Google Webmaster tools provides the diagnostics of a website by using
- Web Crawl
- Mobile Crawl
- Content Analysis
Web Crawl: Observes errors and problems found by Google bot during indexing pages on your site.
Mobile Crawl: Observes errors and problems found by Google bot during indexing pages on your site created openly for viewing on mobile cell phones.
Content Analysis: Provides information on Meta description issues, title tag issues, and non indexable content issues.
Web Crawl: While Google Bot crawling our website from web page to web page by following the links, Google webmaster tools generate reports on problems occurred while crawling our webpage with the following errors if available
- Errors for URLs in Sitemaps: occurs if we give incorrect URLs in sitemap
- HTTP errors: for example 401/407 authentication error
- Not found: for example 404 not found error
- URLs not followed: redirect error, redirect loop error, and redirect URL too long, invalid redirect, empty redirect.
- URLs restricted by robots.txt: <Meta name = “robots” content = “nofollow, noindex”> will not be indexed and cached by Google.
- URLs timed out: for example DNS lookup timeout, URL timeout, robots.txt timeout
- Unreachable URLs: for example 5xx error, DNS issue
Web crawl will give the list of URLs in which the problems detected and in which day that problem is detected and in which pages not found links are available.
Mobile Crawl:
Mobile Crawl gives report on two types on errors; they are Mobile CHTML crawl errors and Mobile WML/XHTML crawl errors
Content Analysis:
Google webmaster provides content analysis report based on the following issues:
- Meta Description issues
- Title Tag issues
- Non-indexable content issues
Meta Description issues consists of
- Duplicate meta descriptions
- Long meta descriptions
- Short meta descriptions
Duplicate Meta Descriptions:
While crawling if Google bot found the same description in different URLs of the website it will report which description is repeated.
Long Meta Descriptions:
While crawling if Google bot found the Meta description is long (if it exceeds 160 – 250 characters) for any page it will report the URL in which the description is long.
Short Meta Descriptions:
While crawling the website if the Google bot found the short Meta description. Even though it will not create any problem for indexing if we increase the title length it will be useful for better search engine rankings.
Title Tag Issues consists of
- Missing Title Tags
- Duplicate Title Tags
- Long Title Tags
- Short Title Tags
- Non-informative Title Tags
Missing Title Tags:
While crawling if it found any webpage without title tag Google bot will report.
Duplicate Title Tag:
While crawling if the Google bot find the two web pages with the same title tag bot will report the pages with duplicate title tag.
Long Title Tag:
If the title tag exceeds the 66 characters bot will report the title tag and the corresponding URLs.
Short title Tag:
Google bot will report the corresponding title tag and the URL if the title length is short.
Non informative Title Tag:
The title tag which will not provide any information to the search engines and users known as non informative title tag.
Non Indexable Content Issues:
If Google bot found any content which is not indexable means content restricted by putting nofollow.
By looking at these webmaster tools if we make changes to our web site, we will get good search engine rankings.
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