[{"data":1,"prerenderedAt":349},["ShallowReactive",2],{"blog-post-/blog/zh-tw/image-best-practices":3,"related-posts-/zh-TW/blog/image-best-practices":348},{"id":4,"title":5,"author":6,"body":7,"category":328,"date":329,"description":330,"extension":331,"featured":332,"image":333,"meta":334,"navigation":335,"path":336,"readingTime":337,"seo":338,"stem":339,"tags":340,"tools":345,"__hash__":347},"content/blog/zh-TW/image-best-practices.md","2026 年網站圖片的 5 個基本最佳實踐","Anything Tools 團隊",{"type":8,"value":9,"toc":320},"minimark",[10,14,18,26,31,34,56,67,71,78,150,154,157,160,208,212,215,229,238,242,249,268,271,274,277,316],[11,12,5],"h1",{"id":13},"_2026-年網站圖片的-5-個基本最佳實踐",[15,16,17],"p",{},"圖片通常是網頁中最重的部分。如果優化不當，它們會拖慢載入時間，讓使用者感到沮喪，並損害您的 SEO 排名。",[15,19,20,21,25],{},"為了幫助您構建更快的網站，以下是每位開發人員和網站所有者都應該知道的 ",[22,23,24],"strong",{},"5 個網站圖片最佳實踐","。",[27,28,30],"h2",{"id":29},"_1-選擇正確的格式","1. 選擇正確的格式",[15,32,33],{},"JPEG 和 PNG 是您唯一選擇的日子已經一去不復返了。在 2026 年，現代格式統治著網路。",[35,36,37,44,50],"ul",{},[38,39,40,43],"li",{},[22,41,42],{},"使用 AVIF："," 獲得絕對最佳的壓縮和品質。",[38,45,46,49],{},[22,47,48],{},"使用 WebP："," 獲得出色的壓縮和通用瀏覽器支援。",[38,51,52,55],{},[22,53,54],{},"使用 SVG："," 用於徽標、圖示和簡單插圖（無限縮放）。",[15,57,58,61,62,66],{},[22,59,60],{},"專業提示："," 使用 ",[63,64,65],"code",{},"\u003Cpicture>"," 元素向現代瀏覽器提供 AVIF，同時提供 WebP/JPEG 降級。",[27,68,70],{"id":69},"_2-實施響應式尺寸","2. 實施響應式尺寸",[15,72,73,74,77],{},"向手機使用者提供 4K 桌面圖片是對頻寬的巨大浪費。使用 ",[63,75,76],{},"srcset"," 屬性讓瀏覽器根據使用者的裝置選擇合適的圖片尺寸。",[79,80,85],"pre",{"className":81,"code":82,"language":83,"meta":84,"style":84},"language-html shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","\u003Cimg src=\"small.jpg\"\n     srcset=\"small.jpg 500w, medium.jpg 1000w, large.jpg 2000w\"\n     alt=\"響應式圖片\">\n","html","",[63,86,87,117,132],{"__ignoreMap":84},[88,89,92,96,100,104,107,110,114],"span",{"class":90,"line":91},"line",1,[88,93,95],{"class":94},"sMK4o","\u003C",[88,97,99],{"class":98},"swJcz","img",[88,101,103],{"class":102},"spNyl"," src",[88,105,106],{"class":94},"=",[88,108,109],{"class":94},"\"",[88,111,113],{"class":112},"sfazB","small.jpg",[88,115,116],{"class":94},"\"\n",[88,118,120,123,125,127,130],{"class":90,"line":119},2,[88,121,122],{"class":102},"     srcset",[88,124,106],{"class":94},[88,126,109],{"class":94},[88,128,129],{"class":112},"small.jpg 500w, medium.jpg 1000w, large.jpg 2000w",[88,131,116],{"class":94},[88,133,135,138,140,142,145,147],{"class":90,"line":134},3,[88,136,137],{"class":102},"     alt",[88,139,106],{"class":94},[88,141,109],{"class":94},[88,143,144],{"class":112},"響應式圖片",[88,146,109],{"class":94},[88,148,149],{"class":94},">\n",[27,151,153],{"id":152},"_3-懶載入螢幕外圖片","3. 懶載入螢幕外圖片",[15,155,156],{},"懶載入會延遲載入當前不在視口（螢幕可見部分）中的圖片。