Koutuxia
One click, clean cutout.
Drop an image. Get a transparent PNG in 5 seconds.
Your photo never uploads; the whole cutout runs in your own browser. Open the Network tab in DevTools and see for yourself.
Koutuxia is a free AI background remover powered by BiRefNet. Remove backgrounds in one click, export transparent PNGs, switch ID photo backgrounds to red, blue, or white, and process images in batches. Free removal runs inside your browser, so your images never leave your device.
How it works
- 1
Drop image
Portraits, products, animals, text — anything.
- 2
AI cuts it out
BiRefNet model, top-tier accuracy.
- 3
Download PNG
Transparent background, drop straight into your design.
Why Koutuxia
Fast inside China
Global CDN. No VPN required.
5-second turnaround
Top model on edge inference — 100× faster than manual.
Privacy first
Images are deleted after processing. No archive, no training.
Pricing
No sign-up, just drop & go
FAQ
Is Koutuxia free?
5/day for anonymous users, 20/day once signed in — all free. Upgrade to Pro (¥19/month) for unlimited.
What formats and sizes are supported?
JPG / PNG / WEBP, up to 10 MB each. Output is always a transparent PNG.
Is it accurate? Can it handle hair?
Top-tier BiRefNet model handles hair, fur, and semi-transparent edges. Switch between Fine and Fast modes.
Are my images safe? Are they stored?
Deleted after processing. No archive, no training. We only log the count for quota when signed in.
Can I batch process?
Yes. Drop multiple images and they queue up, one after another.
What else can it do besides background removal?
It also compresses images, resizes, converts formats (JPG / PNG / WEBP), and recolors backgrounds — all done locally in your browser, no upload.