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Convert PNG to JPG

瞬间把 PNG 文件转换成 JPG。

快速解答

To convert PNG to JPG, upload your PNG file to ezimagetools.com and press Convert — the JPG comes back in a few seconds. A photograph saved as PNG is often several times larger than it needs to be, because PNG stores every pixel exactly whether or not anyone could tell. Some, yes. It is free, needs no account, and your upload is deleted within an hour.

概览

支持的格式
PNG files (any variant)
输出结果
A standard JPG at the same width and height
单个文件上限
每个文件 50 MB
每批文件数
一次最多 20 个
价格
免费,处理数量不限
是否需要账号
不需要,无需注册
文件删除时间
处理后一小时内自动删除

更新于 2026-08-31

如何png 转 jpg

  1. Add your PNG files

    Tap the upload box and pick the PNG images you want to convert, or drag them in.

  2. Check the output format

    JPG is already selected. You can switch it if you change your mind.

  3. Press Convert

    Each file is re-encoded as JPG. A batch of twenty takes a few seconds.

  4. Download

    Save the JPG files to your device. A batch comes back as one ZIP.

About PNG

PNG stores every pixel exactly as it was and is the common format that supports transparency. That makes it the right choice for screenshots, logos and flat graphics, and a wasteful one for photographs.

Why JPG instead

JPG opens in every browser, every phone gallery, every office program and every upload form there is. When a website rejects your image, JPG is almost always what it wanted instead.

常见问题

Why convert PNG to JPG?

A photograph saved as PNG is often several times larger than it needs to be, because PNG stores every pixel exactly whether or not anyone could tell. Converting that photo usually cuts the size by 80% or more with no visible difference. JPG opens in every browser, every phone gallery, every office program and every upload form there is. When a website rejects your image, JPG is almost always what it wanted instead.

Will I lose quality converting PNG to JPG?

Some, yes. PNG stores every pixel exactly and JPG does not, so the encoder discards the detail it judges least visible. On a photograph the difference is not something you can see at normal size, but it is a one-way trip — keep the PNG if you might need to edit the picture again.

What happens to transparency when I convert PNG to JPG?

Transparent areas are filled with white, because JPG has no way to store them. If the transparency matters — a logo that has to sit on a coloured background, for instance — convert to PNG or WEBP instead, both of which keep it.

What is a PNG file?

PNG stores every pixel exactly as it was and is the common format that supports transparency. That makes it the right choice for screenshots, logos and flat graphics, and a wasteful one for photographs.

Does converting change the size or dimensions of the picture?

The width and height in pixels stay exactly the same — only the way those pixels are stored changes, which is what changes the file size. Expect the JPG to be smaller than the PNG in most cases. Use the Resize tool if you want to change the dimensions too.

Is it safe to convert PNG files online?

Yes. Your file is processed on our server and deleted automatically within one hour. We never look at it, never share it, and never use it to train anything. There is no account to create.

Your images are processed on our server and deleted automatically within one hour. We never look at them and you do not need an account.