About This Tool
What is 图片压缩工具?
An image compression tool that reduces file sizes. Adjust quality to achieve your desired compression level and batch process multiple images at once. Essential for website loading speed optimization.
How to Use
- Click 'Select Images' to choose images to compress (multiple allowed).
- Set the output format and quality.
- Click 'Compress'.
- Review savings compared to originals and download.
Key Features
- Batch compression of multiple images
- Quality adjustment for file size optimization
- Savings percentage display vs original
- Bulk download functionality
Tips
- Web images compressed to 80% quality are usually indistinguishable from originals to the naked eye.
- Image compression directly improves Core Web Vitals scores.
- Converting banners and hero images to WebP can significantly reduce file sizes.
图片压缩工具
通过调整质量来减小图片文件大小，支持批量压缩。
Frequently Asked Questions
网页图像应使用什么质量设置？▼
大多数网页图像在75-85%质量时能在文件大小和视觉质量间取得最佳平衡。照片可以降到70%而不会明显退化。含文字或锐利边缘的图像应保持85%以上以避免边缘伪影。
在不损失可见质量的情况下能减少多少文件大小？▼
通常可实现50-70%的文件大小减少且视觉影响最小。5MB的照片在80%质量下通常可压缩到1-2MB而无可感知差异。结果因图像内容而异——细节丰富的照片比简单图形压缩率低。
压缩PNG图像会降低质量吗？▼
PNG是无损格式，所以PNG到PNG的压缩主要是删除元数据和优化编码，不会损失质量。但如果将PNG压缩为JPG或WebP（有损），质量会下降。此工具转换为有损格式以实现最大的文件大小减少。