PNG 檔案常常很大，是因為 PNG 設計用來精確保留像素。這對透明度、UI 圖形、螢幕截圖與文字密集的圖片很有用，但對照片與大面積漸層可能效率不佳。
如果 PNG 包含商品照片、主視覺圖片或螢幕截圖，將提供用的副本轉換為 WebP 可縮減檔案大小。如果 PNG 是小型圖示或扁平標誌，節省幅度可能很小。
適合保留 PNG 的時機
- 可編輯的原始檔。
- 邊緣銳利的透明圖形。
- 需要文字清晰的螢幕截圖。
- 要求像素完全一致的作業流程。
網站傳輸時，請用 PNG to WebP 或 圖片壓縮工具 比較副本。
常見問題
為什麼 PNG 比 JPG 大？
PNG 通常是無損的，能保留銳利邊緣與透明度；而 JPG 會捨棄細節來縮小照片。
我該把每個 PNG 都轉成 WebP 嗎？
不。請先測試。WebP 對許多大型 PNG 有幫助，但小型圖示與最佳化的扁平圖形可能已經很有效率。
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。
Convert PNG images to smaller WebP files in your browser.
開啟工具Image CompressorCompress JPG, PNG, and WebP images locally with quality controls.
開啟工具如何將 PNG 壓縮成更小的檔案了解 PNG 壓縮何時有幫助、何時轉成 WebP 更聰明，以及如何在不破壞透明或銳利文字的情況下縮小圖片大小。
閱讀指南PNG vs WebP vs AVIF：該用哪種圖片格式？針對網站圖片、透明背景、螢幕截圖、照片與瀏覽器支援，實用比較 PNG、WebP 與 AVIF。
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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