Link juice is an SEO term that describes the value or authority transferred from one webpage to another through hyperlinks. When a high-quality page links to your site, it's essentially vouching for you — passing along some of its ranking power. That's link juice flowing to your page.
Here's a concrete example. You're reading a blog post that links to a helpful resource on another website. When you click that link, you're not the only one following it — search engines are too. Google sees that link as a vote of confidence. If the linking page has high authority, some of that authority "flows" to the linked page, boosting its SEO rankings. The more quality links pointing to a page, the more link juice it receives.
Link juice is crucial for both internal and external linking strategies. When you link from one product page to another on your own site, you're distributing link juice internally and helping those pages rank better. The key is that not all links pass equal juice — a link from a high-authority site like The New York Times carries far more weight than a link from a new, unknown blog. Focus on earning quality backlinks from reputable sites to maximize the link juice flowing to your pages.