Music Speed Changer for Chrome Add to Chrome

Free extension for Google Chrome

Slow down any song right in your browser

Change the tempo and the key of the music and video you play in Chrome, independently, on YouTube, Spotify, Apple Music and more. Loop the tricky part and play along until you’ve got it.

Available in the Chrome Web Store

Free
No account needed

  • 25–250%Tempo, same pitch
  • ±12Semitones, plus cents
  • A–BSeamless loop

Features

Practice with the music you already stream

Music Speed Changer changes the sound of the tab you’re on, so you keep using the sites and playlists you know.

Change the tempo, keep the key

Slow a solo down to 25% to hear every note, or speed a lesson up to 250%. The pitch stays exactly where it was.

Change the key, keep the tempo

Move a song up or down by up to 12 semitones to suit your voice, your tuning or a capo.

Fine-tune in cents

Nudge the pitch in hundredths of a semitone to match a recording that isn’t quite in tune with your instrument.

Seamless A–B loop

Press A where the passage starts and B where it ends. It repeats with no gap, from half a second up to a minute.

Works without a player, too

On pages that play sound without an audio or video player, you can still slow down to 25% and change the key. Sync catches up with the page.

Private, and free

Everything happens on your computer, only on the tab where you click its icon. Nothing is recorded or sent anywhere, and there’s no account to create.

How it works

Open it on any page that plays sound

  1. Add it to Chrome

    Install it free from the Chrome Web Store, then pin it to the toolbar so it’s always one click away.

  2. Play something

    Open a video or a song on YouTube, Spotify, Apple Music or any other page that plays sound.

  3. Click the icon

    Move a slider and you hear the change right away. The round button beside each one puts it back.

On a page with a video or audio player

Most video sites and many music sites. Slow down to 25% or speed up to 250%, play or pause, and skip back or forward 5 seconds from the popup.

A browser showing a page with a video player, with the Music Speed Changer popup open under its toolbar icon. Labels: go to a page that plays music or video; click the icon to open the extension; the menu: disconnect, play local files, help; change the speed, the pitch stays the same; change the pitch in semitones; fine-tune the pitch in cents; reset; set loop points A and B; clear the loop; back 5 seconds, play or pause; forward 5 seconds; processing status; help.
The Music Speed Changer popup: Tempo 85%, Pitch −2, Tune +0.15, a loop from A to B, and the back 5 seconds, pause and forward 5 seconds buttons.
  1. Menu (⋮): disconnect, play local files, help
  2. Tempo: change the speed, the pitch stays the same
  3. Pitch: change the pitch in semitones
  4. Tune: fine-tune the pitch in cents
  5. Loop: set loop points A and B; × clears the loop
  6. Play or pause: with back and forward 5 seconds either side
  7. Status: what the extension is doing, and Help

The round button beside Tempo, Pitch and Tune resets it.

On a page without one

Some sites play sound without a standard player. There the tempo goes from 25% to 100%: slowed-down sound falls behind the page, and Sync catches up.

A browser showing a music page without an audio or video player, with the Music Speed Changer popup open. Labels: go to a page that plays music or video; click the icon to open the extension; the menu: disconnect, play local files, help; slow down to as little as 25%, the pitch stays the same; change the pitch in semitones; fine-tune the pitch in cents; reset; loop a section of the sound; clear the loop; back and forward need a player; Sync: catch up with the page; behind the page after slowing down; help. Pages without an audio or video player keep playing at full speed, so slowed-down sound falls behind. Sync catches up.
The Music Speed Changer popup on a page without a player: Tempo 80%, Pitch −3, Tune +0.11, the Sync button between greyed-out back and forward buttons, and “Out of sync. Press sync to catch up.”
  1. Menu (⋮): disconnect, play local files, help
  2. Tempo: slow down to as little as 25%, the pitch stays the same
  3. Pitch: change the pitch in semitones
  4. Tune: fine-tune the pitch in cents
  5. Loop: loop a section of the sound; × clears the loop
  6. Sync: catch up with the page (back and forward need a player)
  7. Status: “Out of sync” when the sound is behind the page, and Help

The round button beside Tempo, Pitch and Tune resets it.

Tested on

Works where you listen

Tested on these sites, and it works on most other pages that play sound.

Slow down and speed up

25% to 250%, with play, pause and 5-second skips in the popup.

  • YouTube
  • YouTube Music
  • Spotify
  • Apple Music
  • Vimeo
  • Pandora

Slow down, with Sync

25% to 100%, on pages that play sound without a standard audio or video player. Slowed-down sound falls behind the page, and Sync catches up.

You’re on one of these when the round button in the popup shows Sync instead of play/pause.

FAQ

Questions, answered

Is it free?

Yes. Music Speed Changer for Chrome is free, and you don’t need an account.

Can I set the tempo before the music starts?

Yes. Set it in the popup, then press play on the page. The tempo carries over when the site’s player starts, as on Spotify, even though clicking the page closes the popup.

Why can’t I speed up some sites?

Some sites play their music without a standard audio or video player, so Music Speed Changer changes the sound as the tab plays it. It can slow that sound down, but it can’t play it faster than the page does, so on those sites the tempo goes from 25% to 100%.

When you slow down, the sound you haven’t heard yet waits in a buffer and the popup shows Out of sync. The page’s own controls then seem slow to respond, because you’re still hearing sound from earlier. Press Sync, the round button where play/pause usually is, to jump to what the page is playing now. It also syncs by itself once about three minutes of sound has built up.

Why is Back or Forward greyed out?

They move up to 5 seconds, but only within the part of the song the site has already loaded, so they can’t break its player. When there’s less than half a second to move, the button greys out. On Apple Music, Back is often grey, because it keeps only about a second behind.

On pages without a standard audio or video player, both are greyed out, and the round button between them is Sync.

What’s the difference between Pitch and Tune?

Pitch moves the music up or down in semitones, up to 12 (an octave) either way, for example to change the key. Tune makes finer changes, in hundredths of a semitone up to one semitone either way, to match a recording that isn’t quite in tune with your instrument. Neither one changes the tempo.

How do I loop part of a song?

Press A where the loop should start and B where it should end. Music Speed Changer keeps that part and plays it over and over, the end running straight into the start with no gap. A loop can be from half a second to a minute long. Press × to clear it. It also ends when you seek on the page, play another song, or press Back or Forward.

Does it record or send my audio?

No. Everything happens on your computer. It only works on the tab where you click its icon, and only while you’re using it there. When it needs that tab’s sound, to change the pitch or to slow down a page without a player, it processes the sound and plays it back to you. Nothing is saved or sent anywhere. The privacy policy has the details.

Can I use it with music files on my computer?

Yes: open the menu (⋮) in the popup and choose Play local files. That opens Music Speed Changer Web, where you can open songs from your computer and change their speed and pitch.

Which browsers does it work in?

Google Chrome on your computer, version 116 or later.

More answers in the Chrome extension FAQ.

Need a hand?

The Chrome extension FAQ in our help center answers the common questions. You can send us a question, report a problem or suggest a feature from there too.

Read the FAQ

Also from Music Speed Changer

On your phone, tablet and Mac

The apps do all this for the songs on your device, and more: a track splitter that pulls songs apart into vocals, drums, bass and more, key and BPM detection, and a music player.

In any browser

Music Speed Changer Web opens the music files on your computer, right in the browser. Works online and offline.

Open Music Speed Changer Web →

See everything the apps can do at musicspeedchanger.com.

Hear your music your way

Free for Chrome. Works on YouTube, Spotify, Apple Music and more.

Available in the Chrome Web Store