上传 PNG 图片
拖放即可开始，或使用文件选择器。
调整大小
更多选项
相关工具
PNG 转 JPG 转换器
免费在线将 PNG 图片转换为 JPG 格式，缩小文件大小同时保持画质。
JPG 转 PNG 转换器
免费在线将 JPG 图片转换为 PNG 格式，获得无损画质并支持透明背景。
WebP 转 PNG 转换器
免费在线将 WebP 图片转换为 PNG 格式，获得通用兼容性与无损画质。
JPG 转 WebP 转换器
免费在线将 JPG 图片转换为 WebP 格式，以次世代压缩技术缩小文件大小。
WebP 转 JPG 转换器
免费在线将 WebP 图片转换为 JPG 格式，获得通用兼容性与可调画质。
HEIC 转 JPG 转换器
免费在线将 iPhone HEIC/HEIF 照片转换为 JPG 格式。快速、私密，完全在浏览器中运行。
使用方法
上传您的图片
拖放图片或点击选取。接受所有常见格式。
设置画质
调整输出画质以平衡文件大小与视觉保真度。
下载转换后的文件
转换后的图片数秒内即可下载。
为什么使用此工具
100% 免费
核心工具可免费使用；AI 及云端工具可能设有每日用量限制。
无需安装
完全在浏览器中运行。无需下载或安装任何软件。
隐私且安全
本地工具把输入留在设备；需要传送数据的工具会清楚标示。
支持移动设备
完全响应式设计——在手机、平板或桌面电脑上均可使用。
您的文件保持私密
此工具完全在您的浏览器中处理文件。不会上传至任何服务器——您的数据永远不会离开您的设备。
- 无服务器上传——100% 客户端处理
- 不存储数据——关闭标签页时文件即被丢弃
- 无需账号——无需注册即可立即使用
PNG to WebP: Slash File Sizes with the Modern Web Format
Key Takeaways
- WebP delivers 26% smaller file sizes than PNG for lossless images while maintaining identical visual quality and transparency support.
- All major browsers now support WebP, making it the optimal format for web performance and Core Web Vitals scores.
- WebP supports both lossy and lossless compression with alpha transparency — combining the best features of PNG and JPG in one format.
PNG files deliver excellent quality but their large file sizes can slow down websites significantly. WebP, developed by Google, provides the same lossless quality and transparency as PNG at dramatically smaller file sizes. Converting PNG to WebP is one of the easiest performance wins for any website, directly improving page load times, bandwidth costs, and search engine rankings.
26%
WebP lossless size reduction vs PNG
When to Convert PNG to WebP
Website Performance Optimization
Replace PNG assets with WebP to reduce page weight by 20-30%, improving Core Web Vitals scores and Google search rankings without sacrificing visual quality.
E-Commerce Product Images
Product images with transparent backgrounds benefit enormously from WebP — maintain crisp cutouts while loading faster on category pages with dozens of images.
Progressive Web Apps
PWAs need to be fast and lightweight. WebP assets reduce the app shell size and improve performance on mobile networks where bandwidth is limited.
CDN and Bandwidth Savings
High-traffic websites serving millions of images monthly can cut storage and bandwidth costs significantly by migrating PNG assets to WebP format.
Tips for PNG to WebP Conversion
Use lossless WebP mode to maintain exact pixel-for-pixel quality with your original PNG — perfect for graphics and icons.
For photographs that were saved as PNG, try lossy WebP at quality 80-90 for even greater file size reductions.
WebP supports animated images too — consider it as a replacement for animated PNG (APNG) assets.
Keep your original PNG files as source assets. WebP is ideal for distribution and web delivery.
All conversion happens entirely in your browser using the Canvas API. No images are uploaded to any server, ensuring your files remain private and secure.