Free2BoxFree2Box

使用方法

1

上传您的图片

拖放图片或点击选取。接受所有常见格式。

2

设置画质

调整输出画质以平衡文件大小与视觉保真度。

3

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

没有隐藏费用,没有付费等级——所有功能完全免费。

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

您的数据永远不会离开您的设备。不会上传至任何服务器。

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

JPG to WebP: Optimize Photos for Faster Web Performance

Key Takeaways

  • WebP produces 25-34% smaller files than JPG at equivalent visual quality, making it the best format for web photo delivery.
  • Google's PageSpeed Insights specifically recommends serving images in WebP format to improve Core Web Vitals scores.
  • With 97%+ global browser support, WebP is now the standard choice for optimizing photographs on the modern web.

Photographs make up the majority of bytes on most web pages, and JPG has been the default photo format for decades. WebP changes the equation by delivering the same visual quality at significantly smaller file sizes. Converting your JPG photos to WebP is the single most impactful image optimization you can make — reducing page load times, improving user experience on mobile, and boosting your search engine rankings.

WebP lossy images are 25-34% smaller than comparable JPG images at equivalent quality

Google Research

When to Convert JPG to WebP

1

Blog and Content Sites

Articles with multiple hero images and inline photos load noticeably faster with WebP, reducing bounce rates and improving reader engagement.

2

Photography Portfolios

Showcase high-resolution work that loads quickly. WebP maintains the visual fidelity photographers demand while cutting bandwidth consumption by a third.

3

Social Media and Ad Creatives

Smaller file sizes mean faster uploads and snappier loading on platforms that accept WebP, giving your content an edge in fast-scrolling feeds.

4

Mobile-First Web Applications

Mobile users often have slower connections. WebP photos load faster on 4G/5G networks, directly improving mobile Core Web Vitals and user satisfaction.

Tips for JPG to WebP Conversion

Quality setting of 75-85 typically produces WebP files that are visually indistinguishable from the JPG original at half the file size.

For hero images and above-the-fold content, use quality 85-90 to ensure pristine visual quality where it matters most.

Serve WebP with JPG fallback using the HTML picture element for the small percentage of users on unsupported browsers.

Always keep your original JPG files. Convert to WebP for web delivery, treating WebP as a distribution format.

All photo conversion happens entirely in your browser. Your images never leave your device, ensuring complete privacy and eliminating upload wait times.

常见问题