by CosmoMídias·Workflow
Images © CosmoMídias. Used for product review; image policy.
Earns its place in the blender_extensions library for a focused job: automatic, scheduled swapping between light and dark themes, with safe fallbacks and a timer that survives restarts.
Time Theme Switcher automates the change between light and dark interface themes in Blender based on the time of day. You configure independent activation times for each theme, with defaults of 07:00 for light and 19:00 for dark, entered in 24-hour format.
For each mode you pick an interface preset file, either one of the *.xml presets shipped with Blender or one of your own. The add-on scans Blender's preset directories, so stock files such as Blender_Light.xml and Blender_Dark.xml show up automatically in the menus. A background timer keeps the correct theme active, including after you reopen Blender, and reschedules itself whenever you adjust the times.
Internally, each schedule is converted into minutes since midnight to determine whether the current time falls in the light or dark window. If a schedule is invalid or a preset is missing, the add-on reverts to Blender's stock themes. Released under the GNU General Public License v3.0 or later, it requires Blender 3.6.0 or newer and has been tested up to Blender 5.1.
Time Theme Switcher is best for blender users who want the interface to swap between light and dark themes automatically at set times of day.
Time Theme Switcher is completely free to download and use.
Time Theme Switcher requires Blender 3.6.0 or newer and has been tested up to Blender 5.1, and it's listed as compatible with Blender 4.2 LTS and newer. Once enabled from the add-ons preferences, it manages theme switching in the background regardless of which supported release you run. Version 1.0.0 is the initial release, published in November 2025. If you upgrade Blender or run into a version-specific problem, the developer's GitLab page is the place to report it.
Time Theme Switcher can be added by dragging it into Blender or installing it from disk, then it's configured under Edit → Preferences → Add-ons → Interface. Check the Time Theme Switcher entry to turn on automatic switching, then pick your light and dark preset files from the menu buttons. Set the activation times in 24-hour format, keeping the defaults of 07:00 and 19:00 or entering your own. After a large change to the system clock, click Refresh so the timer recalculates immediately.
Time Theme Switcher lets you assign an interface preset file to each mode. You can choose any *.xml preset that ships with Blender or one of your own. The add-on scans Blender's preset directories, so stock files such as Blender_Light.xml and Blender_Dark.xml appear automatically in the menus. You can also use the preset menus to switch to a different theme file manually at any time, independent of the schedule you have set.
Time Theme Switcher is listed as free here, and it's released under the GNU General Public License v3.0 or later, with the full text and your rights set out in the license file. The reviews also mention that a Pro edition with multiple themes and multiple schedulers is offered separately by CosmoMídias. For current licensing terms and details on either version, the developer's page is the best reference to check.
Time Theme Switcher includes safe fallbacks for these cases. If a schedule is invalid or a chosen preset file is missing, the add-on reverts to Blender's stock themes rather than failing. Its background timer also keeps the correct theme active after you reopen Blender and reschedules whenever you adjust the activation times. The permission it requests is limited to reading existing themes from disk, so its file access stays scoped to theme presets.
Also in Workflow for Blender.
by 楊景貴
B3D UI Language Loop is a Blender add-on that cycles through interface languages with a keyboard shortcut. Built for non-English speakers, it lets users switch the UI language quickly while following tutorials in different languages.
by Rikokenz
QuickPath RKNZ is a lightweight motion path visualization addon for Blender that tracks bones and objects in real time. Paths recalculate automatically as you move keyframes, with per-entry customization for color, line width, and dot markers.
by PropGon
PropGon UV Trim is a UV trimsheet toolset for Blender aimed at game and environment artists. It handles trim layout, texel density, atlas presets, ID map baking and a real-time overlay in the UV Editor.
by Digital-Art-Freedom
Spine IO is a Blender add-on that exports armatures, meshes, weights, internal edges, and basic FK animation to Spine 4.3 JSON. It supports OCA/OCO-friendly project structures and procedural blend-modes.
by TinkerBoi
Frame Ranger (Deprecated) is a Blender add-on with tools for working with frame ranges, keyframes, markers, and actions. It has been deprecated and replaced by Action Commander, with source code available free on GitHub.
by Salt Media
BlenderAe2 by Salt Media transfers 3D data and objects between Blender and After Effects in both directions, covering vertices, 3D layer transforms, camera data and layer synchronization.
by MACHIN3
Machin3Tools is a continuously evolving collection of tools and pie menus for Blender, gathered in a single customizable package. It ships in two base variants, Prime and DeusEx, with the DeusEx variant adding more advanced tools.
by MikhailRachinskiy
3D Print Toolbox is a Blender add-on with utilities for 3D printing. It analyzes mesh volume and surface area, checks and fixes geometry, hollows shapes, aligns models to the print bed, and exports to STL, PLY, and OBJ.
by glukoz
UVPackmaster 4 is a UV packing engine for Blender that packs UV maps on the CPU and GPU, using the Cuda and Vulkan APIs, and can run on the CPU and all system GPUs at once.
by MMD
MMD Tools is a Blender add-on for editing MikuMikuDance (MMD) models. It handles importing and exporting model, motion and pose data, along with chopping and joining parts, plus rigid body, material and motion editing.
by HaughtyGrayAlien
SimpleBake brings PBR and traditional texture baking to Blender from a single panel. Select objects, choose maps, and bake — no special node groups or new workflow, working with whatever materials you've already built.
