網站最佳的圖片尺寸不是一個通用的數字。它取決於圖片出現的位置。小小的縮圖、產品圖庫，與全寬主視覺，都需要不同的像素尺寸。
請以實際最大的顯示尺寸作為起點。如果部落格圖片以 900 像素寬顯示，匯出 900 到 1800 像素寬的版本，通常比上傳 4000 像素的原始檔更實用。
實用的起點
| 用途 | 實用寬度 |
|---|---|
| 部落格內文圖片 | 900-1400 px |
| 全寬主視覺 | 1600-2400 px |
| 產品圖庫 | 1200-2000 px |
| 縮圖 | 300-600 px |
| 標誌 | 依版面而定；SVG 通常更好 |
用 Image Resize Tool 調整副本尺寸，再用 Image Compressor 壓縮傳遞用的檔案。
常見問題
網站圖片應該多大？
應該接近它在頁面上出現的最大尺寸，只有在高密度螢幕需要時才額外增加像素。
越大畫質一定越好嗎？
不一定。過大的檔案會拖慢頁面，而且仍可能被平台再次壓縮。
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.
開啟工具如何調整社群媒體圖片尺寸：Instagram、YouTube、Twitter、LinkedIn使用免費的瀏覽器工具，為 Instagram 貼文、YouTube 縮圖、Twitter 卡片和 LinkedIn 個人檔案取得正確的圖片尺寸，並讓你的檔案保持私密。
閱讀指南圖片壓縮如何影響 SEO 與頁面速度了解較輕的圖片如何在不過度壓縮重要視覺元素的情況下，改善頁面速度、使用者體驗與搜尋表現。
閱讀指南如何在不變形的情況下調整圖片尺寸了解長寬比、裁切、拉伸和目標尺寸如何影響圖片縮放品質。
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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