5 Best Free PDF Readers for 2025

Foxit Reader 是一款免費的 PDF 檔案閱讀工具，它的特色是檔案小，啟動及閱讀瀏覽速度快。 Foxit Reader 與 Adobe Reader 最大的不同就在於，執行的效能比 Adobe Reader 快上許多，是一種閱讀 PDF 檔的新選擇。

Here is a list of best free portable PDF reader for Windows. These software are almost similar to their standard counterparts, but portable version of PDF readers does not need installation to work, unlike standard software.

Foxit Reader is a feature rich PDF viewer which allows you to open, view, sign, and print any PDF file. Foxit Reader is the only high volume PDF reader providing a complete PDF creation solution, providing the power of PDF creation to every desktop.

本教學全面介紹免安裝PDF閱讀器，包括其原理、適用族群、與安裝型閱讀器的比較、主流工具功能對照、下載與使用流程、常見問題解答，以及實際應用場景，幫助讀者在不同工作環境下靈活、安全地處理PDF文件。

Portable version is a single executable, can be run from USB drive and doesn't write to registry.

Foxit Reader is a small, lightning fast, and feature rich PDF viewer which allows you to create (free PDF creation), open, view, sign, and print any PDF file.

市面上有許多免費的 Adobe Reader 替代方案，例如 Foxit PDF Reader、PDFgear 以及 Tenorshare PDNob。 這些工具不僅能免費開啟 PDF，還支援註解、搜尋、轉換等進階功能，使用上更輕量、省資源，是一般閱讀或辦公使用的理想選擇。