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转变 JPEG 至 PNG

转换你的 JPEG 至 PNG 毫不费力地记录文件

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如何转换 JPEG 至 PNG

第一步:上传您的 JPEG 使用上方按钮或拖放方式上传文件。

步骤 2:点击“转换”按钮开始转换。

步骤 3:下载转换后的文件。 PNG 档案


JPEG 至 PNG 转换常见问题解答

How do I convert a JPEG image to PNG?
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Drop your JPEG image into the upload area. PDF.to re-encodes the pixels into the PNG container and gives you the new file in seconds. No account is needed.
If PNG is a lossless format (PNG, BMP, TIFF), pixel data is preserved exactly. If PNG is lossy (JPG, WebP, JPEG), we use a high default quality setting that is visually indistinguishable from the source for almost all images.
When PNG supports an alpha channel (PNG, WebP, GIF) and the original JPEG had transparency, we keep it. Converting to a format without transparency (JPG, BMP) fills transparent areas with white by default.
ICC color profiles and DPI tags are preserved when PNG supports them. EXIF metadata (camera, GPS, timestamps) is stripped by default for privacy; turn it on in PRO if you need it.
是。 矢量到光栅转换在合理的默认分辨率( 通常为 2x 显示); 您可以在选项面板上覆盖 DPI 。 鼠标到矢量是最佳的追踪工具, 并且对标识和线条艺术, 而不是照片最有效 。
Free accounts allow images up to the free size limit. PRO accounts allow much larger images and up to 1 gigapixel per image, which covers large scans and panoramas.
Yes — drag a folder of JPEG files onto the page. Each is converted independently and zipped into a single download when done.
Yes — pixel dimensions are preserved by default. If you want to resize during conversion, use the PNG resize tool after the conversion finishes.
Yes. Uploads are encrypted in transit, the conversion job runs on an isolated worker, and the original JPEG plus the resulting PNG are deleted within an hour.
If PNG is lossless and JPEG was lossy (or vice versa), file size will change. PNG (lossless) is typically larger than JPG (lossy) for photographs but smaller for solid-color graphics and screenshots.
If JPEG is animated (GIF, WebP, APNG) and PNG also supports animation (GIF, WebP), all frames are preserved. Converting animated JPEG to a static target (JPG, PNG) keeps only the first frame.
Yes. The converter is mobile-responsive and processes images server-side, so you can convert JPEG to PNG from any iPhone or Android device without using local storage.

JPEG

JPEG 使用针对照片优化的有损压缩,在质量和文件大小之间取得平衡。

PNG

PNG 文件支持透明度并使用无损压缩,因此非常适合用于图形、徽标和屏幕截图。


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