Forensics Toolset

ELA re-saves the image as JPEG and measures per-pixel differences. Areas that were edited or composited often show higher error levels than undisturbed regions.

Does not indicate editing: Text, sharp edges, highly-textured regions (fabric, foliage), and repeated saves at the same quality all produce high ELA values naturally.

ELA is one indicator among many and should never be used in isolation.

Identifies copy-move forgery by finding visually similar regions at different positions. Matched blocks are highlighted with colour-coded overlays.

Limitations: Smooth areas (sky, walls, solid colours) may produce false positives at higher sensitivity. Does not detect AI inpainting or content-aware fill. Start with Low sensitivity.

Re-encodes the image through the browser canvas, which strips all embedded metadata. Optionally re-injects a limited set of fields after stripping.

Detects compression artifacts and noise patterns by comparing each pixel to the local median. High residuals indicate noisy regions, compression artifacts, or edited areas.

How it works: A 3×3 median filter is applied to every pixel. The difference between the pixel and the local median is the residual. Higher residuals suggest noise, compression, or manipulation.

Interpretation: Smooth regions (sky, walls) have low residuals. Textured regions (fabric, foliage, hair) naturally have higher residuals. Compression and editing also increase residuals in affected areas.

Draw light vectors on the image to verify shadow consistency. Inconsistent shadow direction or length can indicate compositing or manipulation.

How to use: Click and drag on the image to draw arrows representing light sources or shadows. The angle and distance of each vector are measured and displayed in the vector list.

What to look for: All shadows in a scene should point in the same direction and have similar proportions relative to the objects casting them. Disagreement suggests multiple light sources or doctoring.

Compiles findings from all completed analyses into a printable document. Use your browser's Print → Save as PDF to export.

Disclaimer: This is an automated analysis to assist human review. Findings are indicators only and must be interpreted by a qualified analyst.