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壓縮 PDF

整理

透過品質控制減小 PDF 大小。

將 PDF 拖曳到此處

處理 ≤ 50.0 MB

關於此工具

透過品質控制減小 PDF 大小。

架構層面的隱私保護

所有處理都在您的瀏覽器中進行。您的 PDF 永遠不會上傳到我們的伺服器。無需帳戶，無使用限制。

工作原理

  1. 1選擇 PDF — 永遠不離開你的裝置
  2. 2按需配置工具
  3. 3結果儲存到下載

Frequently asked questions

Is this PDF compressor free?

Yes, completely free with no usage limits.

How much will the file be reduced?

Lossless mode trims 5-30% on most PDFs. Balanced and Maximum rasterize each page as a JPEG and typically cut size by 50-80% — at the cost of selectable text.

Will compression affect quality?

Lossless keeps the file pixel-perfect (it only restructures the PDF). Balanced and Maximum rasterize pages at 144 or 96 DPI respectively — text turns into an image and becomes unsearchable.

Will my PDF be uploaded to a server?

No. Compression runs entirely in your browser.

Does it work offline?

Yes, after the first visit.