Compress Image
Compress JPG, PNG, and WebP images for free. Private, browser-based image compressor with quality control — no uploads.
ファイルをアップロード
Drag and drop files here, or click to browse
Processed entirely in your browser. Your images never leave your device.
このツールについて
Compress Image reduces the file size of your images by re-encoding them as efficient JPG or WebP at a quality level you choose. See exactly how much you saved before downloading.
Compression runs entirely in your browser — your images are never uploaded, and there are no limits or watermarks.
使い方
Upload an Image
Drag and drop a PNG, JPG, or WebP image, or click to select it.
Choose Quality
Pick an output format (WebP or JPG) and drag the quality slider.
Download
Review the size saved and download your compressed image.
活用シーン
Email Attachments
Shrink images to fit attachment size limits.
Faster Pages
Reduce image weight to speed up your website.
Storage Savings
Compress image libraries to save disk and cloud space.
よくある質問
How much smaller will my image be?
It depends on the image and quality setting — WebP at 70% often cuts size by half or more.
Which format compresses best?
WebP usually produces the smallest files at a given quality.
Are my images uploaded?
No. All compression is done locally in your browser.