How does this tool handle transparent PNG backgrounds?
Since JPEG does not support transparency, you can choose a background color (white, black, or custom) to fill transparent areas cleanly.
在线PNG转JPG — 免费将透明PNG转换为JPEG
Convert PNG images to JPEG format with custom background fill.
Drop PNG images here to convert to JPG
Select or drop PNG images to convert to high-compatibility JPEG
图片预览
如何使用 PNG转JPG转换器
1
选择并上传
Upload or drag and drop your PNG images into the studio stage.
2
配置和预览
Select your desired JPEG quality and choose background fill color for transparent areas.
3
处理和下载
Click 'Convert to JPG' to process and download your converted images instantly.
技术架构与客户端隐私
Processing Engine
Browser Canvas 2D & Binary Transcoder
Privacy Model
100% In-Memory Sandbox · Zero Server Uploads
Format Standards
PNG, JPEG, WebP, SVG, ICO Specifications
Execution Speed
Zero Network Latency · Instant Local Output
Frequently Asked Questions
Are my images uploaded to any remote server?
No. All conversion is executed 100% locally in your browser memory via HTML5 Canvas. Your images never leave your computer.
Can I convert multiple PNG files at once?
Yes! You can upload batches of PNG files and download them individually or as a single combined ZIP archive.