Video Frame Extractor (web-toolbox.dev)
Free tool for extracting specific frames from a video file as images. All processing is done in the browser, so video data is never sent to external servers.
Image Mosaic / Blur (www.oh-benri-tools.com)
An online tool for applying mosaic or blur effects to any area of an image by dragging. Customize the mosaic coarseness and fill color, with all processing done in the browser.
