Technical SEO for Developers: 7 Checks to Make Before Launching a Website

Technical SEO encompasses several critical factors that can influence a website's discoverability and search engine rankings. For developers, paying attention to these technical aspects during development can prevent common SEO pitfalls. This article outlines seven checks that developers should undertake before launching a website to ensure optimal SEO performance.

Firstly, it's essential to examine the response from the server. Developers should inspect the server's response headers and HTML content using tools like curl. This involves checking the HTTP status code, ensuring important content is present, and verifying that redirects lead to the correct destination. For JavaScript-heavy applications, it's crucial to test representative pages rather than assuming that the homepage alone is SEO-friendly.

Secondly, page titles play a significant role in SEO. Each page should have a unique title that clearly describes its content. Generic titles should be avoided as they fail to convey the page's purpose to both users and search engines. In applications built with frameworks like React, it's advisable to dynamically generate page titles based on page-specific data. Additionally, developers should ensure that metadata and other important information are accurately reflected in the server's HTML response.

Thirdly, links within a website must function correctly. While client-side routing is common in modern web development, it's important to maintain standard anchor elements for navigation. Clickable elements that only trigger JavaScript should be avoided as they can hinder accessibility and crawlability. Developers should verify that important pages are reachable through internal links, links have valid destinations, and that users can navigate using keyboard commands.

Ensuring a robust link structure not only aids users but also assists search engine crawlers in discovering and indexing the site's content.

Fourthly, using the correct HTTP status codes is vital. These codes provide crucial information about the outcome of a request, such as a successful request (200 OK), a permanently moved resource (301 Moved Permanently), a missing resource (404 Not Found), or an error on the server (500 Internal Server Error). A common issue to address is a soft 404, which occurs when a page displays a "not found" message but returns a 200 OK status.

In such cases, search engines may struggle to distinguish between a real page and a missing one. Developers should ensure that permanently moved pages receive a 404 response and that moved resources use suitable redirects. Redirects should be used sparingly and only when appropriate, as improper use can confuse both users and search engines.

Fifthly, creating and reviewing a sitemap is an important SEO check. A sitemap helps search engines discover important pages on a website. The robots.txt file, on the other hand, provides instructions for crawlers about which paths they may or may not access. While sitemaps and robots.txt serve different purposes, both should be carefully crafted to reflect the website's actual structure.

Developers should avoid overly restrictive disallow rules in robots.txt, as these can inadvertently block important content. It's also crucial to remember that robots.txt is not a secure method for protecting sensitive content, and proper authentication mechanisms should be implemented instead.

In summary, these seven technical SEO checks can significantly enhance a website's SEO performance before launch. By ensuring the server returns meaningful content, implementing proper titles, navigation, and status codes, and maintaining a well-structured sitemap, developers can lay a solid foundation for a search engine-friendly website.