gitwtfhub

wtf is springish-css?

groundedsage/springish-css — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2015-11-23

JavaScriptAudience · designerComplexity · 2/5DormantSetup · easy

TL;DR

A tool that generates pure CSS keyframes for smooth, bouncy spring animations by calculating spring physics, no JavaScript runs during the animation itself.

Mindmap

mindmap
  root((repo))
    What it does
      Generates CSS keyframes
      Spring physics math
      Pure CSS output
    Tech stack
      JavaScript
      CSS
    Use cases
      Bouncy buttons
      Spring notifications
      Natural motion UI
    Audience
      Designers
      Frontend developers
    Status
      Work in progress
      SCSS mixin todo

Code map

Detail Auto

An interactive map of this repo's files and how they connect — its source is parsed live in your browser. Click Visualize to build it.

filefunction / class

Why would anyone build with this?

REASON 1

Generate spring-based CSS keyframes for a button that bounces on click.

REASON 2

Create a notification that springs in from the side without hand-tuning easing values.

REASON 3

Get physics-accurate, natural-looking motion by describing stiffness and damping instead of guessing timing.

REASON 4

Paste generated keyframes directly into your CSS for animations that run on the browser's native engine, no JS needed.

What's in the stack?

JavaScriptCSS

How it stacks up

groundedsage/springish-css3rd-eden/ircb.ioa15n/a15n
LanguageJavaScriptJavaScriptJavaScript
Last pushed2015-11-232016-11-162019-04-07
MaintenanceDormantDormantDormant
Setup difficultyeasyeasyeasy
Complexity2/52/52/5
Audiencedesignerdevelopergeneral

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 5min

Project is a work in progress, an SCSS mixin is listed as a todo.

Yoink these prompts

Prompt 1
Given a stiffness and damping value, help me use springish-css to generate the CSS keyframes for a bouncy button animation.
Prompt 2
Explain how springish-css calculates the velocity-zero points that become animation keyframes.
Prompt 3
Show me how to apply springish-css generated keyframes to a notification element that springs in from the right.
Prompt 4
Help me write the missing SCSS mixin for springish-css so I can generate spring keyframes directly in Sass.

Frequently asked questions

wtf is springish-css?

A tool that generates pure CSS keyframes for smooth, bouncy spring animations by calculating spring physics, no JavaScript runs during the animation itself.

What language is springish-css written in?

Mainly JavaScript. The stack also includes JavaScript, CSS.

Is springish-css actively maintained?

Dormant — no commits in 2+ years (last push 2015-11-23).

How hard is springish-css to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is springish-css for?

Mainly designer.

View the repo → Decode another repo

This repo across BitVibe Labs

Don't trust strangers blindly. Verify against the repo.

Other repos in this lane