Turn a numbered image sequence (PNG/JPEG frames) into a single video that plays your frames in order — entirely in your browser. Whether you exported frames one-by-one from ComfyUI, AnimateDiff or Stable Diffusion, rendered an image sequence from Blender or After Effects, or have a flip-book of stills, you can make a video without installing ffmpeg, typing commands, or uploading anything. It is simple: drop (or choose, or paste) your numbered frames and they are sorted by filename automatically. Reorder with the up/down buttons if needed, then pick the fps (frames per second), maximum width, fit (contain or cover), background, and quality, and click 'Generate video'. The result plays right away in a preview, and you can save it with 'Download WebM'. Encoding uses the browser's WebCodecs API (VP9, falling back to VP8), so it is fast, and the output is a lightweight, widely-playable WebM file. Large frames can be scaled down with the 'max width' control while keeping the aspect ratio, and the quality slider balances file size against quality. Because video is opaque, transparent areas and padding are filled with a black or white background. All processing happens inside your browser — the images and the resulting video are never sent to any server or API, so it's safe to use even where uploading files is not allowed.