How to Remove Image Background Free Online
Remove image backgrounds and swap background colors with Koutuxia. Powered by the BiRefNet model, export transparent PNGs or red, blue, or white solid backgrounds in seconds — free to use.
No Photoshop, no software downloads, no skills needed. Drop an image and AI cuts the background out in seconds, handing you a transparent PNG. Here's the full guide.
Three Steps
Step 1 · Upload
Open Koutuxia, drag your image into the dashed box, or click to select. Supports JPG / PNG / WEBP up to 10 MB. You can also ⌘V paste a screenshot.
Step 2 · AI cuts it out
Processing starts immediately using BiRefNet, a top-tier model that captures even hair strands and fine edges. Usually done in 3-10 seconds.
Step 3 · Download PNG
You get a before/after comparison (the checkerboard means transparent). Hit Download — drop it straight into your design, slides, or product page.
When you'd use it
- ·E-commerce: cut products to transparent, swap to any background
- ·Portraits: swap a busy background for a clean solid color
- ·Stickers / avatars: cut out people or pets
- ·Design assets: cutout elements for posters, banners, slides
FAQ
Is it really free?
Free cutouts run locally in your browser with no image limit or sign-up. Upgrade only when you need Magic Eraser, cloud precision, 2× upscaling, or AI-generated backgrounds.
Which formats are supported?
JPG, PNG, WEBP, up to 10 MB each. Output is always a PNG with transparency.
Is it accurate? Can it handle hair?
It uses BiRefNet, first-tier on hair, fur, and semi-transparent edges. Note: text pasted onto the subject may be kept as foreground — a limitation shared by all background removers.
Are my images safe? Are they stored?
Free cutouts run locally and are not uploaded to our server. Pro cloud features use Replicate; inputs are deleted after the job, while some successful results are retained briefly in private storage for download. The provider also applies its own policy.
How does it compare to remove.bg?
Comparable quality. The real difference is access: remove.bg is often unreachable from mainland China without a VPN, while Koutuxia works over a direct connection — verified across China Telecom, Unicom and Mobile. The origin is hosted outside China, so it won't feel as instant as a locally-hosted site, but not needing a VPN is the point.