Difference Between Crawling and Indexing in SEO – Complete Beginner’s Guide

When you have a website or conduct an online business, your ultimate aim is pretty much the same – you want your pages to show up on Google. But before that, your content has to pass through two major stages: crawling and indexing in SEO. A lot of beginners just concentrate on keywords and writing content without realising the actual process of what is crawling and indexing in SEO and how Google actually finds and stores their pages. Hence, this is the starting point for most issues related to SEO. The quality of your page may be top-notch, but if it is not properly crawled or indexed, it will never come up in the search results. This guide will make you understand the crawling and indexing concepts simply, their functioning, and the difference between crawling and indexing, and also the reason behind their importance for search visibility that would last for years.

What is Crawling in SEO?

Crawling is basically a search engine's method of sending out its automatic bots to explore your site and see your content. These bots can jump from one page to another through links and gather information regarding your content so that the search engines can precisely figure out what your site is all about.

What is Indexing in SEO?

The next step after crawling is indexing. What is indexing in SEO? Google has to sort the data it collected and save it in a kind of digital file cabinet. To put it another way, when a page gets indexed, it also gets stored in Google's database. This process is commonly referred to as what is Google indexing in SEO, so that the information can come up again when users search for a topic related to that page. An unindexed page is just invisible in search results.

Crawling vs Indexing: Key Differences

Crawling vs indexing are interrelated but still very different in their functions. Crawling is all about locating your website pages and examining their content. On the other hand, indexing refers to the process of storing that data in Google's database and making it available for searches. This explains the difference between indexing and crawling and also answers what is the difference between crawling and indexing — one cannot be done without the other: if crawling doesn't take place, then no indexing will follow; consequently, your pages will remain invisible.

How Crawling Works

Crawling is the way search engines discover web pages and bring them to their servers. In order to manage proper indexing and crawling in SEO, search engines run computer programs called crawlers or bots that carry out this task automatically and at a continuous rate. Then, a page is indexed only after it has been crawled.

Search Engines Discover URLs

The very first step for search engines is to get the address of the web page (URL). They can uncover the URLs in different ways, for example:

• XML sitemaps submitted to Google Search Console
• Links from other websites
• Internal links inside the same website
• Old pages that were already indexed

If the website does not provide a sitemap and no one links to it, then Google may take quite a long time to reveal the pages of the site.

Crawlers Read Page Content

When a crawler opens the page, it continues to read the page's content in segments. The crawler, moreover, looks at the entire page, including the main text, titles, pictures, and links, and even retrieves the background code of the site running the page. It is the search engine that grabs all these data and uses them to determine the topic of the page and to judge its relevance to the users looking for information online.

• Main text and headings
• Images and videos
• Links and buttons
• Page structure and HTML code

Such information enables the search engine to determine the topic, intention, and standard of the page.

Crawlers Follow Links to Find New Pages

Crawlers can literally find a page by following the links on the page. Internal linking in your website allows the crawlers to find all the major pages of the site, while external links enable them to discover new websites. Any pages on your site that are not linked properly may probably never be discovered.

Crawlers Check robots.txt Rules

Before they read the content of the page, crawlers usually go and take a look at the robots.txt file first. This letter gives the search engine directions to which pages can be indexed and which are to be left out. If a major page is marked disallowed in robots.txt, then Google will even not crawl it.

Crawling Frequency Is Decided

Search engines decide how often to crawl a website based on:

• Website size
• How frequently is updated
• Website loading speed
• Popularity and authority

Websites that are large and regularly updated are crawled more frequently than those that are new.

Crawled Pages Are Prepared for Indexing

Once the crawling is finished, the gathered data is sent for processing. The page is thus set for indexing.

Analysis (Crawler Understanding the Page) - Google looks through the page content to determine:

• What the page is about
• Which keywords are included in it
• How valuable and original the content is
• If the content complies with the quality standards

Whether the page is worthy of being kept in Google's index or not is decided at this stage.

Storing (Saving the Page in Google's Database Temporarily) - Pages that meet Google's quality standards and are relevant get their details stored in the giant Google database, the index. Just being in the index won't mean your page is ranked high but if your page is not indexed, it is as good as non-existent to the search engine. So, indexing is basically opening the door for your site to be seen.

