VideoUpscaler.dev - Free, privacy-first 2x video upscaling in your browser. Enhance short MP4 clips locally with WebGPU and Anime4K, without uploads or signup.

VideoUpscaler.dev provides a practical, privacy-first way to test whether a short video benefits from model-based 2x upscaling. The current tool runs in a supported desktop Chromium browser, keeping the original footage on the user’s own device instead of sending it to a remote video-processing service.

How it works

Open a short MP4 video encoded with H.264, inspect the local preview, and export the processed 2x result. WebGPU accelerates on-device inference, WebCodecs supports browser-native media processing, and an Anime4K convolutional neural network performs the upscaling. The current workflow does not require a product account, a cloud upload, or desktop software installation.

Who it is for

Independent creators, editors, marketers, and privacy-conscious users can test compatible animation clips, older recordings, product demonstrations, or short social-media videos before publishing or editing. Local processing is useful when source footage is sensitive or when a creator prefers not to hand files to an online conversion service.

Pricing and platform

The currently verified browser-based workflow is free. It is a web application intended for a compatible desktop Chromium browser with working WebGPU and WebCodecs support; it is not represented as a dedicated Windows, macOS, mobile, or browser-extension product.

Important limitations

The current workflow is intended for short MP4/H.264 clips and a fixed 2x output. Processing speed, stability, maximum practical clip length, and export behavior vary with GPU capability, available hardware resources, browser support, source resolution, and the input file. Upscaling cannot recreate details absent from the original footage, and no 4K guarantee, long-video batch processing, commercial SLA, or future pricing guarantee is claimed.