Optimizely is an enterprise experimentation platform — A/B testing, feature flags, and multivariate experiments for large product teams. PageGuard monitors your website’s public-facing health — WCAG accessibility, Core Web Vitals, SEO, and ADA compliance — with zero script required, from $9/mo.
ADA Title II Deadline: April 24, 2026
State and local government websites must meet WCAG 2.1 AA. Optimizely runs A/B tests and feature experiments but provides zero accessibility auditing or ADA compliance monitoring. PageGuard monitors accessibility continuously — alerting you before violations occur and ensuring each experiment variant stays compliant.
| Feature | PageGuard | Optimizely |
|---|---|---|
| Pricing | ✓ Free + from $9/mo (automated website health monitoring) | Enterprise-only; Optimizely One starts around $36,000–$150,000+/year; no self-serve free tier for web experimentation |
| Who is it for? | Small businesses, designers, agencies — frontend health, ADA compliance & SEO | Enterprise product and engineering teams running large-scale A/B tests, feature flags, and personalisation programs |
| Accessibility audit (WCAG / ADA) | ✓ Yes — WCAG 2.1 AA scored 0–100 with specific issue list | No — no accessibility scoring or WCAG compliance checks |
| Technical SEO audit | ✓ Yes — meta tags, headings, canonical, structured data, robots.txt | No — no SEO auditing capabilities |
| Performance scoring (Core Web Vitals) | ✓ Yes — LCP, CLS, FCP scored 0–100 with fix recommendations | No — no Core Web Vitals scoring; Optimizely experiments can impact page performance without measurement |
| A/B testing & feature experimentation | No — focuses on technical health monitoring, not experiments | ✓ Yes — enterprise-grade web and server-side A/B testing, feature flags, multivariate experiments |
| Feature flags & rollouts | No — scans public HTML health, not feature delivery | ✓ Yes — progressive feature rollouts, percentage-based targeting, kill switches |
| Requires JS snippet installation | ✓ No — zero setup, scan any public URL instantly | Yes — requires Optimizely JavaScript snippet on every page; server-side SDK for backend experiments |
| ADA Title II compliance monitoring | ✓ Yes — WCAG audit + automated email alert on accessibility regression | No — no ADA compliance features or alerts |
| Continuous automated monitoring & alerts | ✓ Yes — weekly or daily scans with email alerts on score drops | No — passive experimentation platform; no proactive website health alerts |
| Best Practices audit (HTTPS, security headers) | ✓ Yes — HTTPS enforcement, security headers, image optimisation | No — no front-end best practices auditing |
| No-signup instant scan | ✓ Yes — scan any URL in ~30 seconds, no account required | No — requires enterprise contract, onboarding, and snippet installation before any experiments run |
| Statistical analysis & experiment results | No — focuses on technical health, not conversion experiments | ✓ Yes — Bayesian and frequentist statistical engines with confidence intervals and segment analysis |
| AI-generated plain-English report | ✓ Yes — explains technical issues in non-technical language | No — experiment dashboards require data science expertise to interpret results |
| Multi-site management | Yes — monitor up to 50 sites from $9/mo | Yes — multiple projects supported; enterprise pricing scales with monthly visitors (MAU) |
Unlike Optimizely, no snippet installation, no enterprise contract. Performance + Accessibility + SEO + Best Practices scored in 30 seconds.
Results in ~30 seconds. 4 scores: Performance, Accessibility, SEO, Best Practices.
They solve different problems. Optimizely runs enterprise A/B tests, feature flags, and multivariate experiments to drive product metrics and conversion rates — built for large engineering and growth teams. PageGuard monitors your public-facing website health — WCAG 2.1 AA accessibility scoring, Core Web Vitals, technical SEO, and ADA compliance alerts. Many teams use both: Optimizely to experiment and improve metrics, PageGuard to ensure all experiment variants are technically healthy and accessible for every visitor.
No — Optimizely does not provide WCAG 2.1 AA compliance scoring or ADA accessibility monitoring. It is an enterprise experimentation platform focused on A/B testing, feature delivery, and data-driven product decisions — not the technical accessibility of public web pages. With the ADA Title II deadline on April 24, 2026, PageGuard provides the accessibility monitoring that Optimizely cannot.
PageGuard is free for on-demand website health audits — no tracking script, no account, zero setup. Optimizely’s enterprise experimentation plans start around $36,000–$150,000+/year, which is a completely different use case than health monitoring. PageGuard lets you scan any public URL and receive a scored report covering Performance, Accessibility (WCAG 2.1 AA), SEO, and Best Practices in ~30 seconds. Automated monitoring starts at $9/month.
Yes — they are complementary tools. Use Optimizely to run A/B tests, feature rollouts, and product experiments to drive key metrics, and PageGuard to ensure every experiment variant on your public-facing pages remains technically healthy and accessible (WCAG audit, SEO audit, Core Web Vitals, ADA compliance monitoring). Together: Optimizely for “how do we improve product metrics through experimentation”, PageGuard for “are all variants technically healthy and ADA-compliant”.