Brozzler review
A focused open-source crawler for capturing JavaScript-driven pages as WARC records.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Brozzler is an open-source web crawler from the Internet Archive for technical teams that need to capture websites using browser behavior. Its use of a real browser helps it crawl pages that depend on JavaScript, and it writes web archive data in WARC format. It is designed as a distributed crawler, not as a hosted archiving service, so the fit is strongest for teams prepared to operate crawling software themselves.
The browser-based capture is Brozzler’s defining capability. Rather than treating a website as only static page content, it crawls through browser behavior, which can capture JavaScript-driven pages. Distributed crawling supports work spread across a crawler system. These strengths make it relevant for website-scale archiving when browser rendering matters; the tool is specifically a crawler, however, rather than a complete archive discovery or management product. Teams looking for built-in archive browsing or search should consider a broader option.
Brozzler is free and open source, with Linux and self-hosted deployment. There is no hosted service in the product description, so teams need technical capacity to deploy and operate it. Its output is WARC, a useful fit when the requirement is web archive data in that format. Choose Brozzler if browser-based, distributed crawling and WARC output match your workflow and you can run the software. It is a less suitable choice for organizations seeking a managed archive service or a product centered on searching and browsing captured content.
Brozzler pros and cons
- Where it wins
- Uses browser behavior to capture JavaScript-driven pages
- Distributes crawling across a crawler system
- Writes captured web archive data in WARC format
- Where it doesn't
- Requires teams to deploy and operate it themselves
- Focused on crawling, not archive browsing or search
- No hosted archiving service
Brozzler fact sheet, pricing and score →
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