A sitemap is an XML file that lists the URLs of a website and communicates to search engine crawlers the list of pages to explore. For a blog, this file acts as a structured inventory: it indicates which pages exist, when they were modified, and how they are organized among themselves.
The sitemap ping no longer works: what this means for your blog
Many SEO plugins for WordPress or other CMSs included a “ping” function that automatically notified Google each time a new article was published. This mechanism relied on a dedicated endpoint at Google.
This endpoint has been officially disabled and now returns errors. If your blog still relies on an old or poorly maintained plugin that simply pings Google, your new publications are no longer reported through this channel.
The consequence is direct: the only reliable method for Google to consider your sitemap remains to declare it in the robots.txt file and submit it via Google Search Console. A blog that publishes regularly without having checked this point risks seeing its recent articles stagnate outside the index, with no apparent explanation. To better understand the mechanics of this file and its generation, you can see the sitemap page of Blospot which details the concrete functioning.
Indexing status in Search Console: reading the signals from the sitemap
Submitting an XML sitemap in Google Search Console does not guarantee the indexing of all listed URLs. The dedicated report assigns one of three statuses to each submitted sitemap: Success, Has errors, or Couldn’t fetch.
The main interest of this report for a blog lies in the comparison between the URLs discovered via the sitemap and their actual status in the “Pages” report. A URL may appear as discovered but remain stuck at the status “Discovered, currently not indexed”.
This status does not indicate a technical problem with the sitemap itself. It points to a quality issue with the content, cannibalization between similar articles, or insufficient internal linking. The sitemap has fulfilled its role by signaling the page, but Google has decided not to index it for other reasons.
Identifying poorly covered blog sections
By cross-referencing the sitemap report with the Pages report, you can spot which categories or series of articles are systematically ignored. If an entire category of your blog predominantly shows the status “not indexed” despite its presence in the sitemap, the signal is clear: the problem lies with the content or internal architecture, not the XML file.
This cross-reading transforms the sitemap into a diagnostic tool. Without it, these orphan URLs would remain invisible in your dashboard.
XML Sitemap and blog structure: organizing to be crawled
A blog accumulates pages over time. Without explicit structure, crawlers discover articles by following internal links, page by page. This journey is slow and incomplete, especially when old articles are no longer linked from the homepage or recent archives.
The XML sitemap bypasses this problem by providing a comprehensive list. Each URL is accompanied by a <lastmod> tag indicating its last modification. Crawlers can thus prioritize recently updated pages without traversing the entire site.
Separating sitemaps by content type
For a sizable blog, a single sitemap that mixes articles, static pages, and categories becomes difficult to utilize, both for crawlers and for the webmaster trying to analyze indexing coverage.
Fragmenting the sitemap into several specialized files (one for articles, one for pages, one for categories) and then grouping them in a sitemap index offers several concrete advantages:
- Each file remains readable and its status in Search Console is verifiable independently of the others
- A problem with one type of content (404 error on old categories, for example) does not affect the processing of articles
- The update frequency can be adjusted by file, reflecting the actual publishing rhythm better
Robots.txt and sitemap declaration: the often-overlooked configuration point
Declaring the location of the sitemap in the robots.txt file is a simple step but frequently forgotten. The directive takes the form of a single line:
Sitemap: https://votredomaine.com/sitemap.xml
This declaration allows all search engines (not just Google) to locate the file without going through Search Console. Bing, Yandex, and other crawlers read robots.txt as a priority.
Without this line, the sitemap exists only for the engine to which you manually submitted it. A blog aiming for visibility beyond Google has every interest in not skipping this step.
Checking that the sitemap is accessible
A declared sitemap that returns an HTTP error (403, 404, 500) is worse than an absent sitemap: it generates errors in Search Console and can slow down the crawl frequency allocated to your domain. Before any submission, three points deserve verification:
- The sitemap URL responds with an HTTP 200 code
- The file is in valid XML format, without improperly encoded characters
- No Disallow rules in robots.txt block access to the sitemap file itself
A correctly declared, accessible, and segmented sitemap by content type does not replace good internal linking or quality articles. It makes visible what already exists on your blog and provides the necessary data to diagnose what search engines choose to ignore. The sitemap file is a tool for transparency between your blog and indexing robots, not a guarantee of ranking.