📅 最后修改于: 2023-12-03 14:44:45.052000 🧑 作者: Mango
When it comes to search engine optimization (SEO), there are two important attributes that programmers need to be aware of: "noindex" and "nofollow". These attributes tell search engines whether or not to index or follow certain pages on your website. In this guide, we'll take a closer look at what "noindex nofollow" means and how it can affect your website's SEO.
"Noindex nofollow" is a combination of two meta tags that can be added to the HTML code of a webpage. These tags tell search engine robots to not index or follow the links on a specific page. Here's what each attribute means:
noindex: This attribute instructs search engine robots to not index the current page. In other words, the content on this page will not show up in search results.
nofollow: This attribute tells search engine robots to not follow any links on the current page. This means that search engines won't crawl through any links on the page and won't give any link juice to other pages.
There are several reasons why you might want to use "noindex nofollow" on certain pages of your website. Here are some examples:
Duplicate content: If you have multiple pages on your website with similar content, using "noindex nofollow" on some of these pages can prevent search engines from penalizing you for having duplicate content.
Temporary pages: If you have pages on your website that are only meant to be temporary (e.g. holiday sale pages), you might want to use "noindex nofollow" so that these pages don't show up in search results after the promotion is over.
Paid or sponsored links: If you have paid or sponsored links on your website, using "nofollow" can prevent search engines from penalizing you for link schemes or unnatural link building.
Private or confidential pages: If you have pages on your website that are only accessible to certain users (e.g. login pages), using "noindex nofollow" can prevent these pages from showing up in search results.
Implementing "noindex nofollow" on your webpages is relatively straightforward. Here's how you can add these attributes to your HTML code:
<head>
<meta name="robots" content="noindex, nofollow">
</head>
This code should be placed in the head section of your webpage, between the <head> and </head> tags. You can also use these attributes separately if you only want to use "noindex" or "nofollow". Here are some examples:
<!-- Noindex only -->
<head>
<meta name="robots" content="noindex">
</head>
<!-- Nofollow only -->
<head>
<meta name="robots" content="nofollow">
</head>
Using "noindex nofollow" can be a useful tool for controlling how search engines crawl and index your website. By using these meta tags strategically, you can prevent duplicate content, avoid penalties for unnatural link building, and keep private or confidential pages hidden from search results. Remember, however, that using "noindex nofollow" on too many pages can negatively impact your website's overall SEO, so use these attributes wisely.