JPEGsnoop for Windows

Overview of what you can find in a photo

Digital images contain a surprising amount of hidden data. JPEGsnoop digs into a JPEG file and exposes metadata and internal markers that are normally invisible. Much of that raw detail may be dull, but the program uses it to determine whether an image has been modified.

What the tool can uncover

• Detects which application likely edited the picture (if that information is present).
• Flags signs of retouching or other manipulations.

Quick steps to run an analysis

1. Click the "Open file" button in JPEGsnoop.
2. Pick the image you want to examine.
3. Wait a few moments while it scans the file.
4. Scroll to the end of the report to view the final assessment.

How results are presented

At the bottom of each report JPEGsnoop provides a verdict on whether the image appears altered. The program assigns a rating on a scale where lower numbers indicate a stronger likelihood of editing and higher numbers indicate uncertainty about whether the image is original. The full output includes exhaustive technical details, but the concluding classification is straightforward to read.

Practical notes and limitations

• Most photos undergo some form of compression, and routine edits (for color, exposure, or cropping) are common; that can make definitive "original" determinations difficult.
• Detailed reports are highly technical and not especially user-friendly, yet the summary conclusion is usually easy to understand.
• JPEGsnoop is a powerful investigative utility for anyone curious about a photo’s provenance, but keep in mind it is better at confirming tampering than proving absolute originality.

Alternative option

If you prefer a different utility, consider PixRecovery — a separate program available with a trial version for recovering and examining image files.