Googlebot File Limit Is 15MB, 2MB & 64MB For PDF

02/04/26
Source: Search Engine Roundtable by barry@rustybrick.com (Barry Schwartz). Read the original article

TL;DR Summary of Google Updates File Size Crawling Limits for PDFs and Other Files

Googlebot now officially crawls up to 64MB of PDF files and the first 2MB of other supported file types. The default crawl limit for most files remains 15MB. These limits apply to uncompressed data, and once reached, Googlebot stops fetching more data for indexing. Different Google crawlers may have varying limits depending on file type.

Optimixed’s Overview: Understanding Google’s Updated File Size Crawling Limits and Their Impact on SEO

Key Updates to Googlebot’s Crawling Limits

Google recently clarified the size limits its crawlers, including Googlebot, use when fetching files for indexing. These updates are essential for webmasters and SEO professionals to understand in order to optimize content effectively.

  • PDF Files: Googlebot crawls up to 64MB of a PDF file. This is a notable increase compared to other file types.
  • Other Supported File Types: Googlebot crawls the first 2MB of these files, including HTML.
  • Default Limit: Generally, Google’s crawlers fetch only the first 15MB of any file by default, but this can vary by crawler and file type.

How These Limits Affect Web Crawling and Indexing

Googlebot applies these limits to the uncompressed data it fetches. Once the size cutoff is reached, it stops fetching more data and only indexes what it has already downloaded. This means:

  • Content beyond these limits may be ignored during indexing.
  • Resources referenced within HTML (e.g., CSS, JavaScript) are fetched separately but are subject to the same size restrictions.
  • Other specialized crawlers like Googlebot Video and Googlebot Image have different limits tailored to their specific use cases.

Implications for SEO and Content Optimization

Understanding these size limits helps ensure that important content is accessible to Googlebot within these thresholds. For example:

  • Large PDF documents should be optimized to keep the most critical content within the first 64MB.
  • HTML and other files should prioritize valuable content within the 2MB limit to ensure full indexing.
  • Webmasters should monitor and optimize resource sizes to prevent incomplete crawling.

By aligning content strategies with these updated crawling limits, site owners can improve their chances of effective indexing and ranking on Google Search.