by ManuelLuellau·Workflow
Images © ManuelLuellau. Used for product review; image policy.
Stands out in the Blender extensions library because it focuses on prevention: it displays and explains warnings rather than resolving them for you, keeping the actual change in your hands.
HeadsUp Warnings is an add-on for Blender that surfaces UI warnings to help you avoid and resolve common mistakes. It overlays warnings in the 3D viewport and compositor, highlighting settings that are potentially destructive so you can catch them before they affect your work. The feedback comes through color-coded UI borders and direct on-screen messages, updating in real time.
The add-on ships with 50+ conditions to be warned about, and each can be toggled through the Addon Preferences. Many warnings are context-aware, appearing only when the relevant situation applies. Edit-Mode specific warnings, for instance, show only while you are in Edit-Mode. Alongside each warning, the add-on offers information about the issue and how to resolve it.
HeadsUp Warnings does not fix problems for you; there is no one-click resolve. Its role is to keep you aware of odd or easily forgotten settings. It supports Blender 4.2 LTS and newer, and the developer notes it can be installed in lower versions, tested down to Blender 3.3. It is distributed under the GNU General Public License v3.0 or later.
HeadsUp Warnings is best for blender users who want to catch odd or potentially destructive settings before they lead to mistakes.
HeadsUp Warnings is completely free to download and use.
HeadsUp Warnings is compatible with Blender 4.2 LTS and newer, which is its officially listed support range. The developer also notes the add-on can be installed in lower Blender versions and has tested it down to Blender 3.3, so it may run on older builds even though 4.2 and up is the supported target. If you are on a version below 4.2, expect to install it manually and verify the behaviour yourself. For the latest details, check the developer's page.
HeadsUp Warnings displays warnings and offers information about each warning and how to resolve it, but it does not resolve issues for you. There is no one-click fix. The add-on's role is to make you aware of settings that could lead to mistakes and to explain them, leaving the actual change in your hands. Some of these settings are applied willingly yet easy to forget about, which is exactly what the warnings are meant to surface.
HeadsUp Warnings requests a Files permission so it can check filepaths and validate whether textures are missing. This is the extension's only listed permission, and it supports the warning that flags missing texture files. Beyond that check, the add-on's focus is displaying on-screen warnings in the 3D viewport and compositor. If you want to review how it works, the developer's GitHub repository hosts the add-on's source code.
HeadsUp Warnings ships with 50+ conditions to be warned about, and each one can be toggled through the Addon Preferences. That means you can switch off any warning you do not want and keep the ones you find useful. Many warnings are also context-aware and only appear when the relevant situation applies. For example, Edit-Mode specific warnings show only while you are in Edit-Mode, which keeps the feedback tied to what you are doing.
HeadsUp Warnings is listed as free in this catalog and is distributed under the GNU General Public License v3.0 or later. Licensing terms can change, so check the developer's page for the current details before relying on them. The add-on can be added by dragging and dropping into Blender or by downloading and installing from disk. Its source is also available on the developer's GitHub repository if you want to inspect the code covered by that license.
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