Progress Indicator Button - Free UI Component

Base Color #1e293b

Progress Fill Color #3b82f6

Text Color #ffffff

Button Label Downloading Data

Progress (%) 65

Rounding (px) 8

Vertical Padding (rem) 1

Horizontal Padding (rem) 2.5

Font Size (rem) 1.1

Progress Indicator Button

A high-visibility progress button that fills dynamically based on a percentage value. Includes a subtle CSS shimmer effect and smooth width transitions.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Progress Indicator Button</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap" rel="stylesheet">
    <style>
        /* -- Variables ------------------------------------------------- */
        :root {
            --primary: {{primaryColor}};         /* Main Button Color */
            --progress-bg: {{progressColor}};    /* Progress Bar Fill Color */
            --text: {{textColor}};               /* Button Text Color */
            --radius: {{borderRadius}}px;        /* Corner Rounding */
            --v-pad: {{vPadding}}rem;            /* Top/Bottom Padding */
            --h-pad: {{hPadding}}rem;            /* Left/Right Padding */
            --font-size: {{fontSize}}rem;        /* Text Size */
            --progress: {{progressValue}}%;      /* Progress Completion 0-100 */
            --page-bg: #0f172a;                  /* Preview Background */
        }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
            font-family: 'Plus Jakarta Sans', sans-serif;
            background-color: var(--page-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            color: #fff;
        }

/* -- Button Implementation --------------------------------------- */
        .btn-progress {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: var(--v-pad) var(--h-pad);
            font-size: var(--font-size);
            font-weight: 700;
            color: var(--text);
            background: var(--primary);
            border: none;
            border-radius: var(--radius);
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 4px 14px 0 rgba(0, 0, 0, 0.3);
            overflow: hidden;
            min-width: 220px;
            outline: none;
            z-index: 1;
        }

.btn-progress:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px 0 rgba(0, 0, 0, 0.4);
        }

.btn-progress:active {
            transform: translateY(0);
        }

/* Progress Layer */
        .btn-progress::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--progress);
            background: var(--progress-bg);
            transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: -1;
            opacity: 0.8;
        }

/* Shimmer Effect on Progress */
        .btn-progress::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            height: 100%;
            width: 100%;
            background: linear-gradient(
                90deg, 
                transparent, 
                rgba(255, 255, 255, 0.1), 
                transparent
            );
            transform: translateX(-100%);
            z-index: 0;
            pointer-events: none;
        }

.btn-progress:hover::after {
            animation: shimmer 2s infinite;
        }

@keyframes shimmer {
            100% { transform: translateX(100%); }
        }

/* Text Styling to remain readable */
        .btn-text {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 10px;
            text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
        }

/* Percent Counter (Optional visual) */
        .percent-label {
            font-size: 0.8em;
            opacity: 0.8;
            font-weight: 500;
        }

</style>
</head>
<body>

<button class="btn-progress" onclick="let p = parseInt(getComputedStyle(this).getPropertyValue('--progress')); this.style.setProperty('--progress', (p >= 100 ? 0 : p + 10) + '%')">
        <span class="btn-text">
            {{buttonText}}
            <span class="percent-label">{{progressValue}}%</span>
        </span>
    </button>

</body>
</html>