Let’s get your loop moving.
Most problems can be solved without sending anyone your audio.
A file will not open
Try WAV or MP3 first; they have the broadest browser support. M4A, AAC, OGG, and FLAC support varies by browser. Multichannel files should be exported as mono or stereo before opening them in Looper.
Smart Find returns nothing
This is sometimes the correct result. Smart Find stays quiet when it cannot find strong rhythmic evidence. Try a section with a steadier beat, or place the markers manually and use Smart Seam.
Loopmarks disappeared
Private browsing and strict storage settings can prevent permanent browser storage. Looper shows “session only” when it detects this. Use Back up in the Loopmarks toolbar for anything important.
An export was stopped
Looper checks the estimated memory cost before rendering. Shorten the selected loop or use a smaller source file, then export again. The safety check prevents a tab or mobile browser from becoming unresponsive.
Report a problem
Share the browser, device, file format, and what you expected—never attach copyrighted or private audio you cannot share. Open a support report on GitHub.