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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>24×24 Icon Editor</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
min-height: 100vh;
padding: 2rem;
}
.container {
max-width: 1200px;
margin: 0 auto;
background: white;
border-radius: 1rem;
box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
padding: 2rem;
}
.header {
margin-bottom: 2rem;
}
h1 {
font-size: 2rem;
color: #1e293b;
margin-bottom: 0.5rem;
display: flex;
align-items: center;
gap: 0.75rem;
}
.subtitle {
color: #64748b;
margin-bottom: 0.5rem;
}
.save-note {
color: #2563eb;
font-size: 0.875rem;
}
.main-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 2rem;
}
@media (max-width: 768px) {
.main-grid {
grid-template-columns: 1fr;
}
}
.canvas-area {
display: flex;
flex-direction: column;
gap: 1rem;
}
.canvas-wrapper {
background: #f8fafc;
border-radius: 0.75rem;
padding: 1.5rem;
border: 2px solid #e2e8f0;
}
#displayCanvas {
border: 2px solid #cbd5e1;
border-radius: 0.5rem;
cursor: crosshair;
background: white;
box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
image-rendering: pixelated;
display: block;
width: 100%;
max-width: 384px;
height: auto;
aspect-ratio: 1;
}
.canvas-hint {
font-size: 0.875rem;
color: #64748b;
text-align: center;
margin-top: 0.75rem;
}
.panel {
background: #f8fafc;
border-radius: 0.75rem;
padding: 1rem;
border: 2px solid #e2e8f0;
margin-bottom: 1.5rem;
}
.panel h3 {
font-size: 1rem;
color: #475569;
margin-bottom: 0.75rem;
display: flex;
align-items: center;
gap: 0.5rem;
}
.btn {
padding: 0.75rem 1.5rem;
border: none;
border-radius: 0.5rem;
font-weight: 600;
cursor: pointer;
transition: all 0.2s;
font-size: 0.875rem;
display: flex;
align-items: center;
justify-content: center;
gap: 0.5rem;
}
.btn:disabled {
opacity: 0.5;
cursor: not-allowed;
}
.btn-primary {
background: #2563eb;
color: white;
box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover:not(:disabled) {
background: #1d4ed8;
}
.btn-success {
background: #16a34a;
color: white;
box-shadow: 0 4px 12px rgba(22, 163, 74, 0.3);
width: 100%;
}
.btn-success:hover {
background: #15803d;
}
.btn-danger {
background: #fef2f2;
color: #b91c1c;
border: 2px solid #fecaca;
width: 100%;
}
.btn-danger:hover {
background: #fee2e2;
}
.btn-secondary {
background: white;
color: #475569;
border: 2px solid #cbd5e1;
}
.btn-secondary:hover {
background: #f1f5f9;
}
.btn-secondary.active {
background: #2563eb;
color: white;
box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.tool-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 0.5rem;
}
.color-picker-wrapper {
display: flex;
gap: 0.75rem;
align-items: center;
margin-bottom: 0.75rem;
}
#colorPicker {
width: 4rem;
height: 4rem;
border: 2px solid #cbd5e1;
border-radius: 0.5rem;
cursor: pointer;
}
#colorInput {
flex: 1;
padding: 0.5rem;
border: 2px solid #cbd5e1;
border-radius: 0.5rem;
font-family: monospace;
font-size: 0.875rem;
}
.preset-colors {
display: grid;
grid-template-columns: repeat(5, 1fr);
gap: 0.5rem;
}
.color-btn {
width: 100%;
aspect-ratio: 1;
border: 2px solid #cbd5e1;
border-radius: 0.5rem;
cursor: pointer;
transition: all 0.2s;
}
.color-btn:hover {
transform: scale(1.05);
}
.color-btn.active {
border-color: #2563eb;
transform: scale(1.1);
box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.emoji-grid {
display: grid;
grid-template-columns: repeat(6, 1fr);
gap: 0.5rem;
margin-top: 0.75rem;
}
.emoji-btn {
font-size: 1.5rem;
padding: 0.5rem;
background: white;
border: none;
border-radius: 0.5rem;
cursor: pointer;
transition: all 0.2s;
}
.emoji-btn:hover {
background: #e2e8f0;
transform: scale(1.1);
}
.emoji-btn.more {
display: flex;
align-items: center;
justify-content: center;
border: 2px solid #cbd5e1;
