Uasset Viewer

Uasset Viewer is a browser-based tool designed to enable rapid viewing, auditing, and verification of Unreal Engine .uasset files without installing Unreal Editor. It serves developers, asset artists, and QA engineers who need quick access to asset metadata and a visual preview during the early stages of a pipeline, bug hunting, or cross-team reviews. The tool accepts a local file or a direct URL and exposes essential properties such as class name, engine version, asset size, and export count, along with a lightweight preview of textures or meshes. It emphasizes data privacy by supporting client-side parsing where feasible.
Conceptually, the tool uses a UE asset parser to read the serialization headers, export tables, and type information from a .uasset file. It decodes core fields and computes derived values like size in MB and number of exports. For textures and simple meshes, it generates small previews without executing the engine. The process can run entirely in the browser using WASM modules, or be offloaded to a server for large assets or batch workflows, with results returned as structured metadata and previews.
Beneficiaries include game developers, tooling engineers, and production QA teams who need faster intake of assets. Use cases include quick validation on import, asset auditing across a build, side-by-side comparisons, and lightweight reporting for reviews. Unique value lies in preserving local data when using client-side parsing and providing immediate, machine-readable metadata alongside a safe preview, enabling automation pipelines and integration with asset management workflows.
Core features include URL or file input, essential metadata extraction, thumbnail previews, and export of metadata as JSON or CSV. Optional advanced capabilities cover batch processing, server-side decoding for large assets, and automation hooks for CI/CD pipelines. Use the tool to validate asset readiness, verify engine compatibility, and support rapid triage in collaborative environments.