图片压缩
在本设备处理 · 无需上传无损压缩 JPG、PNG 和 WebP 图片。
如何压缩图片
- 拖放或选择要压缩的图片文件（JPG、PNG、WebP）。
- 调整画质和最大宽度，然后点击「开始压缩」。
- 压缩完成后查看结果并下载。
Compressing images is essential whenever you upload to a blog, online store, or email where file-size limits apply. This tool compresses JPG, PNG, and WebP images right in your browser, cutting file size dramatically with no visible loss in quality. Files are processed only on your device and never uploaded to a server, so it's fast and private.
How quality stays while size drops
Image compression reduces color and detail data that the human eye barely notices, shrinking the file. With the quality slider at 70–80%, most photos drop to less than half their size while looking virtually identical. If a photo is very large, limiting the max width (e.g. 1920px) alone can save a lot of space.
When this is useful
Great for speeding up blog and store pages, attaching several photos to an email, or sharing images in chat apps. Drag in multiple files to compress them in one batch. Trimming away empty margins with the crop tool before compressing can shrink the file even further.
Which format should you save?
Use JPG for photos, PNG when you need a transparent background, and WebP for a modern format that combines both strengths. To understand the differences, see our JPG vs PNG vs WebP guide. For deeper tips, read the complete guide to reducing image size.
常见问题
- 压缩图片会降低画质吗？
- 智能压缩算法可最大程度减少可见画质损失。您可以通过画质滑块自行调节压缩强度。
- 支持哪些图片格式？
- 支持JPG、PNG、WebP等浏览器支持的所有图片格式。
- 文件会上传到服务器吗？
- 不会。所有压缩处理100%在浏览器中完成，文件不会发送到任何外部服务器。
- 可以同时压缩多张图片吗？
- 可以，您可以同时选择或拖放多个图片文件进行批量压缩。
- How much can I reduce the file size?
- It depends on the original and settings, but at around 75% quality most images shrink by 50–80%. Lowering quality further or limiting the width reduces size even more.
- Can I compress several images at once?
- Yes. Select or drop multiple images and they'll be compressed together in one batch.