Varyanz
Open Difference
All image comparison solutions

Pixel difference inspection

Turn almost invisible changes into evidence

Difference compares two aligned 2D sources pixel by pixel, then gives you the controls and measurements needed to separate real changes from noise.

Inspect image differences

No upload · No account · Files stay on your device

See the source, result, and reference together

The app keeps A and B beside the derived Difference result so a bright signal always has visual context.

DifferenceDirect · RGB · 4×
Source A
Source A stag beetle photograph for pixel comparison
Difference
Source B
Source B stag beetle photograph for pixel comparison
Illustrative direct-difference result from the same local comparison pair.

When Difference is the right method

Choose Difference when visual judgment alone is not enough and you need to locate or quantify changed pixels.

  • Render and export regression checks
  • Subtle retouching or cleanup verification
  • Alpha and edge discrepancies
  • Tolerance-based separation of signal and noise

What Difference actually provides

The controls match different inspection questions instead of treating every mismatch the same way.

  • Difference, subtract, add, multiply, and screen operations
  • RGB, luma, alpha, or maximum-channel metrics
  • Direct, heatmap, or mask display with gain and tolerance
  • Changed-pixel statistics plus a CSV report with settings and alignment

Start a Difference inspection

  1. Open Difference in Varyanz and choose two compatible 2D files.
  2. Align the sources, then select the operation, metric, and display that fit the check.
  3. Set gain or tolerance, review the statistics, and export a CSV report when needed.
Inspect image differences