图片格式转换
免费在线图片格式转换工具，支持 JPG、PNG、WebP、BMP 等格式互转，快速便捷。
点击或拖拽图片到此处
支持 JPG / PNG / WebP / BMP / GIF / SVG
所有转换在浏览器本地完成，图片不会上传至服务器。
PNG → JPEG 转换时透明背景将填充为白色。
相关关键词
How to Use Image Converter
Different image formats serve different purposes: JPEG is great for photographs with small file sizes, PNG preserves transparency and sharp edges, WebP offers the best compression for the web, and BMP is an uncompressed format used by some legacy applications. Our Image Converter lets you switch between these formats instantly using the Canvas API — entirely in your browser, with no server upload. Whether you need to convert a PNG to JPEG to reduce size, a WebP to PNG for compatibility, or any other combination, this tool handles it in seconds and lets you download the result immediately.
- 1
Upload your image
Click to select or drag and drop an image file in any supported format.
- 2
Choose output format
Select the target format: JPG, PNG, WebP, or BMP.
- 3
Convert and download
Click Convert and download your newly formatted image.
Frequently Asked Questions
Does converting to JPEG remove transparency?
Yes. JPEG does not support transparency. Transparent areas are typically filled with a white background when converting to JPEG.
Which format is best for web use?
WebP generally offers the best combination of quality and file size for web images. JPG is widely supported as a fallback.
Does conversion affect image dimensions?
No. The converted image retains the same pixel dimensions as the original. Only the format changes.