> For the complete documentation index, see [llms.txt](https://learn.justfont.com/pocketbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.justfont.com/pocketbook/applications/pai-ban-ying-yong/legibility.md).

# 易辨性 Legibility

快速準確辨認與區分個別字符難易程度

易辨性又譯作「可辨性」、「視認性」、「文字識別度、等，指快速、正確地辨認與識別各個不同字符的難易程度，例如：是否能快速區分一套字型中的「大寫 I、小寫 i、數字 1」等造形相近的字符。主要影響因素包含字形輪廓、開口大小、筆畫粗細等造形差異。

在路標、指示牌等須要瞬間辨識文字的情境中，特別需要考量字型的易辨性。

<figure><img src="https://3259106458-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LUcWrsidcNm966gx4au%2Fuploads%2FpJ25tWHh7RQR3AoFWTuH%2F2026_%E5%AD%97%E9%AB%94%E5%8F%A3%E8%A2%8B%E6%9B%B8%E5%9C%96%E7%89%87_39-1%E6%98%93%E8%BE%A8%E6%80%A7.png?alt=media&amp;token=88f536a6-e846-493c-8465-22dc0b313ccf" alt=""><figcaption><p>在需要瞬間辨識文字的情境中，須考量字型易辨性</p></figcaption></figure>

![易辨性差異](https://3259106458-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LUcWrsidcNm966gx4au%2Fuploads%2FqaD7Y6Oer9U7w3Ffn8Z8%2F2026_%E5%AD%97%E9%AB%94%E5%8F%A3%E8%A2%8B%E6%9B%B8%E5%9C%96%E7%89%87_39-2%E6%98%93%E8%BE%A8%E6%80%A7.png?alt=media\&token=3cb1cf49-f145-40f1-a2c3-bf16191b2a5e)

<figure><img src="https://3259106458-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LUcWrsidcNm966gx4au%2Fuploads%2Fog8NMieiiZddQbU6f9ZH%2F2026_%E5%AD%97%E9%AB%94%E5%8F%A3%E8%A2%8B%E6%9B%B8%E5%9C%96%E7%89%87_39-3%E6%98%93%E8%BE%A8%E6%80%A7.png?alt=media&amp;token=19f02855-8de3-488b-856f-f7e61ad19d0a" alt=""><figcaption><p>易辨性差異</p></figcaption></figure>

#### 關鍵字：[**#字身與字面**](/pocketbook/type-design/she-ji-guan-nian/body-frame-and-surface-frame.md) [#骨架](/pocketbook/type-design/she-ji-guan-nian/skeleton.md) [**#主筆、副筆**](/pocketbook/type-design/she-ji-guan-nian/stroke-hierarchy.md)

**延伸閱讀：**

[英文UI字型大評比：視認性測試](https://blog.justfont.com/2013/01/ui-font-testing-legibilit/?utm_source=gitbook\&utm_medium=legibility\&utm_campaign=ui-font-testing-legibilit\&utm_id=0715)

[英文UI字型大評比：易讀性測試](https://blog.justfont.com/2013/01/ui-font-testing-readabilit/?utm_source=gitbook\&utm_medium=legibility\&utm_campaign=ui-font-testing-readability\&utm_id=0715)