Image Caching

md2wp uses SHA-256 hashing to cache uploaded images and prevent duplicates.

How It Works

1. Hash file - Generate SHA-256 hash of image content
2. Check cache - Look up hash in .md2wp/cache.json
3. If found - Verify media exists in WordPress, reuse
4. If not - Upload to WordPress, add to cache

Cache Location

Cache is stored in .md2wp/cache.json:

{
  "images": {
    "a1b2c3d4...": {
      "mediaId": 123,
      "url": "https://site.com/.../image.jpg",
      "uploadedAt": "2024-01-15T10:30:00Z"
    }
  }
}

Benefits

• 🚀 Faster - No re-upload of existing images
• 💾 Storage - Prevents duplicates in WordPress
• ✅ Reliable - Verifies media still exists

Clearing Cache

rm -rf .md2wp/cache.json

Next Steps

• Working with Images →
• Publishing Guide →