這極大地改善了「初始頁面載入」時間。",[15,158,159],{},"大多數現代瀏覽器都支援原生懶載入：",[79,161,163],{"className":81,"code":162,"language":83,"meta":84,"style":84},"\u003Cimg src=\"image.jpg\" loading=\"lazy\" alt=\"懶載入圖片\">\n",[63,164,165],{"__ignoreMap":84},[88,166,167,169,171,173,175,177,180,182,185,187,189,192,194,197,199,201,204,206],{"class":90,"line":91},[88,168,95],{"class":94},[88,170,99],{"class":98},[88,172,103],{"class":102},[88,174,106],{"class":94},[88,176,109],{"class":94},[88,178,179],{"class":112},"image.jpg",[88,181,109],{"class":94},[88,183,184],{"class":102}," loading",[88,186,106],{"class":94},[88,188,109],{"class":94},[88,190,191],{"class":112},"lazy",[88,193,109],{"class":94},[88,195,196],{"class":102}," alt",[88,198,106],{"class":94},[88,200,109],{"class":94},[88,202,203],{"class":112},"懶載入圖片",[88,205,109],{"class":94},[88,207,149],{"class":94},[27,209,211],{"id":210},"_4-壓縮壓縮再壓縮","4. 壓縮，壓縮，再壓縮！",[15,213,214],{},"切勿直接從相機或圖庫網站上傳原始圖片。它們包含中繼資料和過高的品質設定，會使檔案大小膨脹。",[35,216,217,223],{},[38,218,219,222],{},[22,220,221],{},"目標："," 80-85% 的品質。",[38,224,225,228],{},[22,226,227],{},"移除："," EXIF 數據（GPS、相機型號）以節省空間。",[15,230,231,232,237],{},"在上傳之前，使用像我們的 ",[233,234,236],"a",{"href":235},"/image/converter","圖片轉換器"," 這樣的工具來處理您的圖片。",[27,239,241],{"id":240},"_5-別忘了輔助功能替代文字","5. 別忘了輔助功能（替代文字）",[15,243,244,245,248],{},"搜尋引擎（如 Google）和螢幕閱讀器（用於視障使用者）無法「看到」圖片。它們依賴於 ",[63,246,247],{},"alt"," 屬性。",[35,250,251,260],{},[38,252,253,256,257],{},[22,254,255],{},"差："," ",[63,258,259],{},"alt=\"image1.jpg\"",[38,261,262,256,265],{},[22,263,264],{},"好：",[63,266,267],{},"alt=\"一隻黃金獵犬幼犬在草地上玩耍\"",[15,269,270],{},"正確的替代文字可以改善您的 SEO，並使每個人都能訪問您的網站。",[27,272,273],{"id":273},"總結",[15,275,276],{},"遵循這 5 條規則，您將確保您的網站快速、易於訪問，並為現代網路做好準備。",[278,279,280,287,295,304,310],"ol",{},[38,281,282,283,286],{},"使用 ",[22,284,285],{},"AVIF/WebP"," 格式。",[38,288,282,289,291,292,294],{},[22,290,144],{}," (",[63,293,76],{},")。",[38,296,297,298,291,301,294],{},"啟用 ",[22,299,300],{},"懶載入",[63,302,303],{},"loading=\"lazy\"",[38,305,306,309],{},[22,307,308],{},"壓縮"," 每一張圖片。",[38,311,312,313,25],{},"始終添加描述性的 ",[22,314,315],{},"替代文字",[317,318,319],"style",{},"html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":84,"searchDepth":119,"depth":119,"links":321},[322,323,324,325,326,327],{"id":29,"depth":119,"text":30},{"id":69,"depth":119,"text":70},{"id":152,"depth":119,"text":153},{"id":210,"depth":119,"text":211},{"id":240,"depth":119,"text":241},{"id":273,"depth":119,"text":273},"Web 開發","2026-01-25T00:00:00.000Z","確保您的網站載入迅速且外觀精美，遵循這 5 個基本的圖片優化最佳實踐。了解格式、懶載入和響應式尺寸。","md",false,"/blog/image-best-practices.jpg",{},true,"/blog/zh-tw/image-best-practices",7,{"title":5,"description":330},"blog/zh-TW/image-best-practices",[341,342,300,343,344],"最佳實踐","效能","SEO","優化",[346],"/image","dgA2sly9eixXQMpO-Q1wiCFAVOL8XPqmi7Z54eA9czs",[],1781687152092]