Extreme File Compressor — Smallest Possible File Free
Compress files to the absolute smallest size with extreme settings. Accept lower quality for maximum reduction — free, private, no upload, no sign-up.
Drop your file here, or click to browse
文件在浏览器中处理 —— 不会上传任何内容。
What is an extreme file compressor?
这是什么
An extreme file compressor applies the most aggressive settings to produce the smallest possible file, accepting more quality loss than the balanced default. filecompressor.app runs this in your browser, so your files stay private.
Use it when size is the only thing that matters — strict upload limits, thumbnails, or previews where a lower-quality result is acceptable.
How to use extreme compression
使用方法
Extreme compression is one step:
- 1
Drop your image or PDF into the dropzone above, or click to browse.
- 2
The compressor applies the lowest viable quality and highest compression level, then shows the final size and percentage saved.
- 3
Click Download to save the smallest possible file.
Why use extreme compression?
为什么使用
Produces the smallest possible file size.
20–40% smaller than the default balanced setting.
100% private — files are processed in your browser and never uploaded.
Free with no sign-up, no watermarks, and no limits.
Ideal for strict upload limits, thumbnails, and previews.
FAQ
关于此压缩工具的常见问题。
常见问题
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