Convert JPG to PNG
JPEG Image → Portable Network Graphics
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JPG → PNG
JPG
JPG (JPEG) is a lossy compressed image format, widely used for photographs and complex images on the web. It offers small file sizes but does not support transparency.
PNG
PNG is a lossless format that preserves every pixel perfectly. It supports transparency (alpha channel), making it ideal for logos, icons, and images that need to be overlaid on different backgrounds.
為甚麼需要轉換
Convert JPG to PNG when you need a transparent background, want to edit an image without quality loss across multiple saves, or need to overlay the image on a different background.
常見問題解答 (FAQ)
Will converting JPG to PNG improve quality?
No. Converting JPG to PNG cannot recover quality lost during JPG compression. However, it prevents further quality loss if you plan to edit and re-save the image multiple times.
Will the PNG file be larger than the JPG?
Yes, typically 2–5x larger, because PNG uses lossless compression and preserves all pixel data. This is the trade-off for higher quality.
Can I add transparency by converting to PNG?
Converting to PNG enables transparency support, but the actual transparent areas must be added with an image editor like Photoshop or GIMP after conversion.
Is there a limit to how many files I can convert?
No limits at all. You can convert as many files as you need, completely free.
What browsers support this tool?
All modern browsers — Chrome, Firefox, Safari, and Edge on both desktop and mobile devices.