A report on WebAssembly suggests the technology is more popular than many realize, because much of its use is “behind the scenes helping with portability, performance and security.”
Uno Platform has published its fourth annual “State of WebAssembly” summary, written by Gerard Gallant, CIO at Dovico Software and author of WebAssembly in Actio. Uno uses WebAssembly (Wasm) as part of its cross-platform .NET solution.
Data from Google’s Chrome Platform Status shows a steady increase in the number of sites using Wasm, with a year-on-year rise in 2025 from around 4.5 percent to around 5.5 percent.
One of the issues with Wasm on the web is cross-browser support, with Apple’s Safari tending to lag behind, Google Chrome offering the best support, and Mozilla Firefox in between. A table of supported features shows the state of play. In 2025 Safari gained improved exception handling, JavaScript String builtins (improving performance by reducing the need for JavaScript glue code), support for Wasm modules even when just-in-time compilation is disabled, and a new in-place interpreter.
Data from Google’s Chrome Platform Status shows steadily increasing use of Wasm on the web
