要在不變形的情況下調整尺寸，請保留原始長寬比。長寬比是寬度與高度之間的關係。如果您改變一邊，另一邊通常應以相同比例縮放。
例如，1600 x 900 的圖片比例為 16:9。將其調整為 800 x 450 會保持相同形狀。除非裁切，否則將其調整為 800 x 800 會拉伸或壓扁內容。
簡單規則
如果目標需要不同的形狀，請裁切。如果需要相同形狀但不同尺寸，請調整大小。除非您知道最終圖片應該被拉伸，否則避免強制同時改變寬度和高度。
Image Resize Tool 預設啟用長寬比，因此一般縮放不會讓圖像變形。
常見問題
是什麼造成圖片變形？
當寬度和高度未保留原始長寬比而各自獨立變更時，就會發生變形。
裁切是否比拉伸更好？
通常是。裁切會移除部分圖像，而拉伸會改變其中所有內容的形狀。
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。
Resize images to exact pixel dimensions with local browser processing for supported files.
開啟工具Image CropperCrop images with free, square, portrait, landscape, and social media presets.
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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