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.

スマート画像圧縮ツール

シンプル、高速、安全なオンライン画像圧縮

クリック、ドラッグまたは貼り付け

一次最多只能上传 10 张图片

詳細設定

圧縮モード

品質： 80%

コミュニティへの影響

300

処理された画像

600 MB

保存されたスペース

240 g

炭素排出削減量

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