Content SEO

The Complete On-Page SEO Checklist For 2021 – Adlogue

On-Page SEO Checklist

As we all know Search Engine Optimization is a crucial part of any Digital Marketing Strategy or is the primary source of traffic for most of the websites today from small to large.

Along with strong backlink profile & Content Marketing, it’s important to optimize your website, E-store or Blog to be search engine friendly.

The below list includes all the factors as per current trends which makes your website Search Engine Friendly and supportive resources to get started.

On-Page Optimization

Meta tags ( Title, Description & Keywords)

The most basic on-page SEO elements which have to be updated on all pages if you have unique keywords or titles or Homepage is sufficient. where the title has to be with 50–60 characters & description of 300 character and keywords not more than 4.

(Explain what is your page is about) this also helps you to achieve better organic Click Through Rate based on the Google’s rank brain technology.

Heading Tags ( H1, H2 & H3)

These heading tags give readers an idea of the following content mainly if you have long posts or articles on your blogs and these headings guide google bots to grasp the topics of your post.

Alt tags

Google bots or the spiders can’t view or analyze images, hence we use Alt Tags to make Google understand what the image is about, this helps your image to be found on google image search, which can be beneficial for business in Fashion, Boutiques or E-commerce etc.

Image optimization

80% of the websites load slowly due to large images or other media files you can resize, compress these media files which will, in turn, increase the speed.

Google Website Speed Test

The Avg speed should be around 5 sec and below.

Test Your Website Speed

Broken Links & Underscore Checking

A broken link a.k.a The DEAD link, These links which have left this world a long time ago, jokes apart. The links of a web page which no longer exist due to several reasons.

  • An invalid URL was entered.
  • The destination URL was removed causing 404 error
  • The destination link no longer exists or permanently moved or maybe the user is behind a firewall etc.

You can use these tools to identify the DEAD “Links” and fix them.


External Linking

This is something which was made famous by “Wikipedia” as you can see I have mentioned some tools which are used to identify broken links above, This helps readers with relevant, fast & useful content for a continued experience.

Internal Linking

Internal linking helps users to get more relevant information in a continuous manner, technically if some of your internal pages have fewer visits or above ranking, you can link these internal pages to popular pages channeling you visitors to less visited pages.

301, 302, 404, 500 Errors

These are different errors used for various functions, like temporary or permanent redirects.

Complete guide on various redirecting errors.

Minimum of 100 words on pages

Have a minimum of 100 to 150 words on all pages, along with relevant keywords & phrases. yoast SEO suggests a minimum of 100 words which makes the page search engine friendly.

Keyword Density Check & Keyword Optimization

Avoid using too many keywords in the content. 1 to 2 keywords per 100 words will be more than enough and that number is ideal.

Tools to check keywords Density,

Keyword Semantics

As mentioned above you can integrate keywords in the content but not many, to make more relevant and reader-friendly use Semantics, find relevant words like synonyms, long tail key phrases instead of direct keywords.


The robots.txt is a simple text file placed on your website which guides the web crawlers like Googlebot which file to access and which to not.

More about Robots.txt


A sitemap is a list of pages available on your website accessible to web crawlers and users.

Which are usually generated as an XML file, all these pages are generally organized in hierarchical orders. This lets the crawlers to analyze the complete website and help users to locate an individual page on the website.

Url Canonicalization


All these domains are same, but search engine bots treat them as different properties, hence URL canonicalization helps you to set a URL version as preferred through your web hosting providers, Google Search Console and through 301 redirects. This tells the search bots which domain version is preferred so that traffic will not be affected.

W3C Validation

Let me put it in a simple way instead of using the industry jargons,

W3C stands for World Wide Web Consortium which is a recognized standards organization for all the world wide web. Founded by Tim Berners-Lee run by full-time staff who develop and maintain web standards.

You can validate your website through this tool:


Google Analytics

A free analytics tool provided by Google once integrated this tool gives data like Visits, Bounce rate, # of pages viewed, Geography, devices etc. helps in tracking traffic & helps in making marketing strategies.

Google Search Console / Bing Webmaster tool

This tool by Google lets you know if there are any issues with the website in terms of crawl errors, redirected errors etc, which will help you to optimize your website better.

Wake up it’s 2021, Mobile Rendering & Responsive Designs.

Google has already announced Mobile First Index, it’s nothing but the mobile version of your website will be the primary point for google bots to analyze and determine rankings.

Check if your website is mobile friendly

Mobile Friendly Website Testing 

Permalink structure

This basically applies to WordPress posts including other content management systems every post you create will have a link some like this.


“” instead use custom links or post names to create reader and search friendly URLs.

Schema Implementation  / Structured Data Markup

Here is an explained article on

Site structure

Site structure plays a crucial role in increased user engagement, websites built with strong flow based on categories, products and sub-products etc. always use bread crumbs which will help users to return back to any desired page on the website.

SSL Certificate

Do you accept payments on your website? If yes this is the first thing you have to implement on your website. After all, security comes first to you and to your customers.

User Experience / Conversions

  • Accelerated Mobile Pages (AMP)

  • Call to Actions (CTA)
  • Facebook Accelerated Pages

  • Live Chat
  • Social Media Integrations

Hope you find this article helpful in making your website user & search engine friendly, Kindly do let me know your thoughts in comments.

One reply on “The Complete On-Page SEO Checklist For 2021 – Adlogue”

I read all the factors and I will surely use all the factors for ranking my site. Such an informative and valuable blog about on-page SEO. thanks.

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