File-Convert/index.html at main · CultureSupport/File-Convert · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Circular Media Converter</title>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.4.120/pdf.min.js"></script>
    <script src="https://cdn.tailwindcss.com"></script>
    <style>
        :root {
            --rotation: 0deg;
        }

        body {
            background: #0f172a;
            color: white;
            font-family: 'Inter', sans-serif;
            overflow-x: hidden;
        }

        .wheel-container {
            position: relative;
            width: 350px;
            height: 350px;
            transition: transform 1s cubic-bezier(0.4, 0, 0.2, 1);
            transform: rotate(var(--rotation));
        }

        .extension-node {
            position: absolute;
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #1e293b;
            border: 2px solid #3b82f6;
            cursor: pointer;
            transition: all 0.3s ease;
            transform: translate(-50%, -50%);
            left: 50%;
            top: 50%;
        }

        .extension-node.active {
            background: #3b82f6;
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
            transform: translate(-50%, -50%) scale(1.2);
        }

        .node-text {
            transform: rotate(calc(-1 * var(--rotation)));
            font-weight: bold;
            pointer-events: none;
        }

        .center-action {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 120px;
            height: 120px;
            background: white;
            border-radius: 50%;
            color: #0f172a;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 10;
            text-align: center;
            padding: 10px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.3);
        }

        .hidden-input {
            display: none;
        }

        .status-pulse {
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.05); opacity: 0.8; }
            100% { transform: scale(1); opacity: 1; }
        }

        input[type=range] {
            accent-color: #3b82f6;
        }
    </style>
</head>
<body class="flex flex-col items-center justify-center min-h-screen p-4">

    <div class="text-center mb-8">
        <h1 class="text-3xl font-bold mb-2 uppercase tracking-widest">Hard Compressor</h1>
        <p class="text-slate-400">Strict Limit: 200kb - 900kb</p>
    </div>

    <!-- Compression Slider -->
    <div class="mb-10 w-full max-w-xs bg-slate-800/50 p-4 rounded-2xl border border-slate-700">
        <div class="flex justify-between text-xs mb-2 text-slate-400 font-bold uppercase tracking-tighter">
            <span>Tight (200kb)</span>
            <span id="targetLabel" class="text-blue-400">Limit: 500kb</span>
            <span>Max (900kb)</span>
        </div>
        <input type="range" id="sizeSlider" min="200" max="900" value="500" class="w-full h-2 bg-slate-700 rounded-lg appearance-none cursor-pointer">
        <p class="text-[9px] text-center mt-2 text-slate-500 italic">Large files (3MB+) will be auto-downscaled to fit.</p>
    </div>

    <!-- Interface Wrapper -->
    <div class="relative flex items-center justify-center">
        <div id="wheel" class="wheel-container">
            <!-- Nodes placed via JS -->
        </div>

        <div id="uploadBtn" class="center-action group hover:bg-blue-50">
            <svg xmlns="http://www.w3.org/2000/svg" class="w-8 h-8 mb-1" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-8l-4-4m0 0L8 8m4-4v12" />
            </svg>
            <span class="text-xs font-bold uppercase tracking-wider" id="actionLabel">Select Format</span>
        </div>
    </div>

    <input type="file" id="fileInput" class="hidden-input" accept=".png,.jpg,.jpeg,.pdf">

    <!-- Progress UI -->
    <div id="progressArea" class="mt-12 w-full max-w-md hidden">
        <div class="bg-slate-800 rounded-xl p-6 shadow-xl border border-slate-700">
            <div class="flex justify-between items-center mb-4">
                <span id="fileNameDisplay" class="truncate font-medium text-blue-400">file.png</span>
                <span id="statusBadge" class="text-xs bg-blue-500/20 text-blue-400 px-2 py-1 rounded">Processing</span>
            </div>
            <div class="w-full bg-slate-700 rounded-full h-2 mb-2">
                <div id="progressBar" class="bg-blue-500 h-2 rounded-full transition-all duration-300" style="width: 0%"></div>
            </div>
            <p id="sizeReductionInfo" class="text-[10px] text-slate-400 mb-4 text-center"></p>
            <div id="downloadLinkContainer"></div>
        </div>
    </div>

    <script>
        pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.4.120/pdf.worker.min.js';

        const formats = ['JPG', 'PNG', 'PDF'];
        const wheel = document.getElementById('wheel');
        const uploadBtn = document.getElementById('uploadBtn');
        const fileInput = document.getElementById('fileInput');
        const actionLabel = document.getElementById('actionLabel');
        const progressArea = document.getElementById('progressArea');
        const progressBar = document.getElementById('progressBar');
        const fileNameDisplay = document.getElementById('fileNameDisplay');
        const downloadContainer = document.getElementById('downloadLinkContainer');
        const sizeSlider = document.getElementById('sizeSlider');
        const targetLabel = document.getElementById('targetLabel');
        const sizeInfo = document.getElementById('sizeReductionInfo');

        let selectedFormat = null;
        let currentRotation = 0;

        sizeSlider.oninput = (e) => {
            targetLabel.innerText = `Limit: ${e.target.value}kb`;
        };

        function initWheel() {
            const radius = 140;
            formats.forEach((fmt, i) => {
                const node = document.createElement('div');
                node.className = 'extension-node';
                node.dataset.format = fmt;
                const angle = (i * (360 / formats.length)) * (Math.PI / 180);
                const x = 175 + radius * Math.cos(angle);
                const y = 175 + radius * Math.sin(angle);
                node.style.left = `${x}px`;
                node.style.top = `${y}px`;
                node.innerHTML = `<span class="node-text">${fmt}</span>`;
                node.onclick = () => selectFormat(fmt, i);
                wheel.appendChild(node);
            });
        }

        function selectFormat(fmt, index) {
            selectedFormat = fmt;
            const targetAngle = (index * (360 / formats.length));
            currentRotation = -targetAngle - 90;
            document.documentElement.style.setProperty('--rotation', `${currentRotation}deg`);
            document.querySelectorAll('.extension-node').forEach(n => n.classList.remove('active'));
            document.querySelectorAll('.extension-node')[index].classList.add('active');
            actionLabel.innerText = `Upload for ${fmt}`;
            uploadBtn.classList.add('status-pulse');
        }

        uploadBtn.onclick = () => {
            if (!selectedFormat) return;
            fileInput.click();
        };

        fileInput.onchange = async (e) => {
            const file = e.target.files[0];
            if (!file) return;

            progressArea.classList.remove('hidden');
            fileNameDisplay.innerText = file.name;
            progressBar.style.width = '10%';
            downloadContainer.innerHTML = '';
            sizeInfo.innerText = "Applying hard compression limits...";
            document.getElementById('statusBadge').innerText = 'Processing';

            try {
                let sourceData;
                if (file.type === 'application/pdf') {
                    sourceData = await pdfToImageData(file);
                } else {
                    sourceData = await fileToImageData(file);
                }

                progressBar.style.width = '40%';
                const targetSizeKB = parseInt(sizeSlider.value);

                // Hard Compression Logic: Quality + Scaling
                const resultBlob = await hardCompress(sourceData, targetSizeKB, selectedFormat);

                progressBar.style.width = '100%';
                const finalSizeKB = (resultBlob.size / 1024).toFixed(1);
                sizeInfo.innerText = `Original: ${(file.size/1024/1024).toFixed(1)}MB -> Final: ${finalSizeKB}KB`;

                const url = URL.createObjectURL(resultBlob);
                const name = `compressed_${Date.now()}.${selectedFormat.toLowerCase()}`;

                downloadContainer.innerHTML = `
                    <a href="${url}" download="${name}" class="block w-full text-center bg-blue-600 hover:bg-blue-500 text-white font-bold py-3 rounded-lg shadow-xl uppercase tracking-widest text-sm">
                        Download Result
                    </a>
                `;
                document.getElementById('statusBadge').innerText = 'Ready';
                document.getElementById('statusBadge').className = 'text-xs bg-green-500/20 text-green-400 px-2 py-1 rounded';
            } catch (err) {
                console.error(err);
                document.getElementById('statusBadge').innerText = 'Failed';
                sizeInfo.innerText = "Error: File too complex or invalid.";
            }
        };

        async function fileToImageData(file) {
            return new Promise((resolve) => {
                const reader = new FileReader();
                reader.onload = (e) => {
                    const img = new Image();
                    img.onload = () => resolve(img);
                    img.src = e.target.result;
                };
                reader.readAsDataURL(file);
            });
        }

        async function pdfToImageData(file) {
            const arrayBuffer = await file.arrayBuffer();
            const pdf = await pdfjsLib.getDocument(arrayBuffer).promise;
            const page = await pdf.getPage(1);
            const viewport = page.getViewport({ scale: 2.0 });
            const canvas = document.createElement('canvas');
            canvas.height = viewport.height;
            canvas.width = viewport.width;
            await page.render({ canvasContext: canvas.getContext('2d'), viewport }).promise;
            const img = new Image();
            img.src = canvas.toDataURL();
            return new Promise(resolve => img.onload = () => resolve(img));
        }

        async function hardCompress(img, targetKB, format) {
            const mime = `image/${format === 'JPG' ? 'jpeg' : format.toLowerCase()}`;
            let scale = 1.0;
            let quality = 0.85;
            let blob = null;
            let attempts = 0;

            // Step 1: Quality Binary Search (Up to 5 iterations)
            while (attempts < 5) {
                blob = await getBlob(img, scale, quality, mime, format);
                if (blob.size / 1024 <= targetKB) break;
                quality -= 0.15;
                if (quality < 0.2) break;
                attempts++;
            }

            // Step 2: Hard Scaling (If quality reduction wasn't enough)
            // This is how we get a 3MB file under 500KB reliably
            while (blob.size / 1024 > targetKB && scale > 0.1) {
                scale -= 0.15;
                blob = await getBlob(img, scale, quality, mime, format);
            }

            return blob;
        }

        function getBlob(img, scale, quality, mime, format) {
            return new Promise(resolve => {
                const canvas = document.createElement('canvas');
                canvas.width = img.width * scale;
                canvas.height = img.height * scale;
                const ctx = canvas.getContext('2d');

                if (format === 'JPG') {
                    ctx.fillStyle = '#FFFFFF';
                    ctx.fillRect(0, 0, canvas.width, canvas.height);
                }

                ctx.drawImage(img, 0, 0, canvas.width, canvas.height);

                if (format === 'PNG') {
                    canvas.toBlob(resolve, mime);
                } else {
                    canvas.toBlob(resolve, mime, quality);
                }
            });
        }

        initWheel();
    </script>
</body>
</html>