Remove Watermark Without Uploading: How We Built an In-Browser AI Editor
Most online watermark removers ask you to hand over your photo first and ask questions later. We built ClearPix the other way around: the AI models come to your device, your files never leave it, and inference runs entirely in your browser tab. This post is the architecture overview of how that actually works in production — the ONNX Runtime Web + WebGPU inference stack, the model distribution…
ClearPix is an in-browser AI watermark remover that processes images and videos directly in the user's web browser, without uploading any files to a remote server. The service uses ONNX Runtime Web and WebGPU for efficient AI inference, which significantly speeds up the processing time. ClearPix serves the ONNX runtime binaries through jsDelivr and their own R2 CDN, choosing the faster option based on network conditions.
Model files are cached locally in IndexedDB and are verified for integrity using SHA-256 on each request. The service also offers fallback mechanisms for different model formats and delivery networks to ensure a reliable user experience.
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