color: #64748b;
font-size: 1rem;
}
.modal {
display: none;
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: rgba(0, 0, 0, 0.5);
z-index: 1000;
align-items: center;
justify-content: center;
padding: 1rem;
}
.modal.show {
display: flex;
}
.modal-content {
background: white;
border-radius: 0.75rem;
padding: 1.5rem;
max-width: 28rem;
width: 100%;
box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.modal-header {
display: flex;
justify-content: space-between;
align-items: center;
margin-bottom: 1rem;
}
.modal-header h3 {
font-size: 1.25rem;
color: #1e293b;
}
.close-btn {
background: none;
border: none;
color: #64748b;
cursor: pointer;
font-size: 1.5rem;
padding: 0;
width: 2rem;
height: 2rem;
display: flex;
align-items: center;
justify-content: center;
border-radius: 0.25rem;
}
.close-btn:hover {
color: #1e293b;
background: #f1f5f9;
}
.modal-body {
margin-bottom: 1rem;
}
.modal-body p {
color: #64748b;
margin-bottom: 1rem;
}
#customCharInput {
width: 100%;
padding: 0.75rem;
border: 2px solid #cbd5e1;
border-radius: 0.5rem;
font-size: 1.5rem;
text-align: center;
resize: none;
font-family: inherit;
}
#customCharInput:focus {
outline: none;
border-color: #2563eb;
}
.modal-footer {
display: flex;
gap: 0.75rem;
}
.modal-footer .btn {
flex: 1;
}
.icon {
width: 1.25rem;
height: 1.25rem;
display: inline-block;
vertical-align: middle;
}
</style>
</head>
<body>
<div class="container">
<div class="header">
<h1>
<svg class="icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<rect x="3" y="3" width="7" height="7"/>
<rect x="14" y="3" width="7" height="7"/>
<rect x="14" y="14" width="7" height="7"/>
<rect x="3" y="14" width="7" height="7"/>
</svg>
24×24 Icon Editor
</h1>
<p class="subtitle">Create pixel-perfect icons with transparent backgrounds</p>
<p class="save-note">💾 Your design is saved in the URL - bookmark it to save your work!</p>
</div>
<div class="main-grid">
<!-- Canvas Area -->
<div class="canvas-area">
<div class="canvas-wrapper">
<canvas id="displayCanvas" width="384" height="384"></canvas>
<p class="canvas-hint">Click and drag to <span id="toolHint">draw</span> pixels</p>
</div>
<button class="btn btn-success" id="downloadBtn">
<svg class="icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/>
<polyline points="7 10 12 15 17 10"/>
<line x1="12" y1="15" x2="12" y2="3"/>
</svg>
Download PNG (24×24)
</button>
</div>
<!-- Tools Panel -->
<div>
<!-- Tool Selection -->
<div class="panel">
<h3>
<svg class="icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<circle cx="13.5" cy="6.5" r=".5"/>
<circle cx="17.5" cy="10.5" r=".5"/>
<circle cx="8.5" cy="7.5" r=".5"/>
<circle cx="6.5" cy="12.5" r=".5"/>
<path d="M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10c.926 0 1.648-.746 1.648-1.688 0-.437-.18-.835-.437-1.125-.29-.289-.438-.652-.438-1.125a1.64 1.64 0 0 1 1.668-1.668h1.996c3.051 0 5.555-2.503 5.555-5.554C21.965 6.012 17.461 2 12 2z"/>
</svg>
Tools
</h3>
<div class="tool-grid">
<button class="btn btn-secondary active" id="drawBtn">
<svg class="icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<circle cx="13.5" cy="6.5" r=".5"/>
<circle cx="17.5" cy="10.5" r=".5"/>
<circle cx="8.5" cy="7.5" r=".5"/>
<circle cx="6.5" cy="12.5" r=".5"/>
<path d="M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10c.926 0 1.648-.746 1.648-1.688 0-.437-.18-.835-.437-1.125-.29-.289-.438-.652-.438-1.125a1.64 1.64 0 0 1 1.668-1.668h1.996c3.051 0 5.555-2.503 5.555-5.554C21.965 6.012 17.461 2 12 2z"/>
</svg>
Draw
</button>
<button class="btn btn-secondary" id="eraseBtn">
<svg class="icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<path d="m7 21-4.3-4.3c-1-1-1-2.5 0-3.4l9.6-9.6c1-1 2.5-1 3.4 0l5.6 5.6c1 1 1 2.5 0 3.4L13 21"/>
<path d="M22 21H7"/>
