图片转 PNG 转换器

100% 免费。在本地将图片转换为 PNG—无需上传,无需注册。您的文件永远不会离开您的设备。

Drag and drop images

or click the button below to select files (multiple files supported)

100% Free · Local conversion · No Uploading · No Signup · Max 10MB per file

Converts on your device only. Files never leave your computer. 40+ formats: WebP, PNG, JPEG, SVG, BMP, AVIF, HEIC, TIFF, GIF, ICO, PSD, TGA, and more.

为什么选择我们的图片转换器?

强大的功能让图片转换简单安全

local

100% 本地转换

所有图片转换完全在您的设备上进行。您的文件永远不会离开您的计算机—不上传到服务器,不收集数据,完全隐私和安全。

  • 无需上传文件
  • 完全数据隐私
  • 可离线使用
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闪电般快速处理

几秒钟内转换图片,而不是几分钟。我们优化的转换引擎每个文件大约处理 1 秒,您可以同时批量处理数百张图片。

  • 每张图片约 1 秒
  • 支持批量处理
  • 无需排队等待
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永久 100% 免费

无隐藏费用,无订阅,无水印。随时使用我们的图片转换器,完全免费,无任何附加条件。

  • 无需注册
  • 无使用限制
  • 输出无水印

批量处理能力

使用我们强大的批量处理功能一次转换多张图片。上传数百张图片并一次性全部转换,节省数小时的手动工作。

  • 处理数百张图片
  • 单独文件状态跟踪
  • 一次性下载全部

常见问题

关于我们的图片转换器,您需要了解的一切

About PNG Image Format

PNG (Portable Network Graphics) is a lossless image format that supports transparency and high color depth. Unlike JPG, PNG preserves every pixel of your original image without any quality loss, making it perfect for graphics, logos, screenshots, and images that require transparency.

Our PNG converter accepts over 40 input formats including JPG, WebP, GIF, BMP, TIFF, HEIC, AVIF, SVG, and many more. The conversion process is entirely local – your images never leave your device, ensuring complete privacy and security for sensitive content.

PNG's support for alpha channel transparency makes it the preferred format for web graphics, UI elements, and any image that needs to blend seamlessly with different backgrounds. The format also supports 24-bit RGB and 32-bit RGBA color, providing excellent color accuracy.

While PNG files are typically larger than JPG due to lossless compression, they're essential when image quality and transparency are priorities. Our converter optimizes the output to achieve the best balance between quality and file size for your specific needs.