What keyframes do and how to add them
A keyframe in Roblox Animator is a snapshot of your character's pose at a specific moment in time. When you add multiple keyframes, the animator automatically fills in the movement between them — so you set the starting position, the ending position, and the software creates the motion in between. This is how you build animations instead of drawing every single frame by hand.
To add a keyframe in Roblox Animator, you move your character's joints to the pose you want, then click the Add Keyframe button (or press the spacebar). The animator records that exact position at that exact time on the timeline. Each keyframe you add becomes a point the animation will pass through.
The most common mistake is adding keyframes at the wrong time — either too many (which makes animation stiff) or too few (which makes it look incomplete). You'll get better at spacing them as you build more animations, but the basic rule is: add a keyframe whenever your character's pose changes meaningfully.
Key Takeaways
- Keyframes record your character's joint positions at specific times on the timeline, and the animator creates smooth motion between them.
- You add a keyframe by posing your character, then clicking Add Keyframe or pressing the spacebar while the timeline is focused.
- The first keyframe should always be at time 0, showing your character's starting pose before any movement begins.
- Spacing keyframes too close together makes animation look stiff; spacing them too far apart leaves gaps the animator has to fill with unnatural motion.
Setting up your first keyframe at time zero
Before you add any other keyframes, you need a starting pose. Move your timeline slider all the way to the left so you're at time 0.0 (the very beginning of your animation). Then pose your character in whatever position makes sense for the start — standing still, mid-stride, mid-jump, whatever your animation needs.
Once your character is in that starting pose, add a keyframe. This locks in the pose at the beginning of your timeline. If you skip this step and start adding keyframes in the middle, your character will snap from a default pose to your first keyframe, which looks broken.
You can always adjust this starting keyframe later by moving the timeline back to 0, changing the pose, and the keyframe updates automatically. The animator doesn't lock anything in place — you're always free to move back and change what you recorded.
Moving the timeline and adding keyframes at different times
The timeline at the bottom of Roblox Animator shows time in seconds. You can click anywhere on the timeline to jump to that moment, or drag the slider left and right to scrub through your animation frame by frame. The current time always shows in a small box — usually in the top left or bottom of the animator window.
To add a keyframe at a different point in time, move your timeline slider to where you want the next pose to happen. If your animation is 2 seconds long and you want a pose change at the 1-second mark, click or drag the slider to 1.0. Then pose your character and add a keyframe. That pose is now locked at the 1-second mark.
Most animations use keyframes spaced 0.1 to 0.3 seconds apart for smooth, natural motion. A walk cycle might have keyframes at 0, 0.3, 0.6, and 0.9 seconds. A punch might have keyframes at 0, 0.15, and 0.3 seconds. The faster the movement, the closer together your keyframes usually need to be.
Adjusting poses after you've added a keyframe
If you add a keyframe and then realize the pose isn't quite right, you don't have to delete it and start over. Move your timeline back to that keyframe's time, adjust the character's joints to the pose you actually want, and the keyframe updates. The animator is watching — any change you make at a keyframe's time automatically saves to that keyframe.
This is why it's important to always check which time you're at before you start posing. If you're at time 0.5 and you move your character's arm, you're changing the keyframe at 0.5, not creating a new one. If you want a new keyframe, you have to move to a different time first.
You can also select a keyframe directly on the timeline (it usually shows as a small diamond or dot) and drag it left or right to move it to a different time. This is useful if you add a keyframe at 0.3 seconds but realize it should be at 0.4 seconds — just drag it instead of deleting and re-adding.
Deleting keyframes you don't need
If you add a keyframe by accident or decide a pose doesn't work, you can remove it. Move your timeline to that keyframe's time, then look for a delete button (usually labeled "Delete Keyframe" or shown as a trash icon). Some versions of Roblox Animator let you right-click the keyframe on the timeline and select delete from a menu.
Deleting a keyframe doesn't affect the keyframes before or after it — the animator will just create motion directly from the previous keyframe to the next one. This is useful if you realize you added too many keyframes and the animation looks stiff. Removing every other keyframe often smooths things out.
Common problems when adding keyframes
The most common issue is adding a keyframe without realizing you're not at the time you think you are. Always check the timeline display before you pose your character. If you add a keyframe at 0.2 seconds when you meant to add one at 0.5 seconds, your animation will look wrong and you'll spend time trying to figure out why.
Another frequent problem is adding keyframes too close together. If every joint change gets its own keyframe, the animation looks robotic and stiff because there's no smooth transition between poses. Try spacing keyframes at least 0.1 seconds apart, and for slower movements, 0.2 to 0.3 seconds. You can always add more keyframes later if the motion looks too fast.
Finally, forgetting to add a keyframe at time 0 causes your character to jump into position when the animation starts playing. Always start with a keyframe at 0.0 showing your character's resting pose, even if nothing is moving yet. This gives the animation a proper beginning.
Frequently Asked Questions
What's the difference between adding a keyframe and just moving my character?
Moving your character without adding a keyframe doesn't save anything — the animator forgets the pose as soon as you move to a different time. Adding a keyframe locks that pose at that specific time so the animator remembers it and uses it to create motion between keyframes.
Can I copy a keyframe from one time to another?
Most versions of Roblox Animator don't have a built-in copy function, but you can recreate a pose by moving to the original keyframe, noting the joint angles, moving to the new time, and posing your character the same way. Some third-party animation tools have copy features, but the official animator requires manual recreation.
How do I know if I'm adding keyframes at the right speed?
Play your animation back and watch how it moves. If it looks jerky or stiff, your keyframes are too far apart or you need more of them. If it looks smooth but slow, your keyframes might be too close together. Adjust spacing and add or remove keyframes until the motion feels natural for what you're trying to animate.
What happens if I add a keyframe at the same time as another keyframe?
Most animators won't let you add a second keyframe at the exact same time — it will just update the existing one. If you want two different poses at the same moment, you need to space them slightly apart, like 0.01 seconds, so the animator can distinguish them.