Tamper Heatmap
Create a compression-difference preview: we re-encode your image as JPEG and visualize pixel differences as a heatmap. Everything runs locally in your browser.
Important interpretation note
- The heatmap highlights compression artifacts and anomalies.
- It is not court-admissible proof of manipulation.
- Camera processing or export pipelines can also create similar patterns.
Sign up to use this tool
Free account required. Includes 3 free heatmap scans. No credit card required.
Image Tampering Checker (Online)
Looking for an online way to check edited photos? This tool helps with quick image forensics by highlighting compression anomalies. It is useful as a fast pre-check before deeper manual verification.
Best Practice
- Compare multiple JPEG quality levels (e.g., 75, 82, 90) instead of evaluating only one setting.
- Combine the heatmap with the EXIF Viewer to interpret camera, software, and export clues.
- Add Reverse Image Search to find earlier versions or re-uploads.
- For methodology and common misinterpretations, see Image Forensics Basics, EXIF Viewer Online Guide, and Reverse Image Search Guide.
Browser-first
No server upload. Processing stays local in your browser.
Difference analysis
Compares original vs. JPEG re-encode and highlights unusual compression changes.
Direct export
Download the heatmap as PNG for documentation.
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