In the vast, interconnected ecosystem of the web, your website is just one part of a much larger whole. External links are the bridges that connect your site to the rest of that ecosystem. They come in two forms: **outbound links** (links from your site to others) and **inbound links** (or backlinks, from other sites to yours). A smart external linking strategy is crucial for establishing your site’s authority, providing value to your users, and building a strong reputation with search engines.
Think of the web as a giant city. Your website is your own personal shop. Linking out to other reputable shops shows that you are a helpful, knowledgeable member of the community. Earning links from other well-respected shops is a powerful endorsement of your own quality. For Google’s official guidance, see their documentation on how Google uses links.
A complete external linking strategy involves carefully managing the links you make to other sites. The following guides provide actionable advice for common issues related to your outbound links.

Learn what external HTML is and why it’s the foundation of every website. Discover the benefits of well-structured HTML for both SEO and web development.
Learn what external images and hotlinking are, and why they can be a major drain on your server resources. Discover how to protect your images and prevent hotlinking.
Learn what external CSS is and why it’s the preferred method for styling modern websites. Discover the benefits for both SEO and web development.
Learn what external JavaScript is and why it’s the preferred method for adding interactivity to modern websites. Discover the benefits for both SEO and web development.
Learn the best practices for linking to external PDFs and how to optimize your own PDFs for search engines.
Learn when and how to link to external resources to provide more value to your users and improve your SEO.
For another excellent resource on this topic, check out this guide to link building from Moz.

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