Compress images without installing software
This online image compressor works in modern browsers. It is useful when a website, form, email, or CMS rejects images because the file size is too large.
怎么选更合适
| 用户需求 | 推荐做法 | 注意事项 |
|---|---|---|
| Large phone photo | Resize, then compress | Better quality than heavy compression only |
| Website upload limit | Export JPG or WebP | Check platform compatibility |
| Many images at once | Use batch compression | Download results as ZIP |
| Text screenshot | Use moderate quality | Avoid blurry text edges |
How to use it
- Open the image compressor.
- Upload JPG, PNG, or WebP images.
- Adjust the quality setting and preview the new file size.
- Download compressed images or a ZIP package.
Tips
If a large image still exceeds the required limit, reduce its dimensions first, then compress it again. WebP often gives smaller files, while JPG is widely compatible.
国内用户常见问题
How do I compress an image online?
Open the image compressor, upload JPG, PNG, or WebP files, adjust the quality setting, preview the new file size, and download the result.
Are my images uploaded to a server?
No. The compression runs locally in the browser, so images are not uploaded to a server.
How can I compress an image under 500KB?
Resize large images first, then lower the export quality until the file size is below 500KB.
Which format is best for compression?
JPG is widely compatible, WebP often creates smaller files, and PNG is better when transparency is required.