On-Page SEO Checklist 2021 Explained In Details

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  • Post last modified:July 2021

If you look at SEO practices carefully, you will notice that off-page activities are more or less the same form long time. Link building was there before and it is still there, keyword research, content research, competitive research are all more or less the same. But something keeps increasing in On-Page SEO activities.

Due to all the AI and Machine Learning features added to the search engine, all of them increase on-page activities. for example, Schema data was not a part of on-page activities until a few years ago. But now that in itself is a big thing.

If you want online branding then schema data has to be implemented properly. So today we will see the detailed Checklist of On-Page SEO.

Crawling Checkup

Search engine bots visit the website which is called crawling. It is from this crawling process that the search engines get to know what content is on this website, how important it is, and which type of users should be shown, should be shown, or should not be shown.

Crawling is the first step of search engine optimization. If your website is not crawling properly then it will not be indexed and will not rank. Maybe some pages of your website are crawling properly, due to which you feel that everything is going well. But many important pages are not crawlable, then you can solve these problems only after a crawling checkup.

In Crawling checkup, you check the robots.txt, .htaccess file and see if there is any URL, File Folder block, which is blocking your pages. Google Search Console gives you information about crawling errors which you can see in Search Console.

Indexing Checkup

After crawling your website, search engines index its pages. One thing that a lot of people forget or ignore is that indexing in search engines is not a basic human right that if you are 18 years old then you can go to vote, if the website has been made then Google or Any search engine will have to index it.

No search engine ever indexes all the pages. As an SEO, your job is to get as many useful pages indexed in search engines as you can. In this indexing checkup, we see which of our pages have been indexed, which have not been indexed, and why.

So that you can index those pages by solving all those problems.

Sitemap Checkup

Many people miss the sitemap checkup. A sitemap can also create and remove problems of both crawling and indexing. If you have a page that has not got an internal link from any other page and it has not got a place in the sitemap, then neither that page will be crawled nor indexed.

So after crawling and indexing checkup, check the sitemap to see that your sitemap has not been created, the first thing to see, is it accessible? Opening Properly? Submitted in Search Console or not? And does it have links to all the important pages or not?

Mobile Friendliness Test

Mobile Friendliness is not an optional thing, it is very important because more than 90% of the users come from mobile. Mostly the website is crawled by Google smartphone bot. Vice will be indexed as your website will be visible on mobile.

If any text, image, header, the footer is not visible on mobile then Google will not even index it. Because it is not visible to the search engines. So definitely test the mobile-friendliness of all your pages. Also, keep in mind that there should not be any significant difference between mobile and desktop content.

You may not show different content to mobile visitors. The design may be different but the content should not be different.

Canonical Checkup

Canonical tags tell the search engine that you want to rank only one of the two pages in which they are viewing the same content.

URL Checkup

URL is the address of your pages and if the address is wrong then no one will get it. It is important for the URL to be SEO friendly, it should not contain random numbers, random characters, and symbols in the URL.

Many tools give the option to analyze the URL, but if your website is small, it is only 200-300 pages, then you can analyze it using excel.

Meta Data Checkup

Metadata are added in the form of tags in the header section and they give important information to the search engines. Many things come in Metadata like

  • Meta Title – This tells the title of the page to the search engine.
  • Meta Description – This tells the description of your page to the search engines.
  • Meta Robots Tag – These give important information to the search engine, such as index, no-index, archive, whether or not snippets are visible, how long snippets are to be seen, etc.
  • OG Tags – That is, Open Graph Tags, they manage the preview of information while sharing it on Facebook. If someone is sharing any of your pages on Facebook, then you would like the correct preview, title, and description of your page to go to Facebook. You should optimize them.
  • Twitter Cards – Twitter cards work like OG tags but for Twitter

You have to check all these data on every page, for this, you can also use many tools. Like Semrush, Ahrefs.

Header Tags

Properly implement H1 – H2 on your page, don’t use more than one H1 on one page. The main Keyword of your page should be available in H1. Keep this in mind.

Header tags are not a direct ranking factor, but headers help to format the content of a page correctly. The page becomes easy to read, understand and this directly means that the user experience becomes better.

Good user experience is a ranking factor. So check the header tag thoroughly.


The most important element of an on-page is the content itself. This is the content of the page for which we, you, and everyone work so hard. If there are grammatical mistakes in the content, then it will not rank properly, because Google is not intuitive. If there is a spelling mistake, grammar is wrong, then the meaning will be misinterpreted and Google will not know what the content is about.

Analyze your content, there is no need to put lots of keywords in the post. Naturally, watch your page read like a visitor. Use your keyword in the first paragraph of your page. This is a strong indicator of what your page is about or what its topic is.

Images Checkup

Are your images suitable for indexing? Are your images optimized for fast download? Is it in the correct format? Apart from this, focus on the alt attribute of your images, fix it.

Which text is being used near the images on the page can also be an important ranking factor. Images should be used where text related to it is present.

Internal Linking

An internal link is part of our pages and it will be part of on-page SEO only. There is no fixed number of internal links as to how many links should be on a page. But certain points must be focused on,

  • Do not link two different pages on the same page using an anchor text, this confuses the search engines.
  • Do not link to the same page twice
  • Keep anchor text relevant
  • Place the Links Naturally

Schema Data

Schema data makes your web page easier for search engines to understand. If search engines understand your page well, then they will rank better. You can use more than one type of schema data on a single page.

The only condition is that whatever you are adding to the schema data in the page, that content should also be visible to the human visitors.

Page Speed

The speed of your pages is also a ranking factor. Now from August, Google will start counting page speed in ranking signals. So you optimize your pages to load fast.

SEO is a practical field, if you follow at least 8 points well, then you will get very good results. But if you can make a little effort on all these points, then it will be good.

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