iPhone can lift a subject from its background right inside the Photos app, but getting a real transparent PNG sometimes needs an extra step. This guide covers the built-in method, its limits, and a browser workflow that works on mobile.
On iOS 16 and later, the Photos app can separate a subject from its background using on-device machine learning. It works with people, animals, and objects in most well-lit photos:
The subject lift is impressively quick, but it has important limitations. It does not always save a standalone transparent PNG file — the cutout often pastes onto a white background when dropped into other apps, and behavior varies between Messages (usually white background), Notes (sometimes preserves transparency), and third-party editors (unpredictable). There is no built-in way to export the lift as a PNG file directly to your camera roll or Files app. If you need a reliable transparent file that you can reuse across apps and devices, the subject lift alone is not enough — you need a tool that explicitly exports a transparent PNG.
BG-Zero runs in the mobile browser, so you get a proper transparent PNG on iPhone with no app install:
After removal, always export as PNG to preserve transparency — JPEG does not support transparent backgrounds and will fill the cutout area with white. Use the share sheet (the square-with-arrow icon) to save to Photos for quick access, or save to the Files app if you want to organize the file in folders and sync across iCloud. PNG is the safest format for a transparent cutout you will reuse in design tools, presentations, or web projects. The file will appear in your camera roll with the checkerboard pattern replaced by black in the Photos app thumbnail, but the transparency data is preserved in the file itself.
The built-in subject lift runs entirely on-device using the iPhone's Neural Engine, so your photo never leaves your phone. BG-Zero also processes locally in your browser using WebAssembly and WebGPU — your photo is not uploaded to any server. This is especially important for personal photos, ID documents, medical images, or any content you would rather keep private. Both methods are fully offline-capable once the web app is loaded. Avoid apps or websites that ask you to upload photos to 'the cloud' for background removal — you lose control of where your image goes and who can access it.
The built-in subject lift is impressive for a free, built-in feature, but it has clear limitations you should know about. It only works on iOS 16 and later, so older iPhones (iPhone 8, iPhone X, and earlier models that cannot update) do not have this feature at all. It often struggles with complex subjects — multiple people overlapping, objects with intricate edges like bicycles, and images where the subject blends into a similarly colored background. There is no manual refinement tool within Photos, so if the automatic detection is slightly off, you cannot fix it without another app. And as mentioned, there is no direct PNG export — the lift is designed for quick sharing and pasting, not for producing clean, reusable transparent image files. For professional or repeated use, a dedicated tool like BG-Zero fills these gaps.
The App Store has dozens of background removal apps, but they come with trade-offs. Most free apps add watermarks, limit resolution, or require a subscription to export at full quality. Some upload your photos to their servers for processing, which raises privacy concerns. Popular options like Background Eraser, Magic Eraser, and PhotoRoom offer varying levels of quality but typically charge $5-10/month for full features. By contrast, browser-based tools like BG-Zero are completely free, process locally on-device, and export at full resolution with no watermarks. The web app approach gives you the same result without the storage space, subscription cost, or privacy concerns of a native app.
If you use Android or need to help someone who does, the background removal landscape is slightly different. Android does not have a built-in subject lift like iOS. Google Photos has a 'Magic Eraser' feature on Pixel phones and Google One subscribers, but it is designed for removing small objects, not full backgrounds. For Android users, the best approach is the same as the fallback for iPhone: use BG-Zero or a similar browser-based tool that works identically on both platforms. The web-based approach is platform-agnostic — it works on Android, iOS, Windows, Mac, and Linux with the same quality and features. This is worth keeping in mind if you need a consistent workflow across devices or are creating instructions for a team with mixed devices.
Native apps and mobile browser tools each have strengths. Native apps can access deeper hardware integration — GPU acceleration, haptic feedback, and system-level file management — which can make the experience feel snappier. But they take up storage space, require updates, and often push subscriptions. Browser-based tools like BG-Zero load instantly, take zero storage, update automatically, and with modern WebAssembly and WebGPU APIs can match native processing speed. The browser does not need camera, microphone, or contact permissions — just access to the photos you choose to upload. For background removal specifically, the browser approach is now competitive with native apps in both speed and quality, while being more transparent about privacy and costing nothing.
In the Photos app, touch and hold the subject to lift it from the background, then copy or share it. This works on iOS 16 and later.
The built-in subject lift does not always save a transparent file. BG-Zero runs in the mobile browser and exports a proper transparent PNG.
The built-in feature runs on-device. BG-Zero also runs locally in your browser, so your photo is not uploaded to a server.
For quick cutouts, the Photos subject lift is convenient. For control over export format, background color, and edge cleanup, use BG-Zero in the browser.
Related tools and guides:
Works in your iPhone browser and exports a transparent PNG.
Open the AI background remover