Koutuxia
Start cutout

Koutuxia

iOS App
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·

KoutuxiaOne click, clean cutout.

Drop image here
or click to select
JPG / PNG / WEBP · up to 10 MB
Or ⌘V to paste a screenshot
On-device · Unlimited · Images never leave your browser

Koutuxia is a free AI background remover powered by BiRefNet. Remove backgrounds in one click, export transparent PNGs, swap the background for any solid color, and process images in batches. Free cutouts run inside your browser, so those images never leave your device.

All tools

Image Studio V2.1
One resumable workflow for cleanup, cutout, and export
Remove background
Local cutout with transparent PNG export
Magic eraser
Brush over people or clutter to remove them
Unblur photo
Rebuild detail in blurry or low-res photos
Automatic text repair
Replace typos with automatic font, paper, angle, and ink matching
Compress image
Local compression, smaller, no upload
Resize image
Adjust width/height, ratio or custom
Convert format
JPG / PNG / WEBP interconvert

How it works

  1. 1

    Drop image

    Portraits, products, animals, text — anything.

  2. 2

    AI cuts it out

    BiRefNet model, top-tier accuracy.

  3. 3

    Download PNG

    Transparent background, drop straight into your design.

Why Koutuxia

Works inside China

Reachable over a direct connection. No VPN required.

Detailed edges

BiRefNet Lite handles hair, fur, and semi-transparent edges.

Privacy first

Free images stay in your browser; some cloud results are retained briefly in private storage for download.

Guides & Use Cases

Remove image background online→Portrait background color→Product photo white background→Avatar & sticker cutout→Logo transparent background→Pure white photo background→Transparent WeChat avatar→Unblur a photo→

FAQ

Is Koutuxia free?

Free cutouts run locally in your browser with no image limit or sign-up. Upgrade only when you need Magic Eraser, photo unblur, cloud precision, 2× upscaling, or AI-generated backgrounds.

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?

The free local engine uses BiRefNet Lite for hair, fur, and semi-transparent edges. Pro cloud processing adds Fine and Fast model choices.

Are my images safe? Are they stored?

Free cutouts run locally and are not uploaded to our server. Pro cloud features send images to 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.

Does Pro have usage limits?

Pro cloud AI uses a high fair-use quota: soft limits are 100 calls per 24 hours and 300 per 30 days to prevent abuse and control third-party compute costs. Free local cutouts are unaffected.

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.

Pricing

Free local
Unlimited

In-browser BiRefNet Lite · not uploaded to our server

Sign-in
Free account

Buy and manage Pro; local cutouts remain unlimited

Sign up
Pro
¥19 / month

Cloud precision · Magic eraser · Photo unblur · 2× upscale · AI backgrounds · 100/24h and 300/30 days

Upgrade →
See full comparison →

Also on iPhone

Koutuxia is on the App Store: on-device cutouts, one-tap background color, saved straight to Photos, offline.

See the iOS app →