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JPG to PNG
Convert a JPG image to lossless PNG with no upload.
Select an image
Click to choose, or drop a file here
Related PDF tools
PNG to JPGConvert a PNG to a smaller JPG — transparency is flattened onto white.JPG to WebPConvert a JPG to the smaller, modern WebP format.Compress ImageShrink a JPG, PNG or WebP to a smaller file — by quality or a target size.Resize ImageScale an image to a percentage or an exact pixel width, right in your browser.
JPG to PNG — frequently asked questions
Will converting JPG to PNG improve quality?+
No. PNG is lossless, so it won't add back detail the JPG already discarded — but it won't lose any more, which helps if you plan to edit further.
Why is the PNG bigger than the JPG?+
PNG stores every pixel exactly, with no lossy compression, so photos are typically 2–5× larger than the JPG.
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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