All tools
Compress Image
Shrink a JPG, PNG or WebP to a smaller file — by quality or a target size.
Select an image
Click to choose, or drop a file here
Related PDF tools
Resize ImageScale an image to a percentage or an exact pixel width, right in your browser.JPG to WebPConvert a JPG to the smaller, modern WebP format.PNG to WebPConvert a PNG to WebP for a much smaller file with transparency intact.HEIC to JPGConvert iPhone HEIC/HEIF photos to standard JPG — decoded on your device.
Compress Image — frequently asked questions
Does compressing an image lose quality?+
JPEG and WebP compression is lossy, so there is some quality loss — but at 60–80% quality it is usually invisible while the file shrinks a lot. PNG stays lossless.
Can I compress to an exact file size?+
Yes. Enter a target in KB and the tool binary-searches the quality (and downscales if needed) to land at or just under it.
Is my image uploaded?+
No. The image is decoded and re-encoded with a <canvas> in your browser. It never leaves your device.
What formats are supported?+
JPG, PNG, WebP, plus HEIC/HEIF and TIFF as input.
你們會把我的檔案上傳到伺服器嗎？+
不會——這裡的每個工具都完全在你的裝置上處理檔案，不會向伺服器上傳任何內容。唯一的例外是 AI 工具，它們會把擷取的文字（而非檔案本身）傳送給 Claude 來完成工作。
有檔案大小限制嗎？+
我們沒有人為設下限制，但由於處理過程在你的瀏覽器中進行，非常大的檔案（超過 500MB 或 1000 頁）會受你裝置記憶體的限制，而非我們的限制。
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