by Berun·Modeling
Images © Berun. Used for product review; image policy.
SymTrz stands out in the Blender Extensions library for its real-time preview of the mirror direction, an approach drawn from the MeshMachine symmetrize workflow.
SymTrz is a real-time symmetrize preview tool built to make directional symmetry in Blender faster and more intuitive. It lets you instantly see which side will be mirrored, which is especially useful when working with rotated objects where the correct symmetrize direction can be unclear. The workflow was inspired by the symmetrize approach in MeshMachine.
In Object Mode the add-on provides a Mirror action, while Edit Mode offers Symmetrize and Remove. The hotkey and color are customizable, so you can adjust how the shortcuts and preview fit your setup. Version 2.2.4 added an Apply Modifier option to Mirror Mode.
SymTrz runs on Blender 4.2 LTS and newer and is released under the GNU General Public License v3.0 or later, requiring no special permissions. It sits at rank 633 in the Blender Extensions library. Installation is handled by dragging the add-on into Blender or installing the downloaded file from disk.
SymTrz is best for blender modelers working with mirror and symmetrize operations, particularly on rotated objects where the symmetry direction is hard to judge.
SymTrz is completely free to download and use.
SymTrz is compatible with Blender 4.2 LTS and newer, so it works with the current LTS release and later builds. The extension listing also notes it can work on Blender 3.5.1 and later, though the stated compatibility target is 4.2 LTS and up. If you're on an older version, check the developer's page for details before installing. The current release is version 2.2.4, published in April 2026.
SymTrz installs the same way as other Blender extensions. You can drag and drop the add-on file directly into Blender, or download the file and install it from disk through Blender's preferences. No special permissions are required to run it. Once enabled, the Mirror action is available in Object Mode, and Symmetrize and Remove options appear in Edit Mode, with the hotkey and color customizable to your preference.
SymTrz is listed as free in this catalog and is released under the GNU General Public License v3.0 or later. That license covers how you can use, modify, and redistribute the add-on. For current licensing terms or any updates, check the developer's page. The extension requires no special permissions, and its issue tracker is available on the developer's page for anyone who wants to report a problem or follow development.
SymTrz added an Apply Modifier option to Mirror Mode in version 2.2.4. In Object Mode the add-on provides its Mirror action, while Edit Mode covers Symmetrize and Remove. The real-time preview shows which side will be mirrored, which helps most when objects are rotated and the symmetrize direction is otherwise hard to judge. For the full version history, the developer's page tracks each release.
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