StyleBop

StyleBop is a visual editor for the CSS files you already have. Open a folder, get a clean canvas of every ruleset, edit colors and gradients with real pickers, build keyframe animations on a timeline, and manage design tokens across files.

It writes plain CSS to disk. No proprietary format, no build step, no lock-in. Open the same folder in any other editor and the diffs are clean.

What's inside

• Rulesets canvas — every CSS selector becomes a node you can click into. Edit properties with type-aware popovers: color picker, gradient builder, box-shadow stack, cubic-bezier curve editor, grid template, filter chain.

• Tokens tab — your :root custom properties and @font-face families in one place. Each variable has a usage tracker that shows every file and ruleset that consumes it. "0 references — safe to delete" so dead tokens stop accumulating.

• Animations tab — keyframe timeline with draggable stops, live preview running on the canvas, cubic-bezier curve editor.

• Code tab — full text view with autocompletion, smart typing (paste a hex on a color: line and it just works), and project-wide find/replace.

• Extract to Variable — pick any literal value, hit a shortcut, and StyleBop rewrites every matching occurrence across the entire project to var(--name). Suggested names use a curated palette so #6495ED becomes --color-cornflower instead of --color-6495ed.

Modern CSS

@layer cascade layers, @container container queries, @supports feature queries, @media wrappers, CSS nesting, @keyframes, @font-face — all parsed as first-class constructs and round-tripped byte-perfect on save.

Tailwind v4

@theme blocks are recognized as design-token surfaces. Tailwind-style files get Tailwind-style suggestions on Extract to Variable (--color-blue-500 instead of --color-cornflower), and new tokens land inside the existing @theme block.

Localized

UI in eight languages: English, Spanish, French, German, Italian, Brazilian Portuguese, Japanese, Simplified Chinese.

Editor integrations

Right-click any CSS file in VS Code or a JetBrains IDE and pick "Open in StyleBop" — the app launches and lands on the construct your cursor was on. Free companion extensions on the VS Code Marketplace and JetBrains Marketplace.