Keystone
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Compatibility After Effects Please check exact version compatibility under the "COMPATIBILITY" tab below
for After Effects
Keystone comes to the rescue with all the essential options grouped in a single extension.

Duplicate & flip
Flip
Ascending stagger
Random stagger
Distribute
Absolute paste
Relative paste
Shift (-1 frame)
Shift (+1 frame)
Shift (+10 frames)

Align last key on the CTI
Align on layer in point
Align on layer out point
Stretch from the last key
Stretch from the CTI
Constant speed
Interval cleaning
With Keystone's icon-based interface, essential tasks are now just a click away.

Create smooth curves in a single click with the Constant Speed function.


Keystone is the only tool that performs additional calculations to preserve your
carefully crafted motion curves.

Keystone offers new useful options to deal with the most common situations.

Roll over the images below for a demo of these modes with the "Flip" function:
All Keystone functions are compatible with KBar and it comes with 2 sets of icons.

the way they work with keyframes.
Next to FLOW and EASE COPY, my absolute must have curve editor/keyframing tool for After Effects is KEYSTONE by @RomainCousin.
— Ryan Summers (@Oddernod) June 13, 2022
Besides much needed duplicating, staggering, and stretching keyframing tools, KEYSTONE does 2 things I constantly reach for. https://t.co/vkPCKBuLv4
KEYSTONE maintains your spacing: those carefully constructed easing curve handles that After Effects WRECKS when you move them around in the timeline?
— Ryan Summers (@Oddernod) June 13, 2022
Use KEYSTONE’s tools and they stay locked into the shape you made them. pic.twitter.com/D7GFP3YNW1
Another awesome feature of the hidden animating gem KEYSTONE?
— Ryan Summers (@Oddernod) June 13, 2022
A one button solution to crating a constant speed between keys. No more fiddling with tangent handles for smooth transitions! pic.twitter.com/wna4aDlY1h
Update: I bought Keystone by @RomainCousin and it's amazing. Automates several actions I do on a daily basis. Highly recommend.https://t.co/DEWkg7oeva https://t.co/MUph4stcT4
— AE Screens (@ae_screens) June 15, 2022
I picked this up today, after testing it on a keyframe-heavy client project this week and seeing how much time and effort it could save. Love that constant speed feature!
— Rob Barrett (@robbarrett) September 17, 2021
I just bought it now and I can say a GAME CHANGER in terms of speed and workflow. Thank you @RomainCousin
— Anima Designs Ltd (@AnimaDesignsLtd) September 14, 2021
I've been testing it just a bit too and I totally agree with that... It's a true game changer eachever time you need to move/copy/paste/invert keyframes !
— fremox (@fremox59) September 7, 2021
Picked it up last week. It’s been a big help already. Made the cut to be permanently docked.
— Kevin Snyder (@freshmograph) September 17, 2021
one of the leaders in the motion design community!
After Effects | 2024, 2023, 2022, 2021, 2020, CC 2019 |
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1.1.6 (Current version) - Jul 27, 2023
1.1.5 - Jul 26, 2023
- "Property mode" is now automatically used with the "stagger" functions when all selected keyframes are on the same layer.
1.1.4 - Jun 27, 2023
- New message appearing when the user tries to stagger keyframes on a single layer without using the "property" mode.
- Renamed "interval" function to "distribute".
1.1.3 - Jan 26, 2023
- Fixed a bug that prevented to save the visibility of the "labels" section in the preferences.
- Fixed a bug that prevented some users from closing and saving the "preferences" menu.
- Code optimization.
1.1.2 - Sep 2, 2022
1.1.1 - Aug 29, 2022
- Fixed a bug that prevented labels from loading correctly with non-English versions of AE.
- Fixed label decoding that sometimes displayed wrong colors.
- The "Labels" section is now automatically hidden in versions of AE that do not support this feature (versions prior to 22.6).
1.1.0 - Aug 25, 2022
- Change keyframe colors in one click.
- Select keyframes by color (CTRL/CMD + click).
- Add to selection (SHIFT + click).
- Remove from selection (ALT + click).
- New options in the "preferences" menu:
- Ability to display or hide the colors in the "Labels" section.
- Ability to change the size of the labels in the UI with the "Labels per row" option.
- Licensing framework update:
- Improved support and better error messaging for online activation.
- Fixed error in alert to open After Effects preferences to allow scripts to access network.
1.0.8 - May 4, 2022
- New settings for displaying or hiding Keystone sections.
- New settings allowing to choose the default mode for each function. (default, property mode, layer mode or global mode)
- New informations are displayed in the "Info" panel after using specific Keystone functions.
1.0.7 - Mar 29, 2022
1.0.6 - Mar 7, 2022
- Fixed "ExtComms" error handling.
- Fixed "Stretch from first key" function for KBar that could not use suffixes.
1.0.5 - Jan 28, 2022
- Fixed easing preservation with the "Interval" function.
1.0.4 - Jan 27, 2022
- New "selection" option for the "Copy/Paste" functions.
- Replacement of the "Same time" option by "CTI".
- New icons for the "Copy/Paste" functions.
- "Copy/Paste" functions automatically separate dimensions from position properties if necessary.
- Automatic creation of missing effects with "Copy/paste" functions.
- Added an error message when trying to copy keyframes from a custom property.
- Fixed the detection of "Constant Speed" on existing multidimensional keyframes.
- Removed an error message that prevented the use of the "Stretch" functions when a single keyframe by property was selected.
- Fixed a bug that prevented spatial properties from being correctly flipped under specific conditions.
- Licensing framework update.
1.0.3 - Nov 4, 2021
- Fixed the undo of the "Constant speed" function that was not working properly in rare occasions.
1.0.2 - Oct 19, 2021
- Creation of a detailed documentation ( https://romaincousin.gitbook.io/keystone/ )
- Fixed a bug with "Copy / Paste" functions that appeared when pasting keyframes belonging to properties that did not exist on the destination layers.
- Fixed a bug that prevented Keystone from working when the timeline panel was maximized.
1.0.1 - Sep 10, 2021
- Fixed hotkey on Mac to auto-update existing keyframes with the "Paste" function. (CMD + click)
- Bug fix with "Stagger" functions that triggered an error when only one keyframe per property was selected.