Why do images sometimes get corrupted and won’t open?

Images can get corrupted for a bunch of reasons—like problems during saving, file transfer interruptions, bad sectors on your storage device, or even software glitches. Sometimes, if the file header (which tells your computer how to read the image) gets damaged, the picture won’t open.
As for fixing them, there are a few tools you can try, depending on the image format:
For JPEGs: Tools like Stellar Repair for Photo, JPEG Repair Toolkit, or online services can sometimes recover parts of the image.
For PNGs: Tools are less common, but some image editors like GIMP or Photoshop might open a corrupted file partially.