Retrieval (Showing the Page When Someone Searches) - When a query is entered, Google quickly scans its index and brings out those pages which are the most relevant to the query and lists them as search results. Your page can be one of the results in the relevant searches if that page has been indexed and appropriately optimized.

Why are Crawling and Indexing Essential to SEO?

Unsuspectingly, crawling and indexing in SEO form the foundation of SEO. Even if your content or keywords are top-notch, your site won't show up in search results at all if the search engines can't properly crawl and index your pages. In simple terms, understanding what is the difference between crawling and indexing in SEO helps you see why these two mechanisms decide whether your content is accessible to Google users or just another piece of unheard content on the web.

1. Allows Search Engines to Discover Your Website

Crawling enables the search engines to find the website and interpret the structure of that website. Without crawling, search engines would not even know your pages exist. Simply speaking, if Google can't crawl your site, your content won't be able to rank since it won't be found in Google search results. A nicely organised website with well-thought-out internal linking and an accurate sitemap significantly aids the crawlers in reaching all the important pages of your site.

2. Enables Your Pages to Show Up in Search Results

Google only shows its users the pages which it has indexed. Try to imagine a non-indexed page as one that search engines cannot see at all, hence it is impossible to be listed in the search results, even if the content is very good. Proper indexing means that Google has recognised your pages and is willing to show them to users who search for the topics your content covers.

3. Boosts Website Exposure

The more quality pages that are indexed in your site's database, the more your site will be revealed when various queries are made. After that, this will make your site more widely visible, so it will have more organic traffic from search engines since it will be an option for them.

4. New and Updated Content Can Be Seen Earlier

Publishing a new page or updating your content has never been an issue only if the crawling and indexing procedures work accordingly and speed up the recognition of those changes by Google. And that is what allows fresh content to get in the results faster rather than waiting for weeks.

5. Supports Better Keyword Rankings

It is known that search engines only have the potential to rank keywords on a website if the pages are indexed. Therefore, if your pages are not correctly indexed, the keywords you target will not rank. Proper crawling and indexing give your content that is optimized the chance to be ranked in the search results.

6. Prevents Important Pages from Being Missed

Search engines may not index some of your key pages if the site structure is poor or if the internal linking is insufficient. A good crawling system allows each important page to be identified and the entire valuable content of your website to be accessible to search engines.

7. Helps Identify SEO Issues

Page viewing tools such as Google Search Console show you the perspective of Google on your website. They are a great help in identifying issues of pages that are blocked, duplicated content, crawling errors, broken links, and wrong redirections. If you fix these issues, it will be easier for search engines to navigate your website without any hitches and discover your content efficiently.

8. Improves User Experience Indirectly

A website that is quick to load, considered well-structured and easy to navigate is not only good for search engines crawling but also is very pleasing to the users. Therefore, upon improving your website's crawling and structure, naturally, user experience will be enhanced, resulting in sustainable SEO growth.

Create an XML Sitemap - An XML sitemap is essentially a file where you put your website's important pages. It practically unveils to search engines your site's architecture and the direct path to your main content. Search engines can, thus, crawl your site faster and more accurately, without missing important pages.

Submitting an XML Sitemap in Search Console - By submitting your sitemap via Google Search Console, you are communicating to Google the exact locations of your pages. Consequently, this not only assists new as well as updated pages to get indexed more rapidly but also enhances the likelihood of quicker indexing.

Using robots.txt Wisely (Allow) - The robots.txt gives you the power to decide which pages will and which will not be seen by search engines. It is not a good idea to put a page that supports your business out there behind locked doors. Besides, if a page is something private, a duplication, or has no value for a search result, simply keep it away by denying access.

Mentioned Robot Index Follow - If you want to instruct the search engines to index your page and follow the links listed on your page, add the following code to the section of your page:

Page Wise Canonical Tags - Canonical tags indicate to search engines which page is the main one and thus they help to avoid duplicate content issues. Your SEO signals remain clean and focused this way.

Find and Fix Broken Links - Broken links increase the load on your crawl budget without bringing any benefits and they result in users having a bad experience on your website. Diagnose your website for broken links regularly and repair them to keep your site in a good condition and robot-friendly.

Fixing Duplicate or Blocked Pages - Duplicate pages are a big problem for search engines because they prevent them from deciding which one to rank, hence lowering your ranking possibility. So, you can simply get rid of the duplicates you do not really need and make sure that you are not blocking any important pages by mistake.