VideoUpscaler.dev is a free, privacy-first browser video upscaler for short MP4/H.264 clips. It uses WebGPU, WebCodecs, and an Anime4K CNN model to process footage directly on the user's device instead of uploading it to a cloud service.
Users can preview and compare the original and enhanced result, select a content preset, pause or resume processing, and export a 2× upscaled MP4 without creating an account. It works best in compatible desktop Chromium browsers; processing speed depends on local hardware, resolution, and clip length.
