Limelight Networks (now Edgio) is a global CDN and streaming platform with 130+ PoPs serving major broadcasters, game publishers, and enterprises — but as a delivery infrastructure it has no WCAG accessibility audit, no Core Web Vitals scoring, and no post-deployment front-end quality monitoring. PageGuard audits any Limelight/Edgio-delivered website externally — free, no CDN access needed, results in 30 seconds.
ADA Title II Deadline: April 24, 2026
Broadcasters, government agencies, educational institutions, and media companies serving content through Limelight/Edgio face ADA Title II and Section 508 compliance requirements. Limelight/Edgio delivers HTML pages and streaming video at massive scale — but cannot enforce that the HTML it serves implements correct alt text (WCAG 1.1.1), ARIA landmarks, keyboard navigation, or color contrast. An accessibility regression cached at Limelight/Edgio's 130+ global PoPs is immediately delivered to millions of users with no Limelight/Edgio alert. PageGuard monitors any CDN-delivered website for WCAG compliance without requiring CDN account access or configuration changes.
PageGuard vs Limelight Networks/Edgio — CDN streaming infrastructure vs deployed website quality monitoring
| Feature | PageGuard | Limelight / Edgio |
|---|---|---|
| What is it? | External website health monitor — scans any deployed URL for performance, accessibility, SEO, and best practices | Limelight Networks (now rebranded as Edgio) is a global content delivery network and streaming media platform founded in 2001 and headquartered in Scottsdale, Arizona; Limelight/Edgio operates a private fiber network across 130+ PoPs in 50+ countries and serves high-volume video streaming, live events, large software downloads, and web acceleration for enterprise customers including Microsoft, Sony, Nintendo, and major broadcasters; Limelight pioneered large-scale streaming CDN delivery and offers purpose-built infrastructure for OTT video delivery, game distribution, live event streaming, and general web content acceleration; as a CDN and edge delivery platform Limelight/Edgio focuses entirely on fast, reliable content delivery and has no capability to audit the HTML content it delivers for WCAG accessibility compliance, Core Web Vitals quality, or technical SEO correctness |
| Free tier | ✓ Yes — unlimited one-off scans, no signup required | No free tier — Limelight/Edgio operates on an enterprise contract model with custom pricing based on traffic volume; pricing is quote-based and typically requires direct sales engagement; the platform is designed for enterprises with significant CDN traffic volumes, not individual websites or small businesses; none of the CDN delivery tiers include WCAG accessibility auditing, Core Web Vitals measurement, or technical SEO analysis of the content delivered |
| Accessibility audit (WCAG / ADA) | ✓ Yes — WCAG 2.1 AA scored 0–100 with specific issue list | No — Limelight/Edgio is a CDN and streaming delivery platform; it has no built-in WCAG compliance checking, accessibility scoring, or ADA compliance monitoring for the web pages and video content it delivers; Limelight/Edgio intercepts HTTP requests at its edge PoPs, applies caching rules and routing logic, and delivers cached or freshly fetched responses to end users — it does not parse, analyze, or validate the HTML content of those responses for missing alt text (WCAG 1.1.1), insufficient color contrast (