Image Format Converter
Convert PNG/JPG/WEBP to target formats locally in the browser, supporting quality adjustment and download.
图片格式转换
上传图片，选择目标格式，一键转换并下载。全程在浏览器本地处理，不上传服务器。
Click to select or drag and drop here
Supports PNG / JPG / WEBP / GIF / AVIF / HEIC / HEIF (Max 10MB)
转换设置
Why do we need Image Format Conversion?
In modern web development and daily work, we often need to balance between different image formats:
- JPG / JPEG: The most common lossy compression format. It has a small file size and is ideal for photographs, but it does not support transparent backgrounds.
- PNG: A lossless compression format that supports an alpha channel (transparency). It is perfect for icons, logos, and screenshots with text, though its file size is usually larger than JPG.
- WebP: A modern image format developed by Google that supports both lossy and lossless compression, as well as transparency. At the same quality, WebP files are 25% to 35% smaller than PNGs and JPGs, making it the best choice for web optimization.
How to use this online image converter?
It's incredibly simple: Click the upload area to select your image (drag & drop is supported), then choose your target format (JPG, PNG, or WebP) from the dropdown menu. Click "Convert", and the system will instantly process it and provide a download button.
100% Local Processing & Privacy Secure
Unlike many websites that require you to upload your images to cloud servers and wait in queues, our tool utilizes modern browser HTML5 Canvas and Web API technologies. Your images never leave your computer or phone. All decoding, redrawing, and compression encoding happen instantly in your local device's memory, absolutely protecting your personal privacy and business secrets.