How does ImgMin compress images without losing quality?

ImgMin uses the browser's native Canvas API to intelligently compress images. It analyzes each image and applies optimal compression settings based on your chosen mode (Balanced, Best Quality, or Smallest Size). All processing happens directly in your browser — no server upload required.

Is it safe to compress images with ImgMin?

Yes, ImgMin is completely safe. Unlike most online compression tools, ImgMin processes images entirely on your device using client-side JavaScript. Your images never leave your browser and are never uploaded to any server. This makes it GDPR-compliant by design.

What image formats does ImgMin support?

ImgMin supports JPG/JPEG, PNG, and WebP formats. You can compress up to 20 images at once using the batch upload feature, and download them individually or as a ZIP file.

Can I use ImgMin offline?

Yes, ImgMin is a Progressive Web App (PWA) that works offline. Since all image compression happens in your browser without server communication, you can compress images even without an internet connection after your first visit.

ImgMin - Smart Image Compressor

ImgMin is a free, privacy-first online image compression tool. Compress JPG, PNG, and WebP images directly in your browser — no upload required. All processing happens client-side for maximum privacy and security.

Please enable JavaScript to use ImgMin.

智能图片压缩工具

简单、快速、安全的在线图片压缩服务

点击、拖拽或粘贴图片到这里

一次最多只能上传 10 张图片

高级设置

压缩模式

压缩质量： 80%

ImgMin 累计贡献

300

累计处理图片

600 MB

累计节省空间

240 g

减少碳排放

Your images never leave your browser — zero upload, verified.