About This Tool
What is 图片格式转换工具?
A tool for converting between PNG, JPG, and WebP image formats. Useful for web optimization by converting to WebP, or for compatibility by converting to JPG/PNG. All processing happens in your browser.
How to Use
- Click 'Select Image' to upload the image to convert.
- Choose the target format (PNG, JPG, WebP).
- Adjust quality for JPG/WebP if needed.
- Download the converted image.
Key Features
- Convert between PNG, JPG, and WebP formats
- Quality adjustment (JPG, WebP)
- Browser-based processing for privacy
- Instant download after conversion
Tips
- WebP provides up to 26% smaller files than PNG and 34% smaller than JPG.
- Use PNG or WebP for images that need transparent backgrounds.
- JPG is best for photographs, while PNG works better for graphics with text or sharp edges.
图片格式转换工具
在 PNG、JPG 和 WebP 图片格式之间相互转换
Frequently Asked Questions
网站应该使用哪种图像格式？▼
WebP是大多数网页图像的最佳选择——支持有损和无损压缩、透明度和动画。不支持WebP时使用JPG。仅在需要无损透明度时使用PNG。图标和logo最适合SVG。
格式转换会降低图像质量吗？▼
从有损格式（JPG）转换到另一个有损格式（WebP）可能累积质量损失。从无损（PNG）转有损（JPG/WebP）质量只降低一次。从有损转无损（JPG→PNG）保持当前质量但不会恢复已丢失的细节。
转换是在服务器还是浏览器中进行的？▼
所有转换完全在浏览器中使用HTML5 Canvas API进行。图像永远不会上传到任何服务器。文件保持私密，即使没有网络连接也能工作。