For website designing companies and SEO specialists, this becomes a must-do task for them to deliver the optimized and search engine friendly web content to the users and search engine crawlers.
Here’s a short guide to understand how search crawlers read Js and what the best practices are to fix the Js bugs!
Google bots/crawlers process the Js in 3 main steps:
When Google fetches a URL by making a HTTP request, it first goes through the robots.txt file and checks if you allow crawling for that URL or not. It skips that URL if disallowed and parses the other URLs in the “href” attribute of HTML code and add them to the crawling queue.
Googlebot queues all the pages for rendering unless instructed by robots.txt to not to index them. Once the Googlebot’s resources are allowed, the browser renders the page and executes its Js code. The bots parses the HTML links again for crawling and to index the page.
Unique, descriptive titles and well explained meta descriptions within a character limit helps users to search quickly the best suited and relevant result for their goals. Some practices to optimize the page title:
For meta descriptions, make sure the page descriptions are unique, descriptive and high-quality.
Googlebot uses HTTP status codes if it encounters something wrong while crawling the webpage. You should use the meaningful status code to Googlebot if the page should not be crawled or indexed like 404 code for page not found, 401 if page is under construction (need admin access), 301/302 if the page is shifted to the new URL, 5xx if there’s something went wrong on server side.
Images sometimes weigh costly in terms of bandwidth and website performance. This can have a negative impact on the website users. It can take a longer time to load & the visitors have to wait before they can access the content of your website. This can make them impatient and force to leave your website. The best strategy is to use lazy-loaded content.
Lazy loading or on-demand loading is an optimization technique for the online content, be it a website or a web app. Instead of loading the entire web page and rendering it to the user in one go as in bulk loading, the concept of lazy loading follows the strategy in loading only the required section and delays the remaining, until it is needed by the user.
This can improve the user experience but implementing a lazy load can make the code heavy & a bit complicated. It may also affect the website’s ranking on search engines sometimes, due to improper indexing of the unloaded content. So try to use lazy load content only when needed.
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