FaceBlur is a browser based tool for blurring faces in videos. It detects and tracks faces as they move through a clip, allowing users to choose which people should remain visible and apply an effect to everyone else. Available effects include blur, pixelation, and a black box. To use FaceBlur, upload an MP4, MOV, or WebM video, review the detected faces, select the people to keep clear, and preview the result before downloading it as an MP4. The exported video retains its original sound, resolution, and frame rate, and has no watermark. FaceBlur is intended for footage such as interviews, vlogs, documentaries, and dashcam or street recordings. The site notes that faces turned sideways can be harder to process and recommends checking the result before sharing. Photos and videos processed in Private mode stay in the browser and do not leave the user’s device. The service says it detects face locations rather than identities and does not retain face data. Cloud processing for faces and license plates is described as a planned feature, with uploaded videos in that mode to be deleted within 24 hours.