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A quick way to understand who this helps, what it solves, and where it connects next.
Designers, QA, marketplace teams, and developers checking transparency, masks, or suspicious edge artifacts inside PNG assets
Debugging channel data from a PNG without opening a heavier editor just to inspect alpha or color separation
Capture PNG channel-inspection intent with a simple browser-first utility that connects to alpha and palette workflows
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
To inspect a PNG's channels, load it into the channel viewer and switch between views: the full RGB image, each individual red, green, and blue channel, the alpha channel, and an alpha-mask render. Each view isolates one part of the image so problems that are invisible in the normal preview become obvious.
The viewer renders these channel views for inspection and optional export, but the source file is never altered. If you need a specific channel as an image, you can export the current render as a new PNG.
All channel rendering and export run in your browser, so the PNG stays on your device and nothing is sent to a server.
PNG channel views help when something feels wrong but the asset looks normal at first glance. Alpha contamination, leftover masks, and odd edge transitions often show up only in a channel-specific view rather than the composited image.
The alpha-mask view is especially handy: it turns opacity into a hard black-and-white mask so transparent and visible regions are easy to read quickly. That makes it simple to confirm whether a cutout is clean or carries stray semi-transparent pixels.
Short answers for the questions people usually have before trying a utility like this.
Yes. This PNG channel viewer is free and runs entirely in your browser with no account needed.
No. It renders channel views for inspection and optional export, but the source file stays untouched.
The alpha-mask view turns opacity into a hard visible mask so transparent and visible regions are easier to read at a glance.
No. Channel rendering and export happen in your browser, so the PNG is never uploaded and stays on your device.
Yes. The channel viewer runs in any modern browser, including mobile, since all processing is done locally.
Every tool on Cleanor is free with no sign-up, no credits, and no limits. Files are processed privately in your browser. Looking for on-device phone cleanup and Premium features? That lives in the Cleanor app.
Render red, green, blue, alpha, or hard alpha-mask views locally and export the currently selected channel as PNG.