<path d="m5 11 9 9"/>
</svg>
Erase
</button>
</div>
</div>
<!-- Color Picker -->
<div class="panel">
<h3>Color</h3>
<div class="color-picker-wrapper">
<input type="color" id="colorPicker" value="#000000">
<input type="text" id="colorInput" value="#000000">
</div>
<div class="preset-colors" id="presetColors"></div>
</div>
<!-- Emoji Starter -->
<div class="panel">
<h3>Start with Emoji</h3>
<button class="btn btn-secondary" id="toggleEmojiBtn" style="width: 100%;">Show Emojis</button>
<div id="emojiGrid" class="emoji-grid" style="display: none;"></div>
</div>
<!-- Clear Button -->
<button class="btn btn-danger" id="clearBtn">
<svg class="icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<polyline points="3 6 5 6 21 6"/>
<path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/>
</svg>
Clear Canvas
</button>
</div>
</div>
</div>
<!-- Custom Character Modal -->
<div class="modal" id="customCharModal">
<div class="modal-content">
<div class="modal-header">
<h3>Enter Character</h3>
<button class="close-btn" id="closeModalBtn">×</button>
</div>
<div class="modal-body">
<p>Enter any emoji, letter, number, or symbol:</p>
<textarea id="customCharInput" rows="3" placeholder="Type or paste here... (e.g., A, ⚡, 🦄)"></textarea>
</div>
<div class="modal-footer">
<button class="btn btn-secondary" id="cancelModalBtn">Cancel</button>
<button class="btn btn-primary" id="applyModalBtn">Apply</button>
</div>
</div>
</div>
<script>
// State
let pixels = Array(24).fill(null).map(() => Array(24).fill('transparent'));
let currentColor = '#000000';
let isDrawing = false;
let currentTool = 'draw';
let showingEmojis = false;
// Elements
const canvas = document.getElementById('displayCanvas');
const ctx = canvas.getContext('2d');
const colorPicker = document.getElementById('colorPicker');
const colorInput = document.getElementById('colorInput');
const drawBtn = document.getElementById('drawBtn');
const eraseBtn = document.getElementById('eraseBtn');
const downloadBtn = document.getElementById('downloadBtn');
const clearBtn = document.getElementById('clearBtn');
const toggleEmojiBtn = document.getElementById('toggleEmojiBtn');
const emojiGrid = document.getElementById('emojiGrid');
const presetColorsDiv = document.getElementById('presetColors');
const toolHint = document.getElementById('toolHint');
const customCharModal = document.getElementById('customCharModal');
const customCharInput = document.getElementById('customCharInput');
const closeModalBtn = document.getElementById('closeModalBtn');
const cancelModalBtn = document.getElementById('cancelModalBtn');
const applyModalBtn = document.getElementById('applyModalBtn');
// Constants
const commonEmojis = [
'😀', '😎', '🎉', '❤️', '⭐', '🔥', '💡', '🎨',
'🚀', '🎯', '💼', '📱', '🏠', '🎵', '🍕', '⚡',
'✨', '🌟', '💎', '🎪', '🎭', '🎬', '📷', '🎮'
];
const presetColors = [
'#000000', '#FFFFFF', '#FF0000', '#00FF00', '#0000FF',
'#FFFF00', '#FF00FF', '#00FFFF', '#FFA500', '#800080'
];
// Initialize
function init() {
loadFromHash();
renderCanvas();
setupPresetColors();
setupEmojiGrid();
setupEventListeners();
}
// URL Hash persistence
function encodePixelsToHash(pixels) {
const colorMap = new Map();
let colorIndex = 0;
const encoded = [];
pixels.forEach((row) => {
row.forEach((color) => {
if (color === 'transparent') {
encoded.push('_');
} else {
if (!colorMap.has(color)) {
colorMap.set(color, colorIndex++);
}
encoded.push(colorMap.get(color).toString(36));
}
});
});
const colorPalette = Array.from(colorMap.entries())
.sort((a, b) => a[1] - b[1])
.map(([color]) => color)
.join(',');
return btoa(colorPalette + '|' + encoded.join('')).replace(/=/g, '');
}
function decodePixelsFromHash(hash) {
try {
const decoded = atob(hash + '=='.slice(0, (4 - hash.length % 4) % 4));
