File Converter
\n';
// Image formats
case 'png':
// Minimal PNG file
return hexToBinary('89504E470D0A1A0A0000000D4948445200000001000000010802000000907753DE0000000C4944415408D763F8FFFF3F0005FE02FEDCCC59E70000000049454E44AE426082');
case 'jpg':
// Minimal JPEG file
return hexToBinary('FFD8FFE000104A46494600010101006000600000FFDB0043000302020202030202020303030303040303030304040508080805050406060606060606070708080707060606060606060606060606060606060606060606060606060606060606FFC0000B0800010001011100FFC40014000100000000000000000000000000000000FFC40014100100000000000000000000000000000000FFDA0008010100003F00D2CF20FFD9');
case 'gif':
// Minimal GIF file
return hexToBinary('474946383961010001008000002C00000000010001000002003B');
// Audio formats
case 'mp3':
// Minimal MP3 file (ID3 header + empty frame)
return 'ID3\x03\x00\x00\x00\x00\x00\x00TSSE\x00\x00\x00\x0f\x00\x00\x03LAME3.98.2\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFB\x90\x00' +
repeatBytes('\x00', 1000); // Simulate some audio data
case 'wav':
// Minimal WAV file (RIFF header)
return 'RIFF\x24\x00\x00\x00WAVEfmt \x10\x00\x00\x00\x01\x00\x01\x00\x44\xAC\x00\x00\x88\x58\x01\x00\x02\x00\x10\x00data\x00\x00\x00\x00';
// Video formats
case 'mp4':
// Minimal MP4 file (ftyp header)
return 'ftypmp42' + repeatBytes('\x00', 8) + 'mdat' + repeatBytes('\x00', 12);
case 'avi':
// Minimal AVI file
return 'RIFF\x30\x00\x00\x00AVI LIST\x18\x00\x00\x00hdrlavih' + repeatBytes('\x00', 16);
default:
return `This is a sample ${type} file converted to ${format} format.`;
}
}
// Helper functions
function setupFileHandling(prefix) {
const dropzone = document.getElementById(`${prefix}-dropzone`);
const fileInput = document.getElementById(`${prefix}-file`);
const fileinfo = document.getElementById(`${prefix}-fileinfo`);
const filename = document.getElementById(`${prefix}-filename`);
const filesize = document.getElementById(`${prefix}-filesize`);
const convertBtn = document.getElementById(`${prefix}-convert`);
const errorEl = document.getElementById(`${prefix}-error`);
// Click to browse files
dropzone.addEventListener('click', () => fileInput.click());
// Handle file selection
fileInput.addEventListener('change', function(e) {
if (this.files && this.files[0]) {
handleFile(this.files[0], prefix);
}
});
// Drag and drop events
dropzone.addEventListener('dragover', function(e) {
e.preventDefault();
this.classList.add('active');
});
dropzone.addEventListener('dragleave', function() {
this.classList.remove('active');
});
dropzone.addEventListener('drop', function(e) {
e.preventDefault();
this.classList.remove('active');
if (e.dataTransfer.files && e.dataTransfer.files[0]) {
handleFile(e.dataTransfer.files[0], prefix);
}
});
function handleFile(file, prefix) {
// Validate file type
let isValid = false;
const fileType = file.type.split('/')[0];
const ext = file.name.split('.').pop().toLowerCase();
// Document validation
if (prefix === 'doc') {
const docExts = ['pdf', 'doc', 'docx', 'txt', 'rtf', 'odt', 'ppt', 'pptx', 'xls', 'xlsx', 'csv', 'xml', 'html', 'epub', 'mobi', 'pages', 'numbers', 'key'];
isValid = docExts.includes(ext);
}
// Image validation
else if (prefix === 'img') {
const imgExts = ['jpg', 'jpeg', 'png', 'gif', 'webp', 'bmp', 'tiff', 'svg', 'ico', 'heic', 'avif'];
isValid = imgExts.includes(ext) || fileType === 'image';
}
// Audio validation
else if (prefix === 'audio') {
const audioExts = ['mp3', 'wav', 'ogg', 'flac', 'aac', 'm4a', 'wma', 'opus', 'amr', 'aiff'];
isValid = audioExts.includes(ext) || fileType === 'audio';
}
// Video validation
else if (prefix === 'video') {
const videoExts = ['mp4', 'avi', 'mov', 'mkv', 'webm', 'wmv', 'flv', 'mpeg', 'mpg', '3gp'];
isValid = videoExts.includes(ext) || fileType === 'video';
}
if (!isValid) {
errorEl.style.display = 'block';
fileinfo.classList.remove('show');
convertBtn.disabled = true;
return;
}
errorEl.style.display = 'none';
// Display file info
filename.textContent = 'File: ' + file.name;
filesize.textContent = 'Size: ' + formatFileSize(file.size);
// Additional info for specific types
if (prefix === 'audio' || prefix === 'video') {
const durationEl = document.getElementById(`${prefix}-duration`);
durationEl.textContent = 'Duration: ' + getRandomDuration();
}
if (prefix === 'video') {
const resolutionEl = document.getElementById(`${prefix}-resolution`);
resolutionEl.textContent = 'Resolution: ' + getRandomResolution();
const framerateEl = document.getElementById(`${prefix}-framerate`);
framerateEl.textContent = 'Frame rate: ' + getRandomFramerate() + ' fps';
}
if (prefix === 'audio') {
const bitrateEl = document.getElementById(`${prefix}-bitrate`);
bitrateEl.textContent = 'Bitrate: ' + getRandomBitrate() + ' kbps';
}
if (prefix === 'img') {
const dimensionsEl = document.getElementById(`${prefix}-dimensions`);
dimensionsEl.textContent = 'Dimensions: ' + getRandomDimensions();
}
fileinfo.classList.add('show');
convertBtn.disabled = false;
}
}
function simulateConversion(prefix) {
