DJAI Academy 使用免費工具
DJTool by DJAI

免費 JPG、PNG、WEBP 與 HEIC 圖片工具

圖片去背，免費在瀏覽器中處理

圖片去背，不必註冊、沒有浮水印，圖片會留在你的裝置上，不會上傳到 DJAI 伺服器。

✓ 不必註冊 ✓ 瀏覽器內處理 ✓ 免費使用
Remove a background
BACKGROUND REMOVER

Cut out the subject. Keep a transparent PNG.

Choose one image or a batch. The AI model runs on your own device and returns a PNG with a transparent background.

DJAI Image ToolsJPG, PNG, WebP & HEIC
私密且在裝置端處理

🔒 圖片不會離開瀏覽器。DJAI 不會上傳、儲存或查看你的檔案。

WHAT THIS TOOL DOES

Remove JPG, PNG or WebP backgrounds and get a transparent PNG

DJAI 去背 Remover is a free online tool that deletes the background from a photo and gives you back a PNG with a transparent background. It works on JPG, PNG, WebP, HEIC, and HEIF files, including photos taken straight from an iPhone. JPG cannot store transparency, so JPG inputs are exported as transparent PNG files. There is no signup, no watermark, and no monthly quota, and you can process up to 20 images in one batch and download them together as a ZIP.

It runs in your browser, not on our servers. The first time you use it, your browser downloads a one-time AI segmentation model of about 18 MB from djai.academy; after that it is cached and starts instantly. The model then does all of the work on your own device, so your photo is never uploaded, stored, or seen by us. A typical image takes a few seconds. The model is U²-Net (Apache-2.0 licensed), run through ONNX Runtime, and it produces a soft alpha edge, so hair and fur keep natural detail instead of a hard cutout line.

工具說明

如何使用圖片去背工具

選擇裝置中的圖片，確認格式、尺寸或畫質設定，在瀏覽器完成處理後檢查實際輸出再下載。

  1. 從裝置選擇圖片
  2. 調整格式、尺寸或畫質
  3. 處理、檢查並下載結果
使用方式

From photo to transparent PNG in three steps.

01

選擇圖片

Upload a JPG, PNG, WebP, HEIC, or HEIF file directly from your device.

02

Let the AI find the subject

The segmentation model runs inside your browser. Nothing is uploaded.

03

Download the transparent PNG

Review the cutout and save a PNG that keeps its transparency.

PRIVATE BY DESIGN

Your pictures stay yours.

The complete background-removal process happens on your device. The AI model is downloaded to your browser once and runs there; the image is never sent anywhere.

✓ Local browser processing ✓ Automatic metadata removal ✓ Analytics receives no filenames or image contents
常用圖片工具

Choose a common conversion, compression, or resize workflow. Every page uses the same private browser-based processing engine.

Remove backgroundDownload transparent PNG JPG to PNGFree conversion PNG to JPGQuality control JPG to WebPFor faster websites WebP to JPGWider compatibility Image to 100 KBFor upload forms HEIC to JPGiPhone photos AVIF to JPGWider compatibility Image to 200 KBPreconfigured target Passport photo35x45 and 2x2 inch
FAQ

Questions about removing backgrounds.

Is removing the background really free?

Yes. There is no signup, no watermark, and no monthly quota. You can process up to 20 images per batch, as many batches as you like.

What file do I get back?

A PNG with a transparent background, so it keeps its transparency in design tools, slide decks, and online stores. JPG cannot store transparency, so a JPG input is also returned as a transparent PNG.

Are my images uploaded?

No. The AI model runs inside your browser, so the image never leaves your device.

Does it handle hair and fine edges?

Yes. The model produces a soft alpha edge rather than a hard cutout, which keeps hair and fur looking natural.

Can I remove backgrounds from several images at once?

Yes. Add a batch and download every transparent PNG together in a single ZIP.

Which formats can I upload?

JPG, PNG, WebP, HEIC, and HEIF, including photos straight from an iPhone.

How long does it take?

A few seconds per image once the model is loaded. The first run also downloads a one-time model of about 18 MB, so it takes longer depending on your connection.

Does it work offline?

處理後 the first run the model is cached in your browser, so background removal keeps working without a connection.

Can I use the results commercially?

Yes. The images you process are yours, and the tool adds no watermark and claims no rights over your files.

需要時隨時使用。

Remove your first background for free.

Open the background remover →
DJAI ECOSYSTEM

Free tools connected to real builders.

DJAI Academy publishes practical tools for creators, founders, hospitality teams, and community builders across the Siamese Cat ecosystem.

Develop With DJAI Custom web tools, automation, apps, and AI-powered platforms. Siamese Cat Creative Club Creative workflows, social content, and visual production. Siamese Cat Cafe The community cafe and real-world brand behind the group.