Google Recommends 304 Status Codes

Google has refreshed its official crawl budget documentation, introducing several updates that provide greater clarity on how its crawling systems operate. Among the most notable changes is a recommendation for website owners to support 304 Not Modified HTTP status codes, helping Google avoid downloading pages that have not changed since they were last crawled.

While the guidance is primarily aimed at enterprise websites and large publishers with extensive content libraries, the update also offers useful insight for anyone looking to improve website performance and search visibility. Understanding how Google allocates crawl resources can help site owners ensure that important pages are discovered and indexed more efficiently.

What Is Crawl Budget?

Crawl budget refers to the amount of time and resources Google is willing to spend crawling a website during a given period. Rather than crawling every page continuously, Google prioritises its resources based on factors such as website size, server performance and how frequently content changes.

For smaller websites with only a few hundred pages, crawl budget is rarely a concern because Google can usually crawl the entire site without difficulty. However, websites containing tens of thousands or even millions of pages need to make sure Google’s crawlers spend their time efficiently.

This is particularly important for large ecommerce stores, property portals, news publishers and websites that publish fresh content throughout the day.

Google Clarifies That Crawlers Share the Same Capacity

One of the most significant additions to Google’s documentation explains that all of its crawlers draw from the same crawl capacity.

Although Google operates several specialised crawlers for different types of content, including standard webpages, images and other resources, they do not each receive their own separate crawl budget. Instead, they all share the available crawling capacity assigned to a website.

This means that increased activity from one crawler can reduce the resources available for others.

For example, if Googlebot-Image is heavily crawling thousands of images across a website, it may temporarily limit how much attention Googlebot can give to crawling standard webpages. Likewise, if one section of a website is generating unusually high crawl demand, it could affect how frequently other areas are revisited.

This clarification helps website owners better understand why crawl activity can fluctuate even when no technical issues are present.

Why Google Is Recommending 304 Status Codes

Another key update is Google’s recommendation that websites support 304 Not Modified HTTP responses whenever possible.

A 304 status code tells Google that a page has not changed since it was last crawled. Rather than downloading the page all over again, Google can simply use the cached version it already has stored.

Although 304 belongs to the HTTP 3xx family of response codes, it does not actually redirect users to another page. Instead, it acts as a signal that the requested content remains unchanged and can safely be reused.

This seemingly small response can have a meaningful impact on crawling efficiency.

Instead of repeatedly requesting identical pages, Google’s crawlers can spend their available resources discovering new content or revisiting pages that have recently been updated.

Reducing Server Load

Using 304 responses benefits more than just Google’s crawlers.

Every time a search engine requests a page, the server must process that request and send back the necessary files. If thousands of unchanged pages are downloaded repeatedly, this creates unnecessary server activity and consumes additional bandwidth.

By returning a 304 response where appropriate, websites can significantly reduce the amount of data transferred between the server and Google’s crawlers.

This helps:

Lower bandwidth usage
Reduce server workload
Improve overall website efficiency
Allow Google to crawl updated content more quickly

For websites that receive frequent search engine visits, these savings can become substantial over time.

Which Websites Benefit Most?

Google’s crawl budget guidance specifically targets websites that have either:

More than one million pages, or
Over 10,000 pages that change frequently.

These include:

Ecommerce websites with large product catalogues
Property portals with constantly changing listings
News websites publishing articles throughout the day
Forums with high volumes of user-generated content
Large business websites with extensive documentation

Smaller business websites generally do not need to worry about crawl budget, as Google is usually able to crawl their content without difficulty.

However, understanding how Google’s crawlers work remains valuable for anyone responsible for website performance or SEO.

Why Efficient Crawling Matters

Google’s goal is to deliver the most accurate and up-to-date search results possible.

If its crawlers spend unnecessary time downloading pages that have not changed, they have less capacity available to discover genuinely new content.

Supporting proper HTTP caching and 304 responses helps Google’s systems identify unchanged pages more efficiently, allowing the search engine to prioritise content that actually requires indexing.

This can be especially useful for websites publishing regular updates, where timely indexing of fresh pages is important.

More Than Just One Update

While the recommendation around 304 responses is likely to receive the most attention, Google also made several smaller revisions throughout its crawl budget documentation.

Many of these edits simply improve wording and provide clearer explanations of how Google’s crawling systems behave. The documentation now gives website owners a better understanding of how different crawlers interact with a site and how crawl resources are allocated.

Together, these updates reinforce Google’s ongoing focus on efficient crawling rather than simply increasing crawl volume.

Final Thoughts

Google’s latest crawl budget update serves as a useful reminder that efficient website management goes beyond creating great content. Technical optimisation also plays an important role in helping search engines crawl and index pages effectively.

For larger websites, implementing support for 304 Not Modified responses can reduce server load, conserve bandwidth and help Google dedicate more of its crawl budget to pages that have actually changed.

Although most smaller websites are unlikely to experience crawl budget limitations, following Google’s technical best practices can still contribute to a healthier website and more efficient search engine crawling over the long term.