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Crawl Budget

Crawl budget is the number of pages a search engine or crawler will fetch from a site within a given time. It limits how much of a large website actually gets crawled and indexed.

Last updated June 8, 2026

Definition

Crawl budget is the amount of crawling a search engine or bot allocates to a website, typically defined by how many pages it will fetch in a period. It combines two factors: crawl capacity (how much load the server can handle) and crawl demand (how much the crawler wants to visit the site).

How crawl budget works

Search engines like Google decide how often and how deeply to crawl based on site speed, server errors, content freshness, and popularity. If a site wastes budget on duplicate pages, redirects, or low-value URLs, important pages may go uncrawled.

Why it matters for scraping and SEO

  • For large scrapes, you face a similar constraint: limited time and resources mean prioritizing high-value URLs.
  • Efficient crawling avoids wasting requests on duplicate or junk pages, preserving crawl rate capacity.
  • Clean site structure and sitemaps help both search engines and scrapers focus budget on pages that matter.

Whether you are optimizing SEO or running a crawler, managing crawl budget ensures the most important pages are discovered without wasting resources.

Examples

1

Google crawling only a fraction of a million-page e-commerce site each day

2

A crawler wasting budget on faceted-search URL variations

3

Prioritizing product pages over paginated archives in a large scrape

Common Use Cases

Prioritizing high-value URLs in large-scale crawls
Reducing wasted requests on duplicate or low-value pages
Improving SEO by guiding search engines to important pages
Planning resource allocation for crawling huge websites

Frequently Asked Questions

Crawl rate is how fast requests are sent, while crawl budget is the total number of pages crawled over time. Rate is about speed; budget is about volume.
On large sites the crawler cannot fetch every page, so wasted budget on junk URLs means important pages may never be crawled or indexed.
Use clean URL structures, accurate sitemaps, fast servers, and avoid duplicate or low-value pages so crawlers focus on content that matters.

Keep Learning

All terms

Web Scraping

Web scraping is the automated extraction of data from websites — fetching pages programmatically and parsing their content into structured data.

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Rotating Proxy

A rotating proxy automatically assigns a different IP address from a pool for each request or on a set interval, spreading traffic across many IPs to avoid blocks.

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IP Rotation

IP rotation is the practice of automatically cycling through multiple IP addresses so that successive requests originate from different IPs.

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Rate Limiting

Rate limiting restricts how many requests a client can make in a given time, and it is one of the most common defenses scrapers must work around.

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