PitchChanger.io: A Free Online Tool to Change Pitch and Speed in Your Browser
PitchChanger.io is a free browser-based tool that lets you change the pitch and speed of audio without ever uploading your files. Built by musician and founder David Choi, it’s designed for singers, players, teachers, and collaborators who want fast, private control over their tracks.
As musicians, we’ve all had those moments where a song is almost perfect… but the key is just a little too high, or the tempo makes it hard to practice. That’s exactly the problem PitchChanger.io was built to solve.
PitchChanger.io is a free, browser-based audio tool that lets you change the pitch and speed of your audio without ever uploading your files to a server. Everything runs locally in your browser, which means:
- No account needed
- No uploads or downloads
- No waiting for processing
- No privacy concerns about where your audio is going
You drag in a file, adjust the sliders, and hear the results immediately.
Why PitchChanger.io Exists
PitchChanger.io was created by David Choi — singer, songwriter, and founder of CHOISMUSIC.
Like a lot of working musicians, he spent years needing to:
- Transpose songs for different vocal ranges
- Slow down tricky sections to learn parts
- Match keys for live performances or collaborations
Most tools were either clunky, required uploads, or hid important features behind paywalls. So he built something he actually wanted to use himself: simple, fast, and private.
What You Can Do With PitchChanger.io
Here are a few common ways musicians, teachers, and creators can use PitchChanger.io:
Singers
- Lower or raise the key of a backing track to match your vocal range
- Test multiple keys quickly to find the most comfortable one
- Prepare custom practice tracks for rehearsals and shows
Instrumentalists
- Slow down difficult solos without changing the pitch
- Loop and practice specific sections of a song
- Match the key of reference tracks for jam sessions or gigs
Teachers and Coaches
- Create custom practice tracks for students in keys that fit their voices
- Adjust tempo for different skill levels
- Share practice materials quickly without sending large files around
Because everything runs in the browser, it’s easy to pull up during lessons, rehearsals, or writing sessions.
Privacy and Simplicity First
One of the biggest differences between PitchChanger.io and many other tools is how it handles your audio.
With PitchChanger.io:
- Your files never leave your device
- All processing happens in your browser
- There’s no cloud storage, no hidden server, and no data collection on your audio
That means you can confidently use it on unreleased demos, client work, or sensitive projects without worrying about where your files might end up.
You can try it for free at: