压缩PDF
减小文件体积，方便分享。
将文件拖到此处
或
支持格式: PDF
压缩会重新绘制页面，因此可选中的文字会变成图片。要打印的文档请选择最佳质量。
免费 · 无需注册 · 大多数工具文件不离开您的设备
此工具完全在您的浏览器中运行——文件不会被上传。
使用方法
1
上传
2
设置
3
下载
常见问题
Is 压缩PDF free?
Yes. 压缩PDF is completely free with no sign-up, no watermark and no daily limit. There is no paid tier — every tool on iAdorePDF is free to use as often as you like.
Is 压缩PDF safe and private?
Yes. 压缩PDF runs entirely inside your browser, so your file is never uploaded to any server. Nothing leaves your device, which makes it safe for confidential documents.
Do I need to install any software?
No. 压缩PDF works in any modern browser — Chrome, Safari, Firefox or Edge. There is nothing to download and no account to create.
Does 压缩PDF work on a phone?
Yes. 压缩PDF is built mobile-first and works on iPhone and Android exactly as it does on a computer, straight from the browser.
How much smaller will my PDF be?
Scanned and image-heavy PDFs usually shrink by 50-80%. Pick Smallest size for email attachments, or Best quality when the document will be printed. Compression re-renders pages, so selectable text becomes an image.
How do I use 压缩PDF?
Open the page, drop your file into the upload box (or tap Select file), choose your options, then press the start button. Your result downloads straight to your device.
Is there a file size limit?
There is no server limit because the work happens on your own device. The practical ceiling is your device memory; files up to about 100 MB are comfortable on most phones and much larger on a computer.