為什麼我的HTML圖像未顯示？

首先檢查src屬性路徑是否正確，確保相對路徑或絕對路徑與HTML文件位置匹配；2. 核實文件名和擴展名是否拼寫正確且區分大小寫；3. 確認圖像文件實際存在於指定目錄中；4. 使用合適的alt屬性並確保圖像格式為瀏覽器廣泛支持的.jpg、.png、.gif或.webp；5. 排除瀏覽器緩存問題，嘗試強制刷新或直接訪問圖像URL；6. 檢查服務器權限設置，確保文件可被讀取且未被屏蔽；7. 驗證img標籤語法正確，包含正確的引號和屬性順序，最終通過瀏覽器開發者工具排查404錯誤或語法問題以確保圖像正常顯示。

Your HTML image might not be showing up for several common reasons. Let's break down the most likely causes and how to fix them.

✅ 1. Check the src attribute path

The most common issue is an incorrect file path in the src attribute.

• Relative vs. Absolute Paths : Make sure the path to your image is correct relative to your HTML file.

 <!-- If the image is in the same folder -->
<img src="/static/imghw/default1.png"  data-src="photo.jpg"  class="lazy" alt="My Photo">

<!-- If the image is in an &#39;images&#39; folder -->
<img src="/static/imghw/default1.png"  data-src="images/photo.jpg"  class="lazy" alt="My Photo">

<!-- If the image is one level up -->
<img src="/static/imghw/default1.png"  data-src="../photo.jpg"  class="lazy" alt="My Photo">

➡️ Tip : Open your browser's developer tools (F12), go to the "Console" or "Network" tab, and see if there's a 404 error for the image — this means the path is wrong.

✅ 2. Verify the file name and extension

Typos in the file name or extension are easy to miss.

❌ Wrong:

 <img src="/static/imghw/default1.png"  data-src="myimage.png"  class="lazy" alt="為什麼我的HTML圖像未顯示？"> <!-- But your file is actually myimage.jpg -->

✅ Correct:

 <img src="/static/imghw/default1.png"  data-src="myimage.jpg"  class="lazy" alt="為什麼我的HTML圖像未顯示？">

Also check for case sensitivity — on some servers (like Linux), Photo.jpg is different from photo.jpg .

✅ 3. Make sure the image file is in the right location

Even if the path is correct, the file might not be uploaded or saved where you think it is.

• Double-check your project folder structure.
• If you're using a web server, make sure you've uploaded the image file to the server.

? Example:

 project-folder/
├── index.html
└── images/
    └── logo.png

Then in HTML:

 <img src="/static/imghw/default1.png"  data-src="images/logo.png"  class="lazy" alt="為什麼我的HTML圖像未顯示？">

✅ 4. Use a proper alt attribute (and check image format)

While alt doesn't affect display, it helps with debugging.

• If the image doesn't load, the alt text will show instead.
• Use widely supported formats: .jpg , .png , .gif , .webp .

 <img src="/static/imghw/default1.png"  data-src="cat.jpg"  class="lazy" alt="A cute cat">

If you're using a rare format (like .bmp or .tiff ), some browsers may not support it.

✅ 5. Check for browser or cache issues

Sometimes the browser caches a broken image.

➡️ Try:

• Hard refresh: Ctrl F5 (Windows) or Cmd Shift R (Mac)
• Open the image URL directly in a new tab (copy the src link) — if it doesn't load, the path or server is the issue.

✅ 6. Server or file permissions

If you're on a live website:

• The image file might not have proper read permissions.
• The server might block certain file types.

This is less common for personal projects but can happen on shared hosting.

✅ 7. Syntax errors in the <img src="/static/imghw/default1.png" data-src="photo.jpg" class="lazy" alt="為什麼我的HTML圖像未顯示？" > tag

Make sure your HTML is well-formed.

❌ Broken:

 <img src="/static/imghw/default1.png"  data-src="photo.jpg"  class="lazy"lazy"  alt="My photo">

✅ Correct:

 <img src="/static/imghw/default1.png"  data-src="photo.jpg"  class="lazy" alt="My photo">

Remember: <img alt="為什麼我的HTML圖像未顯示？" > is self-closing and needs quotes around attribute values.

Quick Checklist:

• [ ] Is the file path correct (relative/absolute)?
• [ ] Is the file name and extension spelled right?
• [ ] Is the image actually in that folder?
• [ ] Does the image open in a browser when you go to its direct URL?
• [ ] Are there any errors in the browser console?

Basically, most image issues come down to paths or typos. Double-check those first — it's usually the culprit.

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