Frame-accurate
Lines land on the exact frame. Step forward, step back, scrub. The canvas never drifts from the video.
FOR ANIMATORS
Draw on the motion.
FrameSketch is a video annotation tool that lets you sketch right on top of your footage. Step through frames, mark up arcs and poses, and share the file. No uploads. No lag. Just your lines, exactly where you left them.
Free to use. Your footage never leaves your device.
app.framesketch.xyz
SCRUB THE SECTION
FRAME 0000 FRAME 0000
HOW IT WORKS
Three steps.
Then you draw.
01
Drop in a video
Any local file. Nothing leaves your machine.
02
Draw on the frames
Arcs, breakdowns, sticky notes. Each line is fixed the moment you lift the pen.
03
Share the project
One small .fsk file holds every stroke. Email it, open it, keep going.
SEE IT IN ACTION
The studio, screen by screen.
Five screens, one workflow. Flip through the studio below, or open the full-screen tour.
Your video underneath. Your lines on top.
app.framesketch.xyz
app.framesketch.xyz
FEATURES
Built for the way animators actually think.
No animation-suite bloat. Open a file, draw, get back to the shot.
Onion skin
Peek at the frames before and after. Tune the ghosting until it feels right.
Strokes stay put
Lines are fixed the moment you lift the pen. Your marks stay exactly as drawn, frame after frame.
Tiny project files
A whole project is a few hundred kilobytes. Email it, stash it, version it.
Local-first
Your footage stays on your machine. So does your work.
Sync when you want
Annotations follow you across devices. Prefer no cloud? Turn it off. Everything stays local.
THE STUDIO
Everything a shot review needs.
The tools you reach for mid-review, built in. No plugins, no export roulette, no timeline lag.
Frame-by-frame timeline
Walk the footage frame by frame, mark a stretch, and play just that range on a loop.
Layers
Stack strokes, shapes, and notes on real layers. Reorder them, hide them, and dial in each layer opacity.
Notes and comments
Sticky notes and comment markers pinned right on the frame. Move, resize, recolor, and edit them anytime.
Grid, rulers, and guides
Rectangular or isometric grids, drawn as dots or lines. Drag guides out of the rulers to line your marks up where you need them.
Pan and zoom
Zoom into the detail, pan around the shot. Your marks stay exactly where you left them.
Scenes and backgrounds
One project, many scenes. Every scene sits on a solid background layer, so you can hide or dim the video anytime.
WHY ANIMATORS STAY
Private by default.
Ready when you are.
FrameSketch runs entirely on your machine. Cloud sync is optional, and it only carries annotations. Your footage never moves.
100 %
local. Your footage never uploads
1 file
carries a whole project (.fsk)
0 lag
frame-accurate canvas sync
VIDEO FORMATS
Drop in the formats you actually use.
The file picker lists what your platform can really play. Nothing is re-encoded or uploaded: FrameSketch reads the file straight from your machine.
MP4
RecommendedH.264 in an MP4 container. Plays on every platform, browser and desktop.
MOV
QuickTime container. H.264 content plays everywhere.
M4V
The same H.264 core as MP4. Plays where MP4 plays.
WebM
Open VP8/VP9 codec. Plays on Windows, Linux, and Chromium. On macOS, use MP4 or MOV.
Anything else? Convert it once to H.264 MP4 and it will play anywhere.
START SKETCHING
The motion is right there.
Draw on it.
Free to use. Your first arc takes about ten seconds.
Works in the browser. Desktop apps for Windows and Linux are coming soon.
