Free golf swing analysis in your browser. No signup. Videos never leave your device.
Yes, completely. No signup, no account, no paywall — every feature is free to use, and the plan is to keep it that way. Running the site does cost a little, so one day there may be some small, unobtrusive ads to cover it. Either way your videos stay private on your device. If you find it useful, there's an optional tip button up top — entirely voluntary and never required.
No. Your video never leaves your device. There is no server that receives it. Everything, including your drawings and saved swings, stays in your own browser.
Phones and computers both work. Use a modern browser such as Chrome, Safari, Edge, or Firefox. Drawing, scrubbing, and saving work everywhere. Exporting a video works best in Chrome on a computer.
Load a video, then step through it frame by frame with the arrow buttons or arrow keys. Slow the playback to 0.5x if you want. Use the tools on the left to draw straight lines, boxes, circles, or freehand marks over the swing.
Early extension is when a golfer's hips push toward the ball during the downswing and they lose their posture. The guide drops a dotted line you place at the seat while the golfer is at address. As the swing goes on, watch whether the hips move toward that line. Find it under the Guides button.
Your current work saves automatically to an AutoSave slot as you go, so closing the tab will not lose it. To keep a swing for later, tap Save, give it a name, and choose whether to store just the drawings or the video too. Saved swings appear under My swings on the home screen.
Videos are large, so keeping them on your device is your choice. If you saved drawings only, reopening asks you to pick the original video file so the drawings can be laid back over it. If you saved the video too, it reopens instantly.
Tap the download button to export the clip with your drawings baked in. The clip plays through once while it records, then downloads as a video file you can share.
Browsers can only record video in the WebM format. Most apps and computers play WebM fine. If you need an MP4, a free online or desktop converter can change it.
No. Saved swings live in the browser on the device you saved them on. They are not sent anywhere, so they do not appear on your other devices.
Delete individual swings from the My swings list with the trash button. To remove everything, clear this site's data in your browser settings.