Nearby tools from the catalog that fit the same job or workflow.
Make a color transparent
Pick a color in one image, remove it with tolerance and edge smoothing, and export a transparent PNG locally.
Inspect AVIF alpha
Inspect AVIF transparency, confirm alpha usage, and export the current alpha render as PNG.
Convert AVIF to PNG
Convert one AVIF into PNG locally and keep transparency when the source contains alpha.
Flatten PNG transparency
Replace transparency with a solid or gradient background and export a flat PNG for ready-made sharing.
Flatten WebP transparency
Replace WebP transparency with a solid or gradient background and export a flat WebP locally.
Inspect image details
Inspect image dimensions, file size, aspect ratio, transparency, and dominant colors directly in the browser.
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A quick way to understand who this helps, what it solves, and where it connects next.
People preparing PNGs, WebP graphics, stickers, overlays, and listing assets who need a clear answer about alpha support and visible transparency
Verifying whether transparency exists and how much of the image is opaque, transparent, or translucent
Capture transparency-checking intent with a diagnostic tool that is more specific than a generic image analyzer
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
To check if a PNG is transparent, add the image to the transparency checker and it inspects the alpha channel directly in your browser. It reports whether the image has transparency and how many pixels are fully opaque, fully transparent, or partially translucent.
A PNG can look transparent on one background and opaque on another, so the only reliable test is the alpha channel itself. The checker also renders a grayscale alpha mask, where white means opaque and black means transparent, so you can see exactly where the image is see-through.
Transparency depends on the file format. PNG, WebP, and GIF can carry transparency, while JPG cannot, since it has no alpha channel. If you load a JPG, the checker will report that the source format has no alpha support.
This makes the tool useful for confirming that a logo, icon, or cutout is truly transparent before you place it over a colored background or use it in a design, instead of discovering an unwanted white box later.
Yes. The image transparency checker is free with no sign-up, no watermark, and no usage limits.
It is private because the alpha analysis and preview happen locally in your browser. Your image is never uploaded to a server, so it stays on your device the whole time.
Short answers for the questions people usually have before trying a utility like this.
Add the PNG and the checker inspects its alpha channel, reports how many pixels are opaque, transparent, or translucent, and shows a grayscale alpha-mask preview for a clear answer.
No. JPG has no alpha channel, so the checker will report that the source format does not support transparency.
No. The alpha analysis and preview run entirely in your browser, so your image stays on your device.
Yes. It is completely free with no sign-up, no watermark, and no limit on how many images you check.
Yes. The checker works in any modern mobile or desktop browser because all analysis happens locally on your device.
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.
See whether the source image has an alpha channel, how many pixels are opaque or transparent, and preview the alpha mask locally in the browser.