How does the compression work?

Our tool converts each page of your PDF into a high-quality image and then re-assembles them into a new, smaller PDF. This "rasterization" process is extremely effective at reducing file size, especially for documents with many high-res images.

Will text remain selectable?

No. Because we convert pages to images to achieve maximum compression, the text will no longer be selectable. This is similar to scanning a physical document.

Is my document private?

Yes! All processing happens entirely in your browser. Your PDF is never uploaded to any server.

💡Quick Answer

Significantly reduce PDF file size by compressing images within the document. Choose Low, Medium, or High compression. Ideal for email attachments.

压缩PDF

通过将页面光栅化为优化图像来压缩PDF文件。选择文件大小和质量之间的平衡。非常适合满足电子邮件附件限制。

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或拖放文件

支持最大50MB的PDF文件