Playing Speed Adjuster

Speed up the audio and video on any web page. A bookmarklet for any browser, or an extension for Firefox.

Add to Firefox Runs on its own, updates itself,
and reaches embedded players.
PSA Drag it to your bookmarks bar.
Click it to try it on this page.
Tap it to try it on this page.
Copy it to add it to your bookmarks.

Version 1.9.2

Try it

Play a track, then click PSA. At 2× you hear two beeps a second.

Demo track 1: high beep
Demo track 2: low beep

Install

  1. Show your bookmarks bar: ⌘ Shift B on a Mac, Ctrl Shift B on Windows and Linux.
  2. Drag the PSA button above onto the bar.
  3. On any page with audio or video, click PSA. Click it again, or ×, to close the panel.

In Firefox you can add PSA from Firefox Add-ons instead. See how the two compare.

Can't drag it?

Create a bookmark named PSA and paste the code as its address:

  • Chrome, Edge: right-click the bookmarks bar, choose Add page…
  • Firefox: right-click the bookmarks toolbar, choose Add Bookmark…
  • Safari: bookmark any page with ⌘ D, then right-click the bookmark and choose Edit Address…
  • Phones and tablets: bookmark this page, then edit the bookmark and replace its address. On Android Chrome, run it by typing “PSA” in the address bar and tapping the bookmark.
Show the code

Bookmarklet or extension?

BookmarkletFirefox extension
BrowsersChrome, Edge, Firefox, Safari, on computers and phonesFirefox 140+ on computers, 142+ on Android
StartsWhen you click itOn its own, on every page
PillWhen you shrink the panelAlso appears by itself when something plays with sound
Full panelClick the bookmarkToolbar button or Alt+Shift+P
Keys [ ] \While the panel is openOn any page with a player (can be turned off)
Players embedded from other sitesCan't reach themFollow your speed
Place in long recordingsSaved while the panel is openSaved on every page
Saved inThe site's own storage, so clearing site data resets itThe extension's own storage
Private windowsStarts fresh, forgotten afterwardsUses your saved speeds, saves nothing
SettingsNoneDefault speed, pill and shortcut switches, sites to skip, saved sites and channels
UpdatesDrag the button againAutomatic

Add PSA from Firefox Add-ons

What it does

Any speed

0.25× to 4×: presets, ± steps, or [ ] \ on the keyboard.

Stays put

Keeps your speed on each site or YouTube channel, and your place in long recordings.

Every player

Handles several players on a page, even ones added later.

Knows what's playing

Title, play and pause, skips, and the time left at your speed.

Out of the way

Drag it anywhere or shrink it to a pill that grows when you point at it. In fullscreen it fades until you move the mouse.

Private

No network requests. Everything stays in your browser.

Good to know

  • The bookmarklet can't reach players embedded from other sites, such as a YouTube video in a blog. Open the video's own page, or use the Firefox extension.
  • Live streams stay at normal speed: they can't run ahead of the broadcast.
  • Found a problem? Report it on GitHub.