PNG Image Conversion: Batch Convert, Resize & Organize
PNG文件格式支持真是顏色（16百萬色），而GIF文件格式之容許256色。PNG的用武之地在於有大部分都是同樣顏色的圖像。無損格式PNG最適合修改圖畫。況且，所有現代瀏覽器都支持PNG。
Contenta Converter PREMIUM lets you open, convert, and batch process PNG files into modern formats like JPG, PNG, TIFF, PDF, and more. Optimize file size, keep important metadata, and prepare images for web, print, or long-term archiving in just a few clicks.
How it works
答案
格式 |
PNG |
JPG |
公司 |
Portable Network Graphics |
Joint Photographic Experts Group |
| 說明 | PNG文件格式支持真是顏色（16百萬色），而GIF文件格式之容許256色。PNG的用武之地在於有大部分都是同樣顏色的圖像。無損格式PNG最適合修改圖畫。況且，所有現代瀏覽器都支持PNG。 | 差不多所有數碼相機都會有把圖像保存為JPEG的選項。JPEG格式支持每色8位（紅，綠，藍），文件大小也比較小。只要不使用重度壓縮，圖像質量不會受太大的影響。不過JPEG文件如果不斷被修改，保存的話，很有可能會退化。若您計劃以後修改照片圖像，或不能接受圖像失真，把它們保存為非JPEG的無損圖像格式的話會比較好。話雖如此，JPEG大致上是最適合網絡發佈的格式。 |
| 優點 | 無損，受歡迎，16百萬色 | 小的文件大小，非常受歡迎 |
| 缺點 | 大的文件大小 | 質量損失 |
| PNG | JPG | |
| ency_spec_compression | Lossless | Lossy |
| ency_spec_filesize | 5–30 MB | 2–10 MB |
| ency_spec_bitdepth | 8/16-bit | 8-bit |
| ency_spec_transparency | Yes (alpha channel) | No |
| ency_spec_animation | No | No |
| ency_spec_websupport | Universal | Universal |
| ency_spec_bestfor | Graphics, logos, transparency | Web sharing, social media |
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使用者證明:
"今天一定得轉換一些圖像。你的軟件真是救了我一命！謝了！"Jason Hoffman，加利福尼亞州
"我每天都拍攝RAW圖像。我非常喜歡你的軟件，因為它很省時。"Jim Richardson，印第安納州
"我一直都在注意圖像轉換器。我發覺你們的軟件乾淨，簡單，而且非常棒！"Brandon Keegan，紐約州
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Frequently Asked Questions about PNG
What is a PNG image file?
A PNG file is a type of image format used in various tools and workflows. With Contenta Converter PREMIUM you can convert PNG files to more common formats like JPG, PNG, or PDF without losing control over quality.
How do I convert PNG images to JPG?
Install Contenta Converter PREMIUM, add your PNG files to the input list, choose JPG as the output format, and click Convert. The software will process all selected files in a single batch.
Can I batch-process many PNG images at once?
Yes. Contenta Converter PREMIUM is built for batch processing and can handle hundreds or thousands of PNG images in one operation, using all available CPU cores.
When should I convert PNG images to another format?
Convert PNG images when you need better compatibility with web browsers, design tools, or printing services. Exporting to formats like JPG, PNG, or TIFF from Contenta Converter PREMIUM makes sharing and archiving much easier.
Does PNG support transparency?
Yes. PNG supports full alpha channel transparency, meaning each pixel can be fully transparent, fully opaque, or any level in between. This makes PNG ideal for logos, icons, and images that need to overlay other content.
Why are PNG files so much larger than JPG?
PNG uses lossless compression, preserving every pixel exactly. JPG uses lossy compression that discards imperceptible details, achieving 5-10x smaller files for photographs. For photos destined for the web, JPG or WEBP is usually the better choice.
Need more than PNG conversion? Browse supported cameras that produce PNG files below, or: