Fix "Invalid Marker Type" in Photoshop (2026)
Photoshop won't open your JPG? It says "unknown or invalid JPEG marker type"? Here is the instant fix.
1
The Corrupt Header
This error occurs when a file has a JPG extension but the metadata header is corrupt or non-standard (common with WhatsApp images).
2
The Fix
Run the image through our **Converter** (JPG to JPG). This rewrites the file header from scratch, making it compliant with Adobe's strict standards.
3
Screenshot Method
If conversion fails, open the image in a web browser and take a screenshot. This bypasses the corrupt data entirely.