壓縮PDF
減小檔案體積，方便分享。
將檔案拖到此處
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支援格式: PDF
壓縮會重新繪製頁面，因此可選取的文字會變成圖片。要列印的文件請選擇最佳品質。
免費 · 無需註冊 · 大多數工具檔案不離開您的裝置
此工具完全在您的瀏覽器中執行——檔案不會被上傳。
使用方法
1
上傳
2
設定
3
下載
常見問題
Is 壓縮PDF free?
Yes. 壓縮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 壓縮PDF safe and private?
Yes. 壓縮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. 壓縮PDF works in any modern browser — Chrome, Safari, Firefox or Edge. There is nothing to download and no account to create.
Does 壓縮PDF work on a phone?
Yes. 壓縮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 壓縮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.