圖片上傳後通常會變模糊，是因為目標平台改動了它們。CMS、電商平台、社群平台或佈景主題可能會重新調整檔案大小、再次壓縮、裁切，或以超過你上傳像素的尺寸顯示。
先檢查最終顯示尺寸。如果圖片以寬度 1200 像素顯示，請上傳至少寬度 1200 像素的乾淨檔案。為了在高密度螢幕上清晰呈現，許多網站使用 2 倍來源效果很好，例如 1200 像素顯示區塊對應 2400 像素。
常見原因
- 上傳的圖片小於顯示區域。
- 平台對上傳內容進行強力壓縮。
- 佈景主題用 CSS 拉伸圖片。
- 文字或螢幕截圖以低畫質 JPG 匯出。
- 行動版顯示了錯誤的裁切。
可以嘗試的做法
使用 圖片尺寸調整工具 以目標尺寸匯出副本。若檔案過大，請將結果透過 圖片壓縮工具 處理，並在替換上線圖片前進行比較。
常見問題
為什麼圖片在本機很清晰，上傳後卻模糊？
網站或應用程式可能重新調整尺寸、再次壓縮，或以超過實際像素的尺寸顯示圖片。
壓縮會讓圖片變模糊嗎？
會。過低的品質設定會讓細節變軟，尤其是文字、商品邊緣與螢幕截圖。
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。
閱讀指南網站圖片該用 JPG、PNG 還是 WebP？針對照片、標誌、截圖、透明背景與日常網站發布，比較 JPG、PNG 與 WebP。
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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