Definition
Crawl budget is the total number of pages a web crawler will request from a site during a crawling session. It sets an upper bound on resource consumption — time, bandwidth, compute, and API credits — ensuring that crawls remain manageable and cost-effective, particularly on large sites with thousands or millions of pages.
Why Crawl Budget Matters
Cost Control
Every page crawled consumes resources: network bandwidth for fetching, compute for rendering JavaScript and parsing, storage for the extracted data, and potentially API credits. Without a budget, a crawler on a large e-commerce site could attempt to visit millions of product pages, category combinations, and filtered views.
Time Management
Large sites can take hours or days to crawl completely. A budget ensures the crawler finishes within acceptable timeframes for your pipeline.
Target Site Courtesy
Even with proper rate limiting, fetching an excessive number of pages from a single site places load on its infrastructure. Budgeting crawl volume is part of responsible scraping practice.
Setting an Effective Budget
Know Your Target
Estimate the relevant content on the site. An online store with 10,000 products does not require crawling 100,000 pages — many will be duplicate category views, filtered results, and pagination variants.
Prioritize by Value
Combine budget limits with URL filters and prioritization rules. Crawl product pages before review pages, main categories before subcategories, recent content before archives.
Iterate and Adjust
Start with a conservative budget, analyze the results, and expand if needed. It is easier to increase a budget than to recover from an overly aggressive initial crawl that gets your IP blocked.
Budget Allocation Strategies
- Flat limit — stop after N total pages
- Per-section limits — allocate different budgets to different site sections
- Time-based — stop after a specified duration regardless of page count
- Content-based — stop when the rate of new useful content drops below a threshold
Crawl Budget in ScrapeGraphAI
ScrapeGraphAI lets you set explicit page limits for crawl operations, giving you direct control over resource consumption. This ensures predictable costs and completion times for every crawl job.