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UVPackmaster: new efficient UV packing solution for Blender


glukoz writes:

We all know that the default Blender packing algorithm is far from being perfect. Other solutions may give better results, but either they don't integrate with Blender natively or they are written in Python so they are slow. That is the reason why the UVPackmaster add-on was created. The UVPackmaster is a new efficient UV packing solution for Blender 3D. Its main advantage is its robustness. which comes from the fact that the core of its algorithm was written in C++ and runs as a separate multi-threaded application.

UVPackmaster comes in two versions: the basic version which is available for free, but has limited functionality and the extended version which is paid, but provides full options. Both versions are available on gumroad.

You can watch the add-on presentation video here:


  1. I just downloaded UR UVPackmaster program and cannot seem to properly add it in blender's add-on preferences panel and U do not have any documentation on which file to add or anything? I have Windows 10 Blender 2.79b.

    Thanks Dave

    • I've just added a short installation procedure description on the product page on gumroad. Sorry for inconvenience. If you still are experiencing any issues write to us directly through gumroad. It will speed up the support process considerably.

      • Hi, GLUKOZ, I installed the basic addon, but do not see it in the Tools panel. It is marked as installed in User Preferences. I put the addon in my own folder and installed it in Blender from Preferences - could it be the reason, why it does not work?

        • I have the exact same problem , enabled in User preferences and it does not appear in the Tools panel.

          If it makes any difference I tried installing it by unzipping and importing at first and then I did it the correct way without unzipping and it appeared in the User preferences.

          Any fixes?

          • Yeah, what U have to do is, do not un-zip it, just click the install from file button from the preferences menu in the add-on menu and just enable it and save preferences and it's all done.

            Now, when U go back to blender to UV-unwrap something do what U always do then on the left of the tool bar U will see a new window in the tools menu (grease pencil and tools,) tools should already be selected by default and U will see UV-Packmaster and all it's menus :)

          • Are you sure you are looking for it in the UV editor's tools panel, not 3D view tools panel? Make sure you follow the installation procedure described on the product page, also note that manually unzipping the file is not necessary for plugin installation (and actually it is not recommended).

          • Do not un-zip it, just install it as is and enable it in the add-on panel in preferences and when U go back to UV-unwrapping on UR left will be a new tool panel and U will see UV_Packmaster and it's utilities :)

            (On mine, Blender 2.79 it says: "grease pencil & Tools")

          • I was looking in the wrong place, it´s in Edit mode, in the UV /image editor mode in the T tab of the window :) my bad :)

  2. What do you do if the rotation option is greyed out? (really half of the options are greyed out on mine)
    I have the latest version. 1.21

  3. after installing it and while checking the box i get an error message :
    "Traceback (most recent call last):
    File "C:\Program Files\Blender Foundation\Blender\2.79\scripts\modules\", line 331, in enable
    mod = __import__(module_name)
    File "C:\Users\Antony\AppData\Roaming\Blender Foundation\Blender\2.79\scripts\addons\uv_packmaster\", line 17, in
    from .os_windows import *
    File "C:\Users\Antony\AppData\Roaming\Blender Foundation\Blender\2.79\scripts\addons\uv_packmaster\", line 2, in
    from ctypes.util import find_library
    File "C:\Program Files\Blender Foundation\Blender\2.79\python\lib\ctypes\", line 7, in
    from _ctypes import Union, Structure, Array
    ImportError: DLL load failed: %1 ist keine zulässige Win32-Anwendung.

    i installed it the usual way and did nont unzip the file.

    what can i do to solve this? would realy love to try this

    • Hello

      Make sure you are using the latest Blender 2.8 build. If you still see errors even with the latest build then please let me know.


    • Hello

      I assume you are trying to run the add-on with Blender 2.8. Make sure you are using the latest Blender 2.8 build. If you still see errors even with the latest build then please let me know.


      • the blender version is blender 2.80 ad707115d5bc win64, the plugin version is uv_packmaster-pro-1.9-blend2.8-beta and uv_packmaster-pro-1.91.2-blend2.8-beta. What am I doing wrong? errors are the same as in the comment "ANTHONY on MAY 21, 2018 18:14 PM"

  4. I am trying to use bpy.ops.uvpackmaster2.uv_pack() in my python script, but getting an error

    RuntimeError: Error: Unexpected error
    Error: Traceback (most recent call last):
    File "C:\Users\mila\AppData\Roaming\Blender Foundation\Blender\2.80\scripts\addons\uvpackmaster2\", line 466, in execute
    File "C:\Program Files\Blender Foundation\Blender\2.80\scripts\modules\", line 674, in __getattribute__
    return super().__getattribute__(attr)
    AttributeError: 'UVP2_OT_PackOperator' object has no attribute 'p_context'

    Can you, plz, help with that?

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