const [colorPalette, pixelData] = decoded.split('|');
const colors = colorPalette ? colorPalette.split(',') : [];
const newPixels = Array(24).fill(null).map(() => Array(24).fill('transparent'));
let idx = 0;
for (let y = 0; y < 24; y++) {
for (let x = 0; x < 24; x++) {
const char = pixelData[idx++];
if (char !== '_') {
const colorIndex = parseInt(char, 36);
newPixels[y][x] = colors[colorIndex] || 'transparent';
}
}
}
return newPixels;
} catch (e) {
console.error('Failed to decode hash:', e);
return Array(24).fill(null).map(() => Array(24).fill('transparent'));
}
}
function loadFromHash() {
const hash = window.location.hash.slice(1);
if (hash) {
pixels = decodePixelsFromHash(hash);
}
}
function updateHash() {
const hash = encodePixelsToHash(pixels);
window.history.replaceState(null, '', '#' + hash);
}
// Render canvas
function renderCanvas() {
const scale = 16;
ctx.clearRect(0, 0, canvas.width, canvas.height);
// Draw pixels
pixels.forEach((row, y) => {
row.forEach((color, x) => {
if (color !== 'transparent') {
ctx.fillStyle = color;
ctx.fillRect(x * scale, y * scale, scale, scale);
}
});
});
// Draw grid
ctx.strokeStyle = '#e0e0e0';
ctx.lineWidth = 0.5;
for (let i = 0; i <= 24; i++) {
ctx.beginPath();
ctx.moveTo(i * scale, 0);
ctx.lineTo(i * scale, 24 * scale);
ctx.stroke();
ctx.beginPath();
ctx.moveTo(0, i * scale);
ctx.lineTo(24 * scale, i * scale);
ctx.stroke();
}
updateHash();
}
// Canvas interaction
function getPixelCoords(e) {
const rect = canvas.getBoundingClientRect();
const scale = 16;
const x = Math.floor((e.clientX - rect.left) / (rect.width / 24));
const y = Math.floor((e.clientY - rect.top) / (rect.height / 24));
return { x, y };
}
function drawPixel(x, y) {
if (x >= 0 && x < 24 && y >= 0 && y < 24) {
pixels[y][x] = currentTool === 'draw' ? currentColor : 'transparent';
renderCanvas();
}
}
// Setup preset colors
function setupPresetColors() {
presetColors.forEach(color => {
const btn = document.createElement('button');
btn.className = 'color-btn';
btn.style.backgroundColor = color;
btn.title = color;
btn.onclick = () => {
currentColor = color;
colorPicker.value = color;
colorInput.value = color;
updateColorSelection();
};
presetColorsDiv.appendChild(btn);
});
updateColorSelection();
}
function updateColorSelection() {
document.querySelectorAll('.color-btn').forEach((btn, idx) => {
btn.classList.toggle('active', presetColors[idx] === currentColor);
});
}
// Setup emoji grid
function setupEmojiGrid() {
commonEmojis.forEach(emoji => {
const btn = document.createElement('button');
btn.className = 'emoji-btn';
btn.textContent = emoji;
btn.onclick = () => loadCharacter(emoji);
emojiGrid.appendChild(btn);
});
// Add "more" button
const moreBtn = document.createElement('button');
moreBtn.className = 'emoji-btn more';
moreBtn.innerHTML = '···';
moreBtn.title = 'Enter custom character';
moreBtn.onclick = () => showCustomCharModal();
emojiGrid.appendChild(moreBtn);
}
// Load character onto canvas
function loadCharacter(char) {
const tempCanvas = document.createElement('canvas');
tempCanvas.width = 24;
tempCanvas.height = 24;
const tempCtx = tempCanvas.getContext('2d');
tempCtx.font = '20px Arial';
tempCtx.textAlign = 'center';
tempCtx.textBaseline = 'middle';
tempCtx.fillText(char, 12, 12);
const imageData = tempCtx.getImageData(0, 0, 24, 24);
pixels = Array(24).fill(null).map(() => Array(24).fill('transparent'));
for (let y = 0; y < 24; y++) {
for (let x = 0; x < 24; x++) {
const idx = (y * 24 + x) * 4;
const a = imageData.data[idx + 3];
if (a > 128) {
const r = imageData.data[idx];
const g = imageData.data[idx + 1];
const b = imageData.data[idx + 2];
pixels[y][x] = `rgb(${r}, ${g}, ${b})`;
}
}
}
renderCanvas();
hideEmojiPicker();
}
