Calculator
What the CSS Animation Generator does
CSS Animation Generator: generates Live preview, Status and CSS animation from Animation name, Effect and Duration (s). Example: animation name fadeIn, effect Fade in and duration (s) 0.8 gives status Preview ready · fade.
From Animation name, Effect, Duration (s) and Easing, this tool derives Live preview, Status and CSS animation. The result recalculates on every keystroke without a button press or a page reload.
It is mostly used by people inspecting an API response. Most of these tasks are one-liners in a terminal, but not when you are away from one.
The work is done by JavaScript already loaded in your browser, so your input never crosses the network.
The method, a field-by-field reference and a worked example built from the defaults are all on this page.
What do the CSS Animation Generator fields mean?
The CSS Animation Generator uses 5 inputs. The form opens pre-filled, so the fastest way in is usually to overwrite the one field you actually care about.
| Field | What to enter | Default |
|---|---|---|
| Animation name | optional | fadeIn |
| Effect | choose from Fade in, Slide up, Slide from left, Scale in, Bounce in or Pulse | Fade in |
| Duration (s) | accepts 0.1 to 10 | 0.8 |
| Easing | choose from ease, ease-in, ease-out, ease-in-out, linear or smooth out | ease |
| Repeat | choose from Once, 2 times or Infinite | Once |
How does the CSS Animation Generator work?
Each output is derived from the inputs above in a single pass; there is no hidden state carried between runs, so the same inputs always give the same generated output.
The guard clauses run before the formula does, which is why mistakes surface next to the field.
Worked example
These are the values the CSS Animation Generator loads by default, and the result it produces from them. These are the tool’s own default values and the result they produce, not an invented illustration.
| Animation name | fadeIn |
|---|---|
| Effect | Fade in |
| Duration (s) | 0.8 |
| Easing | ease |
| Repeat | Once |
| Live preview | @keyframes yt-preview-fadeIn-fade { from { opacity: 0; } to { opacity: 1; } } .yt-preview-fadeIn-fade {… |
|---|---|
| Status | Preview ready · fade |
| CSS animation | @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } } .fadeIn { animation: fadeIn 0.8s ease 1 both; } |
| Tip | Use Replay to restart the effect. Copy the CSS below into your stylesheet. |
How to use it
- Fill in Animation name.
- Pick a value for Effect: the options are Fade in, Slide up, Slide from left, Scale in, Bounce in or Pulse.
- Enter Duration (s) (0.1 to 10).
- Pick a value for Easing: the options are ease, ease-in, ease-out, ease-in-out, linear or smooth out.
- Pick a value for Repeat: the options are Once, 2 times or Infinite.
- Watch the results panel as you type: it recalculates on every keystroke.
- The panel reports Live preview, Status, CSS animation and Tip.
- Both Copy Link and Print capture the current state, so pick whichever suits how you file things.
What this tool does not do
- Output follows the common convention for this format; a specific toolchain may have its own house style.
- Processing happens in your browser, so extremely large inputs are bounded by available memory.
- It applies one method. If your situation calls for a different convention, the answer will not match.
- Confirm the units before you act on the output. The arithmetic is only as sound as what went in.
Frequently asked questions
Animation name, Effect, Duration (s), Easing and Repeat. That is the whole form. A starting value is in place for each, which means a single edit is enough to get a meaningful answer.
Duration (s) accepts 0.1 to 10. If a value falls outside, the tool says which field is at fault instead of guessing.
With the values loaded when the page opens, live preview comes out as @keyframes yt-preview-fadeIn-fade { from { opacity: 0; } to { opacity: 1; } } .yt-preview-fadeIn-fade {…. It recalculates the moment an input changes, which makes comparing scenarios quick.
No. The parsing happens in your browser, so sensitive payloads never leave your machine.
It costs nothing, and there is no limit on repeat use.
Reliable for the case described. Where more than one convention exists, the method section says which one is used.