const progressBar = document.getElementById(`${prefix}-progress-bar`);
const progressContainer = document.getElementById(`${prefix}-progress`);
const resultsContainer = document.getElementById(`${prefix}-results`);
const originalFormatEl = document.getElementById(`${prefix}-original-format`);
const convertedFormatEl = document.getElementById(`${prefix}-converted-format`);
const convertedSizeEl = document.getElementById(`${prefix}-converted-size`);
const downloadBtn = document.getElementById(`${prefix}-download`);
// Get selected format - now showing the full option text
const formatSelect = document.getElementById(`${prefix}-format`);
const selectedFormat = formatSelect.options[formatSelect.selectedIndex].text;
// Set original format (from filename)
const filename = document.getElementById(`${prefix}-filename`).textContent;
const originalFormat = filename.split('.').pop().toUpperCase();
// Show progress
progressContainer.style.display = 'block';
// Simulate conversion progress
let progress = 0;
const interval = setInterval(() => {
progress += Math.random() * 10;
if (progress >= 100) {
progress = 100;
clearInterval(interval);
// Show results with full format name
originalFormatEl.textContent = originalFormat;
convertedFormatEl.textContent = selectedFormat;
// Simulate file size change
const originalSizeText = document.getElementById(`${prefix}-filesize`).textContent;
const originalSize = parseFloat(originalSizeText.split(' ')[1]);
const sizeChange = 0.7 + Math.random() * 0.6;
const newSize = originalSize * sizeChange;
convertedSizeEl.textContent = formatFileSize(newSize * 1024 * 1024);
// Additional result fields for specific types
if (prefix === 'img') {
const dimensionsEl = document.getElementById('img-converted-dimensions');
const width = document.getElementById('img-width').value || getRandomWidth();
const height = document.getElementById('img-height').value || getRandomHeight();
dimensionsEl.textContent = width + '×' + height;
}
if (prefix === 'audio') {
const bitrateEl = document.getElementById('audio-converted-bitrate');
const bitrateSelect = document.getElementById('audio-bitrate');
bitrateEl.textContent = bitrateSelect.options[bitrateSelect.selectedIndex].text;
const durationEl = document.getElementById('audio-converted-duration');
durationEl.textContent = document.getElementById('audio-duration').textContent.split(' ')[1];
}
if (prefix === 'video') {
const resolutionEl = document.getElementById('video-converted-resolution');
const resolutionSelect = document.getElementById('video-resolution');
resolutionEl.textContent = resolutionSelect.value === 'original'
? document.getElementById('video-resolution').textContent.split(' ')[1]
: resolutionSelect.options[resolutionSelect.selectedIndex].text;
const framerateEl = document.getElementById('video-converted-framerate');
const framerateSelect = document.getElementById('video-framerate');
framerateEl.textContent = framerateSelect.value === 'original'
? document.getElementById('video-framerate').textContent.split(' ')[2] + ' fps'
: framerateSelect.options[framerateSelect.selectedIndex].text;
const durationEl = document.getElementById('video-converted-duration');
durationEl.textContent = document.getElementById('video-duration').textContent.split(' ')[1];
}
// Show download button
downloadBtn.style.display = 'block';
downloadBtn.href = "#";
// Show results
resultsContainer.classList.add('show');
// Hide progress bar after a delay
setTimeout(() => {
progressContainer.style.display = 'none';
}, 500);
}
progressBar.style.width = progress + '%';
}, 200);
}
function formatFileSize(bytes) {
if (bytes === 0) return '0 Bytes';
const k = 1024;
const sizes = ['Bytes', 'KB', 'MB', 'GB'];
const i = Math.floor(Math.log(bytes) / Math.log(k));
return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
}
function getRandomDuration() {
const minutes = Math.floor(Math.random() * 10) + 1;
const seconds = Math.floor(Math.random() * 60);
return minutes + ':' + (seconds < 10 ? '0' + seconds : seconds);
}
function getRandomResolution() {
const resolutions = ['640×480', '1280×720', '1920×1080', '3840×2160'];
return resolutions[Math.floor(Math.random() * resolutions.length)];
}
function getRandomFramerate() {
const framerates = [24, 25, 30, 50, 60];
return framerates[Math.floor(Math.random() * framerates.length)];
}
function getRandomBitrate() {
const bitrates = [96, 128, 192, 256, 320];
return bitrates[Math.floor(Math.random() * bitrates.length)];
}
function getRandomDimensions() {
const widths = [800, 1024, 1280, 1920, 2560];
const heights = [600, 768, 720, 1080, 1440];
const i = Math.floor(Math.random() * widths.length);
return widths[i] + '×' + heights[i];
}
function getRandomWidth() {
const widths = [800, 1024, 1280, 1920, 2560];
return widths[Math.floor(Math.random() * widths.length)];
}
function getRandomHeight() {
const heights = [600, 768, 720, 1080, 1440];
return heights[Math.floor(Math.random() * heights.length)];
}
});
