The software development landscape is constantly evolving, and Microsoft’s Blazor.NET is among the most talked-about technologies in recent years. It allows developers to build interactive web UIs using C# instead of JavaScript, which seems like a dream come true for many .NET developers. However, Blazor.NET is not a one-size-fits-all solution, and there are reasons to be cautious before fully committing to this technology. Here’s why.

Still Maturing

Although promising, Blazor.NET is relatively new and is still undergoing significant changes. This evolving nature may introduce breaking changes and inconsistencies, making it a risky choice for large-scale, mission-critical applications.

Lack of Third-party Libraries

Blazor.NET doesn’t yet have the same level of third-party library support that technologies like Angular, React, or Vue enjoy. This could mean limited functionality and the necessity to build more features from scratch, increasing development time and cost.

Performance Concerns

While WebAssembly enables near-native performance, it’s worth noting that the initial download size can be large, impacting the application’s load time. Moreover, WebAssembly currently lacks some of the optimizations that make JavaScript fast, leading to potential performance issues.

Browser Compatibility

Blazor WebAssembly has limited support for older browsers. If your target audience uses older versions of browsers, you may face compatibility issues, forcing you to resort to fallback technologies and leading to increased development complexity.

Skillset Mismatch

Blazor allows you to write client-side logic in C#, but you might still need JavaScript for certain functionalities. If your team lacks strong JavaScript skills, you may end up with a tech stack that’s challenging to manage efficiently.

Lack of Community Support

While the community around Blazor is growing, it’s not as large or as active as communities around JavaScript frameworks like React or Angular. This means fewer tutorials, fewer open-source projects to draw upon, and potentially slower solutions to problems you may encounter.

Not Always the Right Tool

Blazor excels in specific use-cases, but it may not be the best choice for all types of applications. For example, if you are building a small, simple web application, the complexities of setting up a Blazor project might outweigh its benefits.


Blazor.NET undoubtedly has a lot to offer, particularly for those deeply entrenched in the Microsoft ecosystem. However, it’s essential to approach it with a clear understanding of both its advantages and limitations. While Blazor may not be the best fit for every project, carefully considering its drawbacks will help you make an informed decision tailored to your specific needs.


No, Blazor.NET is not inherently flawed. It's a promising technology for building web applications using C#. The article aims to highlight some challenges and considerations for organizations thinking about investing in it.
Common alternatives include JavaScript frameworks like Angular, React, and Vue.js, which have robust ecosystems and wide community support.
Blazor.NET can be ideal for projects where you want to leverage existing .NET skills and libraries. However, for broader web development needs, it might not be the best choice at the moment.
Given that Blazor.NET is relatively new, the talent pool is smaller compared to more established technologies like React or Angular.
There are companies that have successfully implemented Blazor.NET in their projects. However, it's essential to note that these are often smaller, more controlled environments and not large-scale applications.
Blazor WebAssembly apps can have larger download sizes, which might lead to slower load times. Blazor Server apps, while smaller, face latency issues because of the constant communication with the server.
As of now, Microsoft is actively developing and supporting Blazor.NET. However, it's crucial to keep an eye on how the technology evolves and whether it gains broader community support.
Blazor Server apps maintain a constant connection to the server, which can open avenues for potential security risks if not adequately managed.

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