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HTML & JS Indexation | Onely

HTML & JS Indexation | Onely

Short description : HTML & JS INDEXATION

Use Onely’s SEO toolbox to discover JavaScript-generated elements on your site.

Long Description : HTML & JS INDEXATION

Description Onely


JavaScript is very present today and statistics estimate that  73% of websites rely on JavaScript for important functionality. However, Google’s indexing of JavaScript is one of the most talked about topics in the SEO community, as the search engine does not yet properly process this code. It is then necessary to check from time to time if Google indexes your various resources, whether it is HTML, CSS or JavaScript. It is also essential to see how well your pages render content when visitors access it. In order to check all these aspects on your pages, we suggest you use Onely, a free and very fast tool. Through this description, we discover this tool and all the features it offers to improve the way your pages are presented to visitors.

What is Onely?

Onely7 is a toolkit that offers several features, including What Would JavaScript Do? (WWJD), The Google Indexing Forecast (TGIF) and Too Long; Didn’t Render (TL;DR) WWJD identifies elements of your web pages that are generated by JavaScript and provides a multifaceted insight into how a page will perform without any JavaScript enabled. Page JavaScript active Description Onely Indeed, JavaScript is the source of most of the front-end functionality and content of modern websites and its popularity is only growing. But this trend is causing serious headaches for SEOs, because Google doesn’t yet handle JavaScript perfectly. In the presence of JavaScript on a page, the search engine must go through additional steps to render the content, hence the interest of the second tool. Too Long; Didn’t Render is a tool that calculates the cost of rendering a web page from 0 to 100. Rendering a web page refers to the process of transforming HTML, CSS, and JavaScript code into an interactive page that visitors to the website expect to see by clicking on a link. All pages of a website are designed with users in mind. And you certainly don’t want your page visitors to experience one of the most common rendering issues, like the dreaded Flash. Visite par mois sur Onely×530. png In other words, Onely will allow you to see JavaScript generated elements on your pages, how your pages behave when JavaScript elements are not loaded. It also allows you to see the cost of rendering, in particular the time required for these elements to load. Using the TGIF feature, you will see Google’s indexing predictions about your site. That is, if your HTML and JS codes are indexed by Google and how the current state of your website affects your SEO. Note that all of these features are also available specifically for the mobile and desktop versions of your web pages.

How to use Onely WWJD to determine the elements generated by JavaScript on your page?

Onely WWJD is a very simple tool to use, once on the homepage, select the WWJD part to start. Then enter the URL of the page whose elements you want to check and click Submit to start generating your reports. Page Onely WWJD

What does WWJD show?

WWJD creates a report divided into four categories: Screenshot : This report is a visual comparison between a screenshot of the page with JavaScript enabled and a screenshot of the same page with JavaScript disabled. Capture d ecran de JavaScript desactive JavaScript desactive HTML : This report shows the source code and the rendered DOM, allowing you to compare the two. Meta : This section compares tags (including title, description, meta bots, and canonical tags) before and after rendering JavaScript. Links : This option shows you all the links that have been injected into the document by JavaScript.

How to interpret the reports provided by Onely WWJD?

It is worth starting with a visual comparison of the generated screenshots. This technique is the easiest way to check which page elements are affected by JavaScript. Then, thanks to the Meta and Links tabs, you will be able to appreciate the differences that were not necessarily visible on the screenshots. One can check if the title or meta descriptions of the page are influenced by JavaScript outside of one’s control and one can see if JavaScript injects links that are not in regular HTML. Regarding meta tags, the tool always displays title, meta description, robots and canonical tags. Other tags are only displayed if a difference is detected between the rendered and non-rendered versions. The HTML report allows you to take a closer look at issues by viewing the source code and comparing it to the DOM rendered by the browser. Rapport HTML description Onely If there are significant discrepancies between the rendered and unrendered version of your page, it’s quite possible that your users won’t be able to see some of your content. This is because you can never be sure when your JavaScript content is being picked up by search engines.

How to use Onely TL;DR to determine the cost of rendering your pages?

Like the WWJD feature, this feature is available on the home page. When you access the tool, enter the URL of the page whose rendering cost you are looking to measure. Fonctionnement Onely TL DR

How does TL;DR work?

Since Onely has a lot of data regarding web performance, it uses its own metrics to show what your rendering cost looks like. The cost gauge represents the relative cost of rendering a page. Jauge de cout Description Onely The higher the score, the more expensive the rendering. Pages with high rendering cost should benefit from technical SEO services to improve their performance on the web.

How to use TL;DR differently?

You could compare multiple pages on your website. Is your home page consuming more resources than your product page? In the same way, you can get an overview of your site compared to the competition. The tool will also allow you to compare two pages in terms of rendering cost, as well as compare a page’s score to the industry average. In short, Onely will allow you to:
  • See Google’s indexation forecasts for your HTML, CSS and JavaScript codes;
  • Compare the elements of your web page that are injected by JavaScript;
  • Calculate the cost of rendering your website.
By using this tool, you will be able to improve the way your site presents itself to visitors and its responsiveness time.




Onely is an agency run by Bartosz Goralewicz, specializing in technical SEO. Its main mission is to make websites more welcoming and profitable through good optimization. Onely has a team of more than 30 technical SEO experts. Their only motivation: the satisfaction of their customers.  To do this, Onely offers transparent services with convincing results.  The specialties of the Onely agency are, among others:
  • Technical referencing;
  • Migration and redesign of websites;
  • JavaScript referencing;
  • Web Performance and Core Web Vitals;
  • Link auditing.
The Onely agency provides its services to several large companies as well as individuals around the world. It also garners enough positive reviews from many users. Many big brands such as Credit Agricole, ThinkMarket, Evo and many others highly recommend the services of this agency.




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Alexandre MAROTEL

Founder of the SEO agency Twaino, Alexandre Marotel is passionate about SEO and generating traffic on the internet. He is the author of numerous publications, and has a Youtube channel which aims to help entrepreneurs create their websites and be better referenced in Google.