create ringtone from music online
A phone ringtone lives under two constraints most other trimming tasks do not have: a short duration and, sometimes, looped repeats inside a ringtone app. Apple caps custom ringtones (.m4r) at 40 seconds, and even without that formal limit on Android, common practice stays between 20 and 30 seconds, enough for the chorus without wearing out someone who hears it several times a day.
MP3 128kbps is the default suggested format for any input that is not WAV, and the small size makes it easy to send the file over a message if the phone is not nearby.
It is not a file defect, it is the same anti-click mechanism that keeps a single-play ringtone perfectly clean.
It is worth redoing the selection with a safety margin, 35 seconds for example, before trying to import it as a ringtone on an iPhone.
The Audio Trimmer accepts MP3, WAV, OGG/Vorbis, FLAC, AAC, M4A, and WebM. The exact support depends on the codec implemented by the browser, but the most common formats work in all modern browsers.
MP3 128kbps is usually enough for a ringtone, since perceived quality on a small phone speaker does not change much above that, and the file is much smaller: 25 seconds land near 391KB at MP3 128kbps versus over 4MB for the same segment in 16-bit WAV. WAV only pays off if you plan to edit the ringtone again later.
Every export gets an 8ms ramp at the start and another 8ms ramp at the end, to prevent cut clicks. On a single-play ringtone that is unnoticeable, but if the app loops the file, the two ramps meet at the seam and form a roughly 16ms level dip, more noticeable the shorter the ringtone is.
The tool itself only enforces a 0.02s minimum, with no duration ceiling. The ceiling comes from the operating system: Apple rejects .m4r files over 40 seconds as a custom ringtone. Android has no such formal limit, but 20 to 30 seconds is the range most popular ringtones land in.
Your file is processed locally in the browser. No data is sent to any server.