JPEG Medic // Accurate Manual JPEG Recovery
Table of Contents
  1. Overview
  2. Theory of JPEG Repair
    1. JPEG structure
    2. How to fix broken JPEG file
  3. Working with the Program
    1. Main menu
    2. Virtual folder tree
    3. Files panel
    4. Preview panel
    5. Cluster view
    6. Hex view
  4. Repairing JPEG image
    1. Opening JPEG file
    2. Repair window
      1. Menu commands
    3. Repair procedure
      1. Visual analysis and localization of damaged MCUs
      2. Finding the next correct MCU
      3. Deleting damaged MCUs
      4. Inserting empty MCUs
      5. Color correction
        1. Automatic color correction
        2. Manual color correction
      6. Filling empty MCUs with data
        1. Use the thumbnail image to fill the empty MCUs
        2. Auto-generate missing content
    4. Saving repaired JPEG image
    5. Repairing fragmented JPEG file
    6. Repairing damaged JPEG image based on SOS marker
    7. Repairing JPEG file encoded by ransomware

Repair procedure

Repairing should be done starting from the topmost and leftmost blocks, top to down and left to right, because changing early blocks impacts all the following blocks too.

Overall, the repairing procedure consists of these steps: