Accelerate is a Safari extension with powerful, customizable features for controlling video playback and speed. FEATURES • Control playback speed of HTML5 video in Safari • Personalize keyboard shortcuts for common media controls, e.g., play/pause, skipping, mute, Picture-in-Picture, etc. • Control playback with your keyboard or the extension popup menu in Safari • Supports Picture-in-Picture and AirPlay • Works with YouTube, Netflix, Hulu, Apple TV+, Prime Video, Twitch, and more Privacy Policy: https://ritam.me/projects/accelerate/privacy FAQ: https://ritam.me/projects/accelerate/faq/ GitHub: https://github.com/ritamsarmah/accelerate more
Ratings & Reviews
4.1 out of 5 51 Ratings
Great but have recommendation
05/01/2021
Huntman24
I am really enjoying the functionality of the extension. I use this as a medical student to more quickly navigate through lectures. One additional feature that would make this perfect for me would be menu commands to make universal keyboard shortcuts. An example this could be used is during recorded lectures and taking notes. If i miss a particular portion of the lecture audio and I need to skip backwards to get it, without exiting the note taking application, I would be able to do that. I cant tell you how much I am going in and out of applications when I just want to have a global shortcut for pause/play, skip forward and skip backward. Maybe Accelerate can do this and I just missed it. Great applicaiton none the less!
Great but have recommendation 05/01/2021
Huntman24
I am really enjoying the functionality of the extension. I use this as a medical student to more quickly navigate through lectures. One additional feature that would make this perfect for me would be menu commands to make universal keyboard shortcuts. An example this could be used is during recorded lectures and taking notes. If i miss a particular portion of the lecture audio and I need to skip backwards to get it, without exiting the note taking application, I would be able to do that. I cant tell you how much I am going in and out of applications when I just want to have a global shortcut for pause/play, skip forward and skip backward. Maybe Accelerate can do this and I just missed it. Great applicaiton none the less!
Does what it says
10/14/2024
Tom Dibble
I did have to go into the Safari preferences and set it to show up on specific / all websites (for some reason I wasn't being asked despite that being the default, but this may have been interplay between this and Vinegar). After that, though, this works perfectly, allowing me to quickly speed up / down without having to reach for the mouse. Awesome!The one thing I'd ask is also being able to control subtitles with a keyboard command, since this is the other item that causes me to reach for the mouse (albeit much less often than for the playback speed controls). Not sure it is possible, but I didn't think that the speed controls could be exposed to the keyboard either, so ...
Does what it says 10/14/2024
Tom Dibble
I did have to go into the Safari preferences and set it to show up on specific / all websites (for some reason I wasn't being asked despite that being the default, but this may have been interplay between this and Vinegar). After that, though, this works perfectly, allowing me to quickly speed up / down without having to reach for the mouse. Awesome!The one thing I'd ask is also being able to control subtitles with a keyboard command, since this is the other item that causes me to reach for the mouse (albeit much less often than for the playback speed controls). Not sure it is possible, but I didn't think that the speed controls could be exposed to the keyboard either, so ...
Unable to utilize all features
10/25/2025
Bragdish
Unable to set custom speed up/ speed down in increments other than the default 0.25x. Whenever I try to create a new shortcut with +/- 0.05 or 0.10 or anything other than 0.25, the setting never gets saved even after clicking the save button. Also the default shortcuts given don’t work for speeding up, slowing down or resetting. The overlay is also absent. I am having to manually click the extensions icon on Safari every time I need to change speeds. Kindly look into it. Thanks :)
Unable to utilize all features 10/25/2025
Bragdish
Unable to set custom speed up/ speed down in increments other than the default 0.25x. Whenever I try to create a new shortcut with +/- 0.05 or 0.10 or anything other than 0.25, the setting never gets saved even after clicking the save button. Also the default shortcuts given don’t work for speeding up, slowing down or resetting. The overlay is also absent. I am having to manually click the extensions icon on Safari every time I need to change speeds. Kindly look into it. Thanks :)
MacOS ver.: VGood, iOS ver.: Default Settings only
12/01/2023
boBrebyC
Again, great implementation on MacOS, but since I started using the iDevice variant, a) every input setting on the General app tab refuses to acknowledge changes to the playback speed multipliers or increment; on the Shortcuts app tab b) every created shortcut ignores user input and reverts to DEFAULT settings, and c) every Standard shortcut that is edited either resists editing entirely or replaces the Standard shortcut with the Default values from a newly created shortcut (in order to preserve the Standard shortcuts, the app must be clean re-installed).If the speed notification corner or the Keyboard shorts in the Standard shortcuts were in conflict with our workflow, I'd have to find another solution. Thankfully, the Standard shortcuts and General settings are tolerable. thx
MacOS ver.: VGood, iOS ver.: Default Settings only 12/01/2023
boBrebyC
Again, great implementation on MacOS, but since I started using the iDevice variant, a) every input setting on the General app tab refuses to acknowledge changes to the playback speed multipliers or increment; on the Shortcuts app tab b) every created shortcut ignores user input and reverts to DEFAULT settings, and c) every Standard shortcut that is edited either resists editing entirely or replaces the Standard shortcut with the Default values from a newly created shortcut (in order to preserve the Standard shortcuts, the app must be clean re-installed).If the speed notification corner or the Keyboard shorts in the Standard shortcuts were in conflict with our workflow, I'd have to find another solution. Thankfully, the Standard shortcuts and General settings are tolerable. thx
What’s New
Version History
• Add update app icon
1.1.4
Feb 4
• Various bug fixes and performance improvements
1.1.3
03/10/2025
• Fixes shortcut letters blocking text input on certain website textfields
1.1.2
06/13/2024
Accelerate is now open source! If you're interested in contributing, please check out the GitHub repo: https://github.com/ritamsarmah/accelerate • Fixes playback rate calculation error
1.1.1
03/15/2024
• Add new shortcut action to toggle fullscreen • Bug fixes and improvements Accelerate is now open source! If you're interested in contributing, please check out the GitHub repo: https://github.com/ritamsarmah/accelerate
1.1.0
02/11/2024
• Adds better support for embedded videos using iframes
1.0.1
07/19/2022
1.0.0
05/19/2022
• Add update app icon more
Version 1.1.4
Feb 4
App Privacy
App Privacy
The developer, Ritam Sarmah, indicated that the app’s privacy practices may include handling of data as described below. This information has not been verified by Apple. For more information, see the developer’s privacy policy .
To help you better understand the developer’s responses, see Privacy Definitions and Examples .
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Data Not Collected
The developer does not collect any data from this app.
The developer, Ritam Sarmah, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
