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Search + AI guide

IndexNow explained: telling search engines when a page changes

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By Redenn Engineering
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The short answer

IndexNow is an open protocol, supported by Bing and other participating search engines, that lets your website notify them the moment a URL is added, updated or deleted, instead of waiting for the next crawl. It is a notification, not a ranking signal: it can speed up discovery of a change, and it does nothing for a page that is not worth indexing.

How IndexNow works

You generate a key, publish it as a small text file on your domain so an engine can confirm the site is yours, and then send a request listing the URL or URLs that changed. Participating engines share submissions with each other, so one notification reaches all of them. That is the whole protocol, which is why it can be built into a publish step rather than run as a campaign.

The protocol and the list of participating engines are documented at indexnow.org. Check that list rather than assuming; not every search engine takes part, and participation can change.

For a business website the practical value is modest but real: a new service page, a changed price list or a removed offer reaches participating engines as soon as the notification is processed, rather than whenever the crawler next returns. Bing's index also informs Copilot answers, so a faster update there matters more than it once did.

When to send a ping

The rule is simple: send a notification when something a search engine would want to know about has changed, and only then.

IndexNow: when to notify and when not to
EventSend?Why
A new page is publishedYesDiscovery can happen sooner than the next scheduled crawl
An existing page's content changes materiallyYesThe engine knows to re-fetch rather than keep a stale copy
A page is deleted or redirectedYesSignals the removal or the new location faster
A typo fix or a date change in the footerNoNot material; save the notification for real changes
Every page, every day, on a scheduleNoThis is spam; repeated pings for unchanged URLs can be ignored or throttled
A page that is noindex or blocked in robots.txtNoYou are asking an engine to fetch something you told it not to index

Do not spam

IndexNow rewards honesty in the same way search does: a site whose notifications are always meaningful is one an engine can trust.

  • Send a URL once per real change, not on every build or deployment.
  • Do not resend the whole sitemap daily; sitemaps already exist for that job.
  • Do not ping URLs you do not own, or URLs on a staging site.
  • Batch the changes from a bulk edit into one request rather than hundreds.
  • Keep the key file in place; a missing key makes every notification fail silently.

Google and IndexNow

Check the participating engines list on indexnow.org before assuming Google is included. For Google, the reliable tools remain a clean sitemap submitted in Search Console, internal links to new pages and, for an urgent single URL, the request-indexing option in the URL inspection tool. IndexNow and those tools sit side by side; one does not replace the other.

Bing Webmaster Tools readiness checklist

IndexNow is only useful if the receiving engine already trusts and understands your site. Get Bing Webmaster Tools in order first.

  • Verify the site in Bing Webmaster Tools under an account the business owns.
  • Submit the XML sitemap and confirm it is read without errors.
  • Fix the crawl errors and blocked resources it reports.
  • Confirm robots.txt allows Bingbot.
  • Publish the IndexNow key file and confirm it loads in a browser.
  • Send a first notification for a real change and confirm Webmaster Tools reflects the submission.

How Redenn implements it

IndexNow is part of Redenn's Search + AI Foundation (CA$299 one-time) and is included in the Growth System. It is wired into the publish step: when a page is created, changed materially or removed, the site sends the notification automatically, and unchanged pages are never resent. The Search Console setup add-on (CA$29) covers Bing Webmaster Tools verification and sitemap submission, which is the readiness half of the job.

Limitations

Knowing what IndexNow is not saves disappointment.

  • A notification is not a guarantee of indexing; the engine still decides whether the page is worth it.
  • It does not affect ranking.
  • It only helps engines that participate.
  • It cannot fix a page that is slow, thin or blocked.

Questions

Does IndexNow cost anything?

The protocol is open and there is no charge for using it. The cost is the small amount of engineering to generate a key and send notifications at publish time, which Redenn includes in Search + AI Foundation.

Does IndexNow help with Google?

Check the participant list on indexnow.org. For Google, rely on sitemaps in Search Console, internal links and the URL inspection tool; IndexNow complements those rather than replacing them.

Does IndexNow improve rankings?

No. It speeds up discovery of a change. Ranking depends on the page and on the engine's systems.

How often should I send notifications?

Once per real change to a URL. Not on a schedule, and never for unchanged pages.

What is the key file?

A small text file containing your IndexNow key, hosted on your domain, which lets an engine confirm that notifications for your URLs really come from you.

Do I need Bing Webmaster Tools first?

You can send notifications without it, but you will have no way to see what Bing did with them. Verify the site and submit the sitemap first.

Sources

  1. IndexNow, IndexNow. Accessed 2026-09-24.

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