// Custom character modal
function showCustomCharModal() {
customCharModal.classList.add('show');
customCharInput.value = '';
customCharInput.focus();
}
function hideCustomCharModal() {
customCharModal.classList.remove('show');
}
function applyCustomChar() {
const char = customCharInput.value.trim();
if (char) {
loadCharacter(char);
hideCustomCharModal();
}
}
// Export PNG
function exportPNG() {
const exportCanvas = document.createElement('canvas');
exportCanvas.width = 24;
exportCanvas.height = 24;
const exportCtx = exportCanvas.getContext('2d');
pixels.forEach((row, y) => {
row.forEach((color, x) => {
if (color !== 'transparent') {
exportCtx.fillStyle = color;
exportCtx.fillRect(x, y, 1, 1);
}
});
});
exportCanvas.toBlob((blob) => {
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = 'icon-24x24.png';
a.click();
URL.revokeObjectURL(url);
});
}
// Clear canvas
function clearCanvas() {
pixels = Array(24).fill(null).map(() => Array(24).fill('transparent'));
renderCanvas();
}
// Toggle emoji picker
function toggleEmojiPicker() {
showingEmojis = !showingEmojis;
emojiGrid.style.display = showingEmojis ? 'grid' : 'none';
toggleEmojiBtn.textContent = showingEmojis ? 'Hide Emojis' : 'Show Emojis';
}
function hideEmojiPicker() {
showingEmojis = false;
emojiGrid.style.display = 'none';
toggleEmojiBtn.textContent = 'Show Emojis';
}
// Set tool
function setTool(tool) {
currentTool = tool;
drawBtn.classList.toggle('active', tool === 'draw');
eraseBtn.classList.toggle('active', tool === 'erase');
toolHint.textContent = tool;
}
// Event listeners
function setupEventListeners() {
// Canvas
canvas.addEventListener('mousedown', (e) => {
isDrawing = true;
const { x, y } = getPixelCoords(e);
drawPixel(x, y);
});
canvas.addEventListener('mousemove', (e) => {
if (isDrawing) {
const { x, y } = getPixelCoords(e);
drawPixel(x, y);
}
});
canvas.addEventListener('mouseup', () => {
isDrawing = false;
});
canvas.addEventListener('mouseleave', () => {
isDrawing = false;
});
// Touch support
canvas.addEventListener('touchstart', (e) => {
e.preventDefault();
isDrawing = true;
const touch = e.touches[0];
const mouseEvent = new MouseEvent('mousedown', {
clientX: touch.clientX,
clientY: touch.clientY
});
canvas.dispatchEvent(mouseEvent);
});
canvas.addEventListener('touchmove', (e) => {
e.preventDefault();
if (isDrawing) {
const touch = e.touches[0];
const mouseEvent = new MouseEvent('mousemove', {
clientX: touch.clientX,
clientY: touch.clientY
});
canvas.dispatchEvent(mouseEvent);
}
});
canvas.addEventListener('touchend', (e) => {
e.preventDefault();
isDrawing = false;
});
// Color picker
colorPicker.addEventListener('input', (e) => {
currentColor = e.target.value;
colorInput.value = e.target.value;
updateColorSelection();
});
colorInput.addEventListener('input', (e) => {
const color = e.target.value;
if (/^#[0-9A-Fa-f]{6}$/.test(color)) {
currentColor = color;
colorPicker.value = color;
updateColorSelection();
}
});
// Tools
drawBtn.addEventListener('click', () => setTool('draw'));
eraseBtn.addEventListener('click', () => setTool('erase'));
// Actions
downloadBtn.addEventListener('click', exportPNG);
clearBtn.addEventListener('click', clearCanvas);
toggleEmojiBtn.addEventListener('click', toggleEmojiPicker);
// Modal
closeModalBtn.addEventListener('click', hideCustomCharModal);
cancelModalBtn.addEventListener('click', hideCustomCharModal);
applyModalBtn.addEventListener('click', applyCustomChar);
customCharModal.addEventListener('click', (e) => {
if (e.target === customCharModal) {
hideCustomCharModal();
}
});
customCharInput.addEventListener('keydown', (e) => {
if (e.key === 'Enter' && !e.shiftKey) {
e.preventDefault();
applyCustomChar();
}
});
}
// Start the app
init();
</script>
</body>
</html>