背景透過がここまで簡単とは
背景透過が必要なときにすごく便利でした。PNG画像の確認も簡単で、SNS用の画像やサムネイル作成で重宝しています。操作がシンプルなので、画像編集に慣れていない人でもすぐ使えると思います。
すげー！
端末上で免許証とか提出する時、使ってます。撮った写真選ぶと、速攻で不要な背景消してくれる。
結構ごちゃごちゃした写真も一発だから、便利。
結構ごちゃごちゃした写真も一発だから、便利。
$1.00
About
This app verifies and preserves transparency in PNG files after background removal. It ensures full-size, lossless exports and offers precise editing tools. Your creations remain private, processed entirely on your device.
✓Alpha channel verification
✓Full-size lossless PNG export
✓Magnified editing loupe
✓One-tap automatic cutout
✓Multiple export options
✓On-device processing
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What's New in Sukemaru
1.3
September 2, 2026
• You can now place the cutout on a background when exporting: keep it transparent, or use white, black, or a photo of your own. The background is never distorted — it is scaled to the shorter side and centred. • When you export transparent, the app still reads the file back and measures the alpha, as before.
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FAQ
What is Sukemaru's main purpose?
Sukemaru's main purpose is to verify and preserve the transparency of PNG files after you've removed a background. It helps ensure that the transparency you expect is actually present in the saved file, preventing common issues where transparent areas appear white.
Does Sukemaru have ads?
No, Sukemaru is ad-free. The app explicitly states there are no advertisements, no in-app purchases, and no review prompts, offering a clean user experience.
How does Sukemaru handle image quality?
Sukemaru exports your images as lossless PNGs at their original pixel dimensions. This means there is no downscaling or re-encoding, preserving the full quality and pixel count of your original image.
Is Sukemaru available on Android?
Based on the provided information, Sukemaru requires iOS 17 or later and is available on iPhone and iPad. There is no mention of Android availability.
How often is Sukemaru updated?
Sukemaru was last updated on August 9, 2026, with version 1.1.2. This indicates a recent update, suggesting ongoing development and support.
What languages does Sukemaru support?
Sukemaru is available in English, German, Korean, Traditional Chinese, and Japanese. This broad language support makes it accessible to a global user base.
Can I use Sukemaru offline?
Yes, Sukemaru processes cutouts and verification entirely on your device. This means all operations run locally, and your photos are never uploaded, allowing for offline use.
What is the price of Sukemaru?
Sukemaru is a paid app priced at $1.00. The app states it is 'Paid once. No ads, no nagging,' meaning this is a one-time purchase for full access.