Load the two states
Drop a before and after screenshot. Both images stay in your browser.
Browser-local visual QA
Compare before and after screenshots, measure the real visual change, and export proof a client can understand—without uploading confidential work.
Visual review without the guesswork
Useful after a redesign, a CMS update, a breakpoint fix, or the mysterious “small change” that touched half the page.
Drop a before and after screenshot. Both images stay in your browser.
Slide, overlay, blink, or isolate changed pixels with a tunable tolerance.
Export a clear comparison with dimensions, change bounds, and your note.
Both screenshots stay in this browser. Nothing is uploaded.
Pay once when it earns its place
The full comparison bench is free, including tolerance, alignment, heatmap, and metrics. Export one watermarked preview report up to 1600 px before deciding whether Studio belongs in your QA routine.
No account. No recurring charge. The unlock is stored on this device; if browser data is cleared, email us from the checkout address and we'll restore it.
Image decoding, comparison, metrics, and report rendering happen in your browser. Payment is the only step handled by an external provider.