📸 Instagram Shortcode to ID Converter

// JavaScript - Instagram Shortcode to ID
function shortcodeToMediaId(shortcode) {
  const alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_';
  let mediaId = 0n;
  
  for (let i = 0; i < shortcode.length; i++) {
    const char = shortcode[i];
    const index = alphabet.indexOf(char);
    if (index === -1) throw new Error('Invalid shortcode');
    mediaId = mediaId * 64n + BigInt(index);
  }
  
  return mediaId.toString();
}

// Example usage
const mediaId = shortcodeToMediaId('CxOWiQNphlr');
console.log(mediaId); // 2792188468659568875

// Extract timestamp (Instagram uses Twitter's epoch)
const INSTAGRAM_EPOCH = 1288834974657n;
const timestamp = Number((BigInt(mediaId) >> 22n) + INSTAGRAM_EPOCH);
console.log(new Date(timestamp)); // Post creation date

# Python - Instagram Shortcode to ID
def shortcode_to_media_id(shortcode):
    alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_'
    media_id = 0
    
    for char in shortcode:
        index = alphabet.index(char)
        media_id = media_id * 64 + index
    
    return media_id

# Example usage
media_id = shortcode_to_media_id('CxOWiQNphlr')
print(media_id)  # 2792188468659568875

# Extract timestamp
from datetime import datetime
INSTAGRAM_EPOCH = 1288834974657
timestamp = ((media_id >> 22) + INSTAGRAM_EPOCH) / 1000
print(datetime.fromtimestamp(timestamp))  # Post creation date