Based on 34 and 325 real audits
| Metric | Integral Ad Science | Prebid | Winner |
|---|---|---|---|
| Performance | 35 | 33 | Integral Ad Science |
| Accessibility | 88 | 87 | Integral Ad Science |
| Best Practices | 83 | 81 | Integral Ad Science |
| SEO | 93 | 90 | Integral Ad Science |
| Security | 65 | 64 | Integral Ad Science |
| TTFB | 274ms | 294ms | Integral Ad Science |
| Composite | 72 | 72 | Tie |
Integral Ad Science outperforms Prebid in 6 of 7 categories, with a stronger composite score (72 vs 72). Prebid leads in no categories.
Choose Integral Ad Science when your primary concern is server response time and SEO. Its audit data shows consistent strength in these areas across the sampled sites.
Prebid doesn't clearly lead Integral Ad Science in any category on the sampled sites — pick it based on developer experience, ecosystem, or existing team skills rather than the audit scores.
Scores are medians across 34 audited Integral Ad Science sites and 325 audited Prebid sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →
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