CCBot vs Bytespider: Which AI Crawler Should You Allow or Block?
Complete side-by-side comparison of CCBot (Common Crawl) and Bytespider (ByteDance): user-agent strings, safety ratings, SEO impact, and copy-paste blocking rules. Updated August 2026.
Quick Verdict
CCBot has the better safety profile (Caution) compared to Bytespider (Aggressive). If you allow only one, CCBot is the lower-risk choice. Bytespider warrants closer monitoring in your server logs, and server-level blocking if robots.txt directives are not respected.
| Attribute | CCBot | Bytespider |
|---|---|---|
| Operator | Common Crawl | ByteDance |
| User-agent string | CCBot |
Bytespider |
| Category | Data Scrapers | Data Scrapers |
| Safety rating | Caution | Aggressive |
| SEO impact if blocked | Low - No SEO ranking impact | Low - No SEO ranking impact |
| Recommendation | Consider blocking based on your content strategy. | Block this bot - it provides no SEO benefit and wastes crawl budget. |
| Official docs | CCBot docs | Bytespider docs |
What is CCBot?
CCBot is the crawler for Common Crawl, a non-profit that scrapes the web to provide open datasets. While useful for research, it consumes significant bandwidth.
Full CCBot guideWhat is Bytespider?
The aggressive web crawler operated by ByteDance (parent company of TikTok). It is known for high crawl rates and is primarily used to gather data for their Large Language Models (Doubao/Lark).
Full Bytespider guideHow to block each bot
Block CCBot in robots.txt
User-agent: CCBot Disallow: /
Block Bytespider in robots.txt
User-agent: Bytespider Disallow: /
Want to block or allow many bots at once? Use our free robots.txt generator with 196+ bot presets, then verify with the AI crawler checker.
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