Originally published: January 18, 2022 · Last updated: August 16, 2026
IndexNow is a protocol that lets a website notify participating search engines when a URL has been added, updated or deleted. Instead of waiting for a crawler to discover every change independently, the site can send a change notification soon after publication.
That makes IndexNow useful for sites with content that changes frequently, but it is important to understand what the protocol does not promise: submitting a URL does not guarantee that it will be crawled immediately or indexed.
IndexNow is a change-notification protocol
The protocol accepts URLs that belong to a verified host. A site proves control with an IndexNow key, typically made available through a text file on the site.
Once ownership is established, the site can notify the endpoint when content changes. Search engines participating in IndexNow agree to share submitted URLs with other participating search engines.
HTTP 200 does not mean indexed
This is the most important correction to many old IndexNow tutorials. The official documentation states that an HTTP 200 response means the search engine received the URL or set of URLs. It is not a promise that the page has been indexed.
The page still needs to be crawlable, useful and eligible for indexing under the search engine’s normal systems.
Submit changed URLs, not the entire site repeatedly
IndexNow is designed around changes. The useful workflow is to notify search engines when a URL is published, materially updated or deleted.
The protocol supports bulk POST requests of up to 10,000 URLs, but that does not mean a small WordPress site should submit its entire sitemap after every edit.
WordPress can automate the process
For most WordPress owners, writing a Python script is unnecessary. IndexNow support can be integrated by an SEO plugin, a dedicated plugin or another publishing workflow that sends the notification when content changes.
The exact implementation matters less than making sure one system owns the job. Avoid several plugins all submitting the same URL independently.
Keep XML sitemaps
IndexNow does not replace the XML sitemap. Sitemaps provide a durable list of URLs you want search engines to discover and can include metadata such as modification dates. IndexNow provides a more immediate notification that something changed.
The two mechanisms complement each other.
Do not submit blocked or broken pages
Before expecting a notification to help, confirm that the URL is publicly reachable and not unintentionally blocked by robots rules or authentication. Deleted URLs can be submitted to signal a removal, but active pages still need to return the correct response and be crawlable.
Use it where freshness matters
IndexNow is most interesting for sites where the difference between discovering an update today and discovering it later has practical value. Examples can include:
- news or frequently updated editorial content;
- products that appear or disappear regularly;
- price or availability changes;
- events;
- large sites with frequent URL changes.
For a small static portfolio updated four times a year, IndexNow is unlikely to be the most important SEO priority.
Monitor the result without expecting a ranking boost
IndexNow helps communicate changes. It is not a ranking factor or a way to force low-value pages into search results.
Use webmaster tools, logs and normal indexing reports to verify whether important URLs are being discovered and crawled as expected.
A practical WordPress workflow
- Keep a clean XML sitemap.
- Choose one IndexNow implementation.
- Generate and verify the site key if required by the implementation.
- Notify IndexNow when public URLs are added, meaningfully updated or deleted.
- Do not repeatedly submit unchanged pages.
- Check that important URLs remain crawlable.
- Monitor indexing separately.
The practical rule
IndexNow is useful plumbing, not an SEO shortcut. Automate it when your site changes often enough to benefit, keep the sitemap and normal crawl controls healthy, and remember that a successful submission only confirms receipt of the notification.
Official reference: IndexNow protocol documentation.