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Blender Foundation Metric

Extension package

Catalog row in Vendor License Metrics · Cited

Unit
Add-on or theme package listed on extensions.blender.org
Definition
Inventory concept used by this wiki. The Extensions Terms of Service apply to uploaded add-ons and "Other extensions (themes)", each subject to the licence and branding requirements of sections 1 and 2.
Counting rules
Each add-on or theme uploaded to the official platform is subject to the terms; licence requirements differ for add-ons (GPL 3 or later), themes (GPL-compatible) and assets (CC0).
Floors / minimums
None.
Applies to products
  • Blender Extensions
Product category

Evidence 6

Bundled wheels must be unmodified evidence
"Wheels must be bundled unmodified from Python’s package index. Wheels must include their dependencies."

Manual, Python Wheels, RequirementsPython Wheels - Blender 5.2 LTS ManualRetrieved 2026-10-08

Extension assets must be CC0 evidence
"Binary files or other types of assets included in the extension (images, SVG files, fonts, etc.) must be licensed as Public Domain (CC0)."

Terms of Service, 1.2Terms of Service — Blender ExtensionsEffective 2026-08-10Retrieved 2026-10-08

Extension licences are declared with SPDX identifiers evidence
"# License conforming to https://spdx.org/licenses/ (use "SPDX: prefix) # https://docs.blender.org/manual/en/latest/advanced/extensions/licenses.html license = [ "SPDX:GPL-3.0-or-later","

Manual, Extensions Getting Started, manifestGetting Started - Blender 5.2 LTS ManualRetrieved 2026-10-08

Extensions platform requires GPL 3 or later for add-ons evidence
"Uploaded add-ons must be wholly compliant with the GNU General Public License, version 3 or later. Other extensions (themes) must be compatible with the GNU General Public License, version 3 or later."

Terms of Service, 1.1Terms of Service — Blender ExtensionsEffective 2026-08-10Retrieved 2026-10-08

Legacy add-ons are deprecated evidence
"With the introduction of Extensions in Blender 4.2, the old way of creating add-ons is considered deprecated."

Manual, Add-ons, Legacy vs Extension Add-onsAdd-ons - Blender 5.2 LTS ManualRetrieved 2026-10-08

Manual requires GPL 3 or later for extension add-ons evidence
"For add-ons, the required license is GNU General Public License v3.0 or later. For themes, the recommended license is GNU General Public License v3.0 or later, but any GPL-compatible license is supported. For assets used in add-ons, the required license is Public Domain (CC0)."

Manual, Extension LicensesExtension Licenses - Blender 5.2 LTS ManualRetrieved 2026-10-08

Source Documents 5

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