image diff tool macOSWindows

Find image changes from several visual angles

Compare images locally with overlay, swipe, blink, heatmap, changed-pixel masks, true-pixel zoom, thresholds, dimension alignment, and error metrics.

Direct answer

Which views are available for image comparison?

Diff Anything provides side-by-side, overlay, swipe, blink, heatmap, and changed-pixel views. It aligns dimension changes on a shared canvas and reports changed pixels, similarity, error measurements, maximum channel change, and the bounds of the changed area.

Accuracy note: reviewed against Diff Anything 1.2 on .

Diff Anything image heatmap with changed-pixel, similarity, dimension, and error measurements
Heatmap exposes the changed region while dimensions, threshold, and exact measurements stay visible.

Best for

Where this workflow fits.

  • Reviewing UI captures and generated graphics between builds
  • Finding subtle pixel changes that are hard to spot side by side
  • Comparing private or unreleased artwork without an upload

No accounts, cloud comparison service, analytics, or telemetry.

Relevant capabilities

What Diff Anything brings to the job.

Practical workflow

From setup to a reviewed result.

  1. Open both images

    Choose two local image files; orientation-aware decoding prepares them for the same pixel coordinate system.

  2. Choose a visual view

    Start side by side, then use overlay, swipe, blink, heatmap, or changed pixels for the question at hand.

  3. Tune the inspection

    Use fit or true-pixel zoom, the transparency grid, and a 0–255 threshold to separate meaningful changes from tiny channel variation.

  4. Read the measurements

    Review changed pixels, similarity, mean and RMS error, maximum channel delta, dimensions, and changed bounds.

Useful in practice

Related searches

One workflow, several common names.

This page focuses on image diff tool. People also describe the same or closely related job as image comparison tool, pixel diff, visual regression image compare, compare two images.

image comparison toolpixel diffvisual regression image comparecompare two images

Direct answers

Questions about image diff tool.

Which views are available for image comparison?

Diff Anything provides side-by-side, overlay, swipe, blink, heatmap, and changed-pixel views. It aligns dimension changes on a shared canvas and reports changed pixels, similarity, error measurements, maximum channel change, and the bounds of the changed area.

Which image-diff views are available?

Side by side, overlay, swipe, blink, heatmap, and changed-pixel views are available in the same workspace.

Can Diff Anything compare images with different dimensions?

Yes. It aligns them at the top left on a shared transparent canvas, so the added or missing area remains part of the pixel comparison.

What image-diff measurements are reported?

The workspace reports changed-pixel count and ratio, similarity, mean error, root-mean-square error, maximum channel delta, source dimensions, and the bounds of the changed area.

Are the images uploaded?

No. Image decoding, visual views, thresholds, and measurements run locally in Diff Anything.

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Review release trees, archives, documents, and visual assets with purpose-built navigation, safety checks, and rollback.

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