JPG 转 PNG

JPG 转 PNG — 免费

Turn JPGs into lossless PNGs ready for editing, transparency and crisp graphics — converted securely on our server and deleted automatically afterward.

  • 无损 PNG 输出,编辑干净利落
  • 适合徽标、图形和屏幕截图
  • 免费 · 无需注册 · 文件自动删除

JPG / JPEG · 最大 50 MB

PNGJPGJPG → PNG

拖入 JPG 图片或点击浏览

热门用途

文件在处理后自动删除通过 HTTPS 安全处理

Frequently Asked Questions

PNG 是一种无损格式,更适合编辑、图层叠加、徽标、截图和打印,也被那些偏好 PNG 而非 JPG 的设计工具所接受。转换后你会得到一份干净的 PNG 副本,完整保留原图的每个像素并遵循 EXIF 方向。

usage

不会。转换只会改变文件格式,却无法凭空创造出 JPG 中原本不存在的透明度——背景仍是纯色。要获得透明背景,请使用抠图工具,它会抠出主体并导出透明的 PNG。

technical

是的——它免费、无需账号、不添加水印。文件在我们的安全服务器上处理,并在转换完成后自动删除。

pricing

可以。切换到批量模式,添加你所有的 JPG,它们会被一起转成 PNG,并打包为单个 ZIP 供下载。批量转换是高级版功能;单张 JPG 转 PNG 始终免费且无水印。

features

此工具输出的是 PNG 图片,而非文档。如果你想把一张或多张 JPG 转成可邮寄或打印的 PDF,请改用「图片转 PDF」工具 — 它能把多张图片合并为单个多页 PDF。

usage

No — and that is on purpose. PNG is a lossless format, so there is no quality slider to set: every pixel of your JPG is copied across exactly, with no extra compression added. The only trade-off is size — a PNG is usually larger than the JPG it came from. If you need a smaller file afterwards, run the PNG through the Image Compressor.

technical

How JPG to PNG helps you get it done

Real problems it solves every day — for businesses, creators, and everyday tasks. Find the use case that fits you and start in seconds.

For Developers

Layered Editing Without Recompression Loss

Convert a JPG source to PNG before opening it in Photoshop, GIMP or Affinity so every re-save during editing stays pixel-exact instead of re-introducing JPEG artifacts each time the file is saved.

Publishing

Print-Ready Artwork for Print Shops

Many print and direct-to-garment services reject compressed JPGs for logos and text-heavy artwork — converting to PNG keeps solid colours and thin lines free of JPEG banding before you upload to the print vendor.

For Business

批量转换整组拍摄以交付客户

Switch to Batch mode to convert a full folder of delivered JPGs to lossless PNG in one pass and download a single ZIP, instead of converting photographer or agency deliverables one file at a time.

For Creators

Text & Caption Overlays That Stay Crisp

Convert a JPG to PNG before adding bold captions, watermarks or callout text in a meme generator, social template or slide deck, since PNG has no compression to blur or halo sharp text edges the way re-saving a JPG does on every edit.