Inspect · Browser-first processing

Compare Two Images Pixel by Pixel

Load original and revised images, align them to a common canvas and inspect visual changes.

Image Difference Checker workspace with local image preview
Image Difference CheckerProcessed on this device
or drop files here Selected files stay in this browser tab.

Preview and result

Local browser processing

Select a supported file or enter the requested values, then run the tool.


  




Closing or refreshing this page clears the selected files and generated result. Downloaded files are created as new copies and never overwrite the source.


Common questions
How this tool behaves
Does Image Difference Checker upload my image?
Image Difference Checker reads the selected input into browser memory and performs its documented operation on this device. It does not submit the source file to ImgNimble while using this browser-first workspace.
What does Image Difference Checker create?
A comparison preview, difference heat map and summary metrics.
What limitation should I check before using Image Difference Checker?
Different dimensions, compression noise and colour profiles can create differences that are not meaningful edits.
Practical checks
Before you use the output
A practical production task
Load original and revised images, align them to a common canvas and inspect visual changes.
Verify before replacing the original
Keep the source, download the Image Difference Checker result as a new file, and verify dimensions, transparency, colour, metadata and visual detail before replacing any production asset.


Continue the workflow
Related image tools
Blur and Sharpness Tester
Estimate edge strength with a browser-side Laplacian variance calculation and display an interpretable score.
Texture Tile Previewer
Repeat an image across a configurable canvas to reveal visible seams and pattern alignment problems.
PDF to Images
Render PDF pages to PNG or JPG locally with PDF.js and download selected pages in a ZIP.