Review every frame
Step through decoded frame timing, loop any phase, and compare swings.
A closer look. From Greenskeeper.
Your free golf swing analyzer.
Review your golf swing video frame by frame, draw lines and angles, compare two swings, and export your annotations. Free in your browser, with no account needed.
Drop your swing hereMP4 or MOV · up to 60 seconds
Try the demo Your video never leaves your device.
00:03.18
Built for honest improvement
Powerful tools. No guesswork.
Mark what matters
Draw planes, angles, paths, and references that stay aligned with video.
Compare your way
Align two local videos, work side by side or overlaid, and choose whether each mark belongs on A, B, or both.
A better clip starts here
Record once. Learn more.
Face-on or down the line, a few small choices make analysis dramatically clearer.
Open the full recording guide- 1
Set the frame
Keep the golfer, ball, and entire club visible.
- 2
Hold steady
Use a tripod at hand height and avoid ultra-wide lenses.
- 3
Capture detail
60 FPS works well; 120–240 FPS is best around impact.
Your swing is yours.
Videos never leave your browser. Playback, drawings, comparison, browser saves, screenshots, and video exports all run locally.
Before your next practice session
Golf swing analysis, on your terms.
How do I analyze my golf swing video?
Open a video from your device, find a frame you want to review, and draw your own reference lines or angles. Add a second video for side-by-side or overlay comparison. Export a screenshot or annotated video to review with your coach.
Is Swingalysis free to use?
Yes. Manual video review, drawing, comparison, and exports are free. There is no account required. You can try the golf swing demo before opening your own video.
Does this use AI to diagnose my swing?
No. You choose the frames and place the marks. Swingalysis does not score your technique, measure club speed, or infer ball flight. Read about the limits of 2D golf swing analysis before interpreting angles.
How should I record a swing for comparison?
Use a steady camera and consistent framing, with the golfer and entire club visible. Record face-on or down the line and keep the same angle between clips. Our golf swing recording guide walks through camera placement and lighting.
Do I need to upload my golf video?
No. Your video opens locally in your browser. Keep the original clips if you save a project, because project files contain drawings and settings rather than a copy of the video.
For the places the game takes you
Every swing has a setting.
Keep yours.
The first round on a buddies trip. The course you play every Friday. The one you still dream about. Keep your played courses, favorites, and bucket list together in Greenskeeper.
Free on iPhone. Greenskeeper+ optional.
