圖片壓縮主要透過頁面體驗影響 SEO。沉重的圖片會拖慢頁面，尤其在行動網路下。較快的頁面更容易讓使用者瀏覽，也更容易讓搜尋引擎有效率地爬取。
目標不是盡可能小的檔案。目標是一張足夠輕、能快速載入，又足夠清晰以發揮作用的圖片。
實用的優化順序
- 將過大的圖片重新調整尺寸。
- 在支援時使用 WebP 等現代傳輸格式。
- 以看起來仍然乾淨的品質設定進行壓縮。
- 當圖片對頁面有貢獻時，加入有意義的 alt text。
- 測試真實頁面，而不只是單獨的檔案。
常見問題
圖片壓縮會直接提升排名嗎？
壓縮有助於頁面速度與使用者體驗，進而支援 SEO。但它本身並不是神奇的排名開關。
過度壓縮會傷害頁面嗎？
會。如果圖片變得模糊或讓人難以信任，使用者可能離開或猶豫，尤其是在商品頁面。
Resources
參考資源
利用這些參考資源，在指南、對應的支援頁面與內容製作者之間切換。
Compress JPG, PNG, and WebP images locally with quality controls.
開啟工具Image Resize ToolResize images to exact pixel dimensions with local browser processing for supported files.
開啟工具網站最佳圖片尺寸：實用指南在不浪費頁面載入量的前提下，為網站主視覺、部落格圖片、產品照片、縮圖與 Retina 螢幕挑選實用的圖片尺寸。
閱讀指南如何為線上商店壓縮商品圖片實用工作流程：在保留細節、色彩和買家信心的同時，讓商品圖片更輕量。
閱讀指南為什麼上傳後圖片看起來模糊？一份實用的模糊上傳圖片疑難排解指南，涵蓋尺寸限制、壓縮、Retina 顯示器與格式選擇。
閱讀指南Leon PatelCreates how-to guides and photo tips that keep the advice simple, clear, and ready to use in Gift Studio.
查看作者Dylan RossChecks guides and photo tips for freshness, usefulness, and a calm editorial voice.
查看審閱者開啟 Gift StudioApply the guide in the editor when you are ready to make the gift.
製作禮物See how the article was reviewed, then use the buttons below if something needs attention.
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