I built an AI Image Upscaler that runs 100% in the browser (no server uploads)

A developer launched an AI image upscaler that runs entirely in the browser so images never leave the device.

The tool can upscale photos, anime, and digital art to up to 4K resolution without sign-up or watermarks on free outputs.

The frontend uses Astro, TypeScript, and Preact while AI inference runs client-side with TensorFlow.js and ONNX Runtime Web.

The service is available at imgupscaleai.com and offers three free daily uses per user.