Sukemaru: Verified Cutout PNG

Description

You removed the background — but the saved file still looks white.

Most of the time the transparency is fine. What went wrong is the file format, or simply how the Photos app previews transparent pixels. Sukemaru decodes the file it just wrote and measures the alpha channel, so you can tell the difference immediately.

■ Alpha Check — proof, not a promise

Sukemaru analyzes the exported PNG and reports whether an alpha channel exists, what percentage of pixels are fully transparent, and what the real file format is. A strict mode reads the asset back from your photo library after saving, so you can confirm before handing the file to another app.

■ Full-Size Lock — no quality loss

Your image is exported as a lossless PNG at exactly the pixel dimensions you imported. No downscaling, no re-encoding. The original pixel count stays visible on screen.

■ A loupe that shows what your finger covers

While erasing, the area hidden under your fingertip appears in a magnified window, with the brush footprint overlaid, so you can chase edges like hair and fabric precisely. Zoom up to 12×.

■ One-tap automatic cutout

On-device vision detects the subject and clears the background. Anything it misses can be fixed with the eraser and restore brushes.

■ Three export routes

Sukemaru ranks them by how reliably transparency survives.

■ Paid once. No ads, no nagging.

There are no in-app purchases, no advertising, and no review prompts. Everything is available from the moment you download it.

■ Nothing leaves your device

Cutout and verification run entirely on device. Your photos are never uploaded.

Good for

Available in English, German, Korean, Traditional Chinese, and Japanese.

Requires iOS 17 or later.