windows desktop.
- Modifying the broader visual appearance of Windows.
- Experimenting with custom theme designs.
- Theme enthusiasts who want customization beyond the taskbar.
RoundedTB Is Suited to
- Adding rounded corners to the Windows taskbar.
- Creating space between the taskbar and screen edges.
- Building a dock-like Windows 11 taskbar.
- Separating the taskbar from the system tray.
- Making focused taskbar adjustments without replacing the broader Windows visual style.
SecureUxTheme vs RoundedTB: Key Differences
The distinction between these utilities is primarily about customization scope.
- SecureUxTheme works with Windows’ visual-style system.
- RoundedTB works specifically with the taskbar.
- SecureUxTheme enables third-party themes but does not supply them.
- RoundedTB directly provides taskbar layout and geometry controls.
- SecureUxTheme supports a wider range of Windows versions, including Windows 8.1.
- RoundedTB focuses on Windows 10 and Windows 11.
- RoundedTB Dynamic Mode is designed around Windows 11’s taskbar.
- RoundedTB Split Mode provides a Windows 10-specific alternative.
- SecureUxTheme’s results depend substantially on the third-party visual style being applied.
- RoundedTB’s results depend on its configuration and the Windows taskbar implementation.
Conclusion
SecureUxTheme vs RoundedTB is ultimately a comparison between broad Windows visual-style customization and focused taskbar personalization. SecureUxTheme provides the infrastructure needed to use compatible third-party Windows visual styles, while RoundedTB concentrates on taskbar margins, rounded corners, segmentation, and dynamic layouts.
Their differences in features, requirements, compatibility, and potential limitations reflect these distinct purposes. SecureUxTheme is centered on the Windows theme system, whereas RoundedTB is centered on the taskbar. Understanding the intended customization area, Windows version, and desired level of control provides the clearest way to distinguish the two without treating either application as a universal replacement for the other.