Editor’s note: This article was updated in May 2026 to reflect the latest developments in blogging and digital publishing.
When WooThemes announced it was moving to full GPL compliance years ago, it was met with curiosity by some and surrender by others.
In retrospect, it seems more like an inevitability. The WordPress ecosystem rests on a licensing foundation that sooner or later forces every commercial theme and plugin vendor to face the same question: can a business model built on redistribution restrictions survive within a platform whose license expressly prohibits this restriction?
For a growing number of theme shops and plugin developers, the answer was no. The WooThemes decision was not an isolated incident, but a signal flame that illuminated the structural tension between the GPL and proprietary instincts in the WordPress economy.
Understanding why this tension exists and how to resolve it is essential for anyone building a WordPress publishing business today.
How the GPL shapes everything built into WordPress
WordPress is licensed under the GNU General Public License version 2. The GPL is not just a proposal or a set of community norms. It is a legal instrument that governs how software is used, modified and distributed. Sometimes described as “copyleft” or even “viral,” its central feature is the requirement that derivative works have the same license. Any code that extends or builds upon GPL-licensed software inherits the obligation to remain open and redistributable.
Co-founder of WordPress Matt Mullenweg made his position clear: “Themes are also GPL.” The argument, supported by an opinion from the Software Freedom Law Center, claims that WordPress themes and plugins are not independent programs that run on top of a neutral platform. They call WordPress functions, connect to its core, and execute in the runtime environment. This interdependence, from a legal point of view, makes them derivatives.
The practical result is significant. If the theme PHP code is a derivative work of WordPress, then it must be licensed under the GPL. And if it must be licensed under the GPL, then anyone who receives a copy has the right to redistribute it, modify it, and even sell it to others. The theme vendor may charge for the initial download, but a court will likely find the WordPress GPL license controlling, meaning any contractual clause prohibiting redistribution is unenforceable.
There is a narrow exception. Static assets such as CSS, JavaScript, and images do not run in the WordPress PHP runtime. They are served by a web server or interpreted by a browser, meaning they can theoretically be licensed separately. But in practice, combining these assets with GPL-licensed PHP code without careful separation risks “infecting” them with the GPL as well. Few theme vendors bother with this kind of granular packaging.
Why WooThemes’ change was a strategic recalibration, not a capitulation
WooThemes under the leadership of the CEO Hi PienaarFully embraced the GPL and joined ThemeForest as one of the first 100% GPL partners. Pienaar sees this move as an opportunity: “We are very excited to work with ThemeForest to become one of the first 100% GPL partners and also to reach a whole new audience for our themes.”
This frame is intentional. Rather than viewing GPL compliance as a concession, WooThemes positioned it as a distribution strategy. By dropping the pretense of restricting redistribution, the company can focus on the things that really make money in the GPL world: support, updates, documentation, and the credibility of being a canonical source. The brand was the product, not the lock in the zip file.
This change also removed legal uncertainty. Theme vendors attempting to enforce “no redistribution” clauses have operated in a gray area that has led to controversy without offering valid protection. Developers who have purchased themes can, under the GPL, legally share them on forums, integrate them with client sites, or upload them to free repositories. Implementation was expensive, uncertain, and often counterproductive in terms of community relations.
The example of WooThemes showed that the most sustainable way is to adapt the business model to the license rather than fight it. This lesson has become more relevant as the WordPress ecosystem has matured and marketplace platforms have tightened their GPL requirements.
The Compatibility Problem Is Wider Than WordPress
License compliance is not an issue unique to WordPress themes. A Study of open source license inconsistencies in the PyPI ecosystem found that 7.27% of package releases contained license inconsistencies, and 61.3% were caused by link dependencies. In other words, developers often violate open source licenses not out of willful disobedience, but through the complexity of software dependencies.
WordPress theme development carries a version of the same risk. A theme may include a GPL-licensed PHP library, an MIT-licensed JavaScript component, and custom image assets. Without deliberate attention to how these pieces interact under their respective licenses, a developer may inadvertently create a product with internal legal conflicts. The GPL’s copyleft clause is particularly aggressive in this respect: if any GPL code is linked to a product, the entire combined work must be distributed under the GPL, unless the components are truly separate and independent.
The problem is compounded by the rise of AI-powered code generation. A A framework called DevLicOps IT leaders have been asked to help manage licensing risks in AI-generated code, recognizing that when large language models produce pieces of code, the licensing origins of that code are often opaque. For WordPress theme developers who use AI tools to speed up production, this introduces a new vector of compliance risk that was almost non-existent a few years ago.
These developments indicate that the licensing landscape is becoming more complex, not less. Theme vendors who attempt to circumvent the GPL face not only the original legal exposure, but also the complex risks presented by modern development tools.
Where Theme Vendors Go Wrong In Their Thinking
The most common mistake among commercial WordPress theme developers is treating the GPL as a theoretical concern rather than an operational reality. Many vendors believe that because enforcement actions are rare, the license can be invalidated or revoked with a specific terms of service agreement. This assumption is legally fragile. The GPL is a copyright license and derives its authority from copyright law itself. A downstream terms of service agreement cannot override rights already granted by the GPL.
Another common mistake is to associate “restricting access” with “selling topics”. The GPL does not prohibit the sale of software. It prohibits restrictions on the freedom of recipients to use, modify and redistribute what they receive. The theme developer can completely charge for the download. But the recipient of the code has every legal right to give it away. Vendors who base their entire revenue model on access restriction are building on a foundation that licensing does not support.
A more subtle calculation involves a split-licensing approach, where PHP is released under the GPL, but CSS, JavaScript, and images are kept under a proprietary license. This strategy is technically permissible, but it creates friction with the WordPress community, limits eligibility for listing on WordPress.org, and adds legal complexity to how assets are aggregated. For most small theme shops, the cost of maintaining a true split licensing structure outweighs the marginal revenue protection it provides.
Perhaps the most outdated assumption is that code scarcity drives value. In an ecosystem where GPL themes can be legally redistributed by anyone, the code itself is closer to a commodity. Companies that have thrived in the WordPress theme space over the past decade, including Developer, Developer and the WooCommerce ecosystem emerging from WooThemes, have done so by selling continuous value: automatic updates, priority support, integration guarantees and trust in the ecosystem. The code is the door; service is home.
What the GPL Reality Means for Publishers and Developers
For bloggers and digital publishers who rely on WordPress, the GPL is more than just a legal note. It shapes the economy of the means they use. Understanding this dynamic provides leverage: it means knowing that paid themes can often be obtained legally from secondary sources, that theme lock is weaker than many vendors assume, and that the real differentiator between theme providers is not the exclusivity of their code, but the quality of their ongoing service.
The trajectory of WooThemes for developers and theme vendors remains instructive. Fighting the GPL is a losing strategy because enforcement is quick, but the ecosystem itself rewards adaptation. WordPress.org prefers GPL-compliant themes. Major markets have moved towards full GPL compliance. Community trust, driven by organic distribution and word-of-mouth growth, flows to developers who embrace the license rather than shying away from it.
The structure lesson is simple. The GPL is not a loophole to be patched or a restriction to be maneuvered around. This is the legal architecture of the WordPress platform. Every business built on this platform inherits its own limitations and advantages when approached with clarity. Theme vendors that build service-oriented models around GPL code are sustainable. In contrast, those who build access-constraint models spend their energy on implementation rather than product improvement.
WooThemes didn’t go GPL because it was trendy. The GPL went away because the alternative was a vague legal and strategic conflict. The following years have shown that the same logic applies to every serious WordPress theme business. The license does not bend. Must have a business model.
