Make large PDFs small enough to email or upload. Images are recompressed and unused data removed while text stays crisp. Image-heavy files often shrink by 90% or more.
Free · no sign-up · no watermark
Any PDF that's too big to send.
Balanced for everyday use, or strong for the smallest file.
See the new size before you download.
It depends on the content. Scans and photo-heavy PDFs shrink the most, often by 90% or more. Text-only PDFs are usually small already.
Text and vector graphics stay sharp. Photos are recompressed; the balanced level keeps them looking good on screen and in print.
是的。无需账户即可免费使用：每天 3 个任务（注册免费账户可达 6 个），文件最大 20 MB。不添加水印。如需更多，日通行证 24 小时 $1.99，Pro 版 $5.99/月。
文件通过 HTTPS 传输并存储在您的私人工作区，绝不会被共享或用于训练 AI。无账户会话中的文件将在 24 小时后自动删除，您也可以随时自行删除任何文件。