DJAI Academy 使用免费工具
DJTool by DJAI

免费 JPG、PNG、WEBP 与 HEIC 图片工具

35×45 毫米证件照尺寸调整，免费在浏览器中处理

35×45 毫米证件照尺寸调整，无需注册、不加水印，图片保留在你的设备上，不会上传到 DJAI 服务器。

✓ 无需注册 ✓ 浏览器内处理 ✓ 免费使用
处理图片
图片工具

缩小文件，同时保留实用画质。

Choose one image or a batch and select the output you need. Everything happens locally on your device.

DJAI Image ToolsJPG, PNG, WebP & HEIC
私密且在设备端处理

🔒 图片不会离开浏览器。DJAI 不会上传、存储或查看你的文件。

工具说明

如何使用35×45 毫米证件照尺寸调整工具

选择设备中的图片，确认格式、尺寸或画质设置，在浏览器完成处理后检查实际输出再下载。

  1. 从设备选择图片
  2. 调整格式、尺寸或画质
  3. 处理、检查并下载结果
使用方法

三个步骤完成图片处理。

01

选择图片

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

02

Pick a resize method

Set a target KB, use a percentage, or enter exact dimensions.

03

Download the result

Preview the new file size and save the optimized image instantly.

PRIVATE BY DESIGN

Your pictures stay yours.

The complete resize process happens on your device using modern browser technology. There is no upload queue, server storage, or account database.

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

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

图片处理常见问题

Can the tool make an image exactly 100 KB?

The compressor aims for the selected size or slightly below it. The final size can vary by a few KB because every image compresses differently.

Will my PNG transparency be preserved?

Yes, when the output format is PNG or WebP. Converting a transparent image to JPG adds a white background because JPG does not support transparency.

Does reducing the file size reduce image quality?

Target-KB compression may lower quality or dimensions. 百分比 and dimension modes let you control the image size directly while using a high-quality export.

Are my images uploaded to DJAI?

No. The tool works locally in your browser and does not send the image to DJAI or Siamese Cat Dev.

Can this remove image backgrounds?

Yes. 去除背景 mode uses browser-based AI segmentation and exports a transparent PNG for product photos, profile images, and social media assets.

需要时随时使用。

免费处理第一张图片。

打开图片工具 →
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.