Ballpoint · Beat-Synced Drawing

How to use it

Pick a photo (or start with the Mona Lisa sample), then enter your song's BPM and the video length. Don't know the BPM? Play the song and hit “Tap along” a few times. Tap the main subject in the picture (a face, say) and it gets drawn first and in more detail.

Turn on the metronome to check the timing in the preview. The export is a silent MP4 (9:16 portrait, or 3:4 / 1:1). Add the same song on TikTok, Reels or Shorts and the drawing lands on the beat: more strokes on each beat, every stage changes on a bar line, and the last stroke hits a downbeat before the finished drawing holds.

Six styles

Blue ballpoint (cross-hatching), four-color ballpoint (each stroke picks the red, green, blue or black pen based on the photo's color there), black ink pen, stippling, scribble, and a one-line wave: a single unbroken line zigzags down the page, its ripples tightening in the darks. Every style follows the same big-to-small order and syncs to the beat.

How it draws

It isn't a filter, and there's no generative AI. The page reads the light and edges of your photo, produces over 10,000 strokes with hand wobble, pressure and little hooks at the start, then orders them the way a person would: ① block in ② outlines ③ light tones ④ details ⑤ darks ⑥ accents, always subject first, background last.

Everything happens in your browser; the photo is never uploaded. A 20-second video exports in a few seconds on a laptop. The sample is the Louvre's Mona Lisa (public domain).