Inspect · Browser-first processing
Analyse luminance edges locally and compare the score with a configurable practical threshold.
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
Blur and Sharpness Tester 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.
A sharpness score, classification and sampled edge preview.
There is no universal blur threshold. Noise, texture and image size affect the score, so compare similar images rather than treating it as certification.
Practical checks
Analyse luminance edges locally and compare the score with a configurable practical threshold.
Keep the source, download the Blur and Sharpness Tester result as a new file, and verify dimensions, transparency, colour, metadata and visual detail before replacing any production asset.
Continue the workflow
Compare two images with overlay, split and pixel-difference views plus a changed-pixel percentage.
Adjust brightness, contrast, saturation, grayscale, sepia, hue and optional scan-line glitch effects.
Sample exact pixel colours and extract a compact dominant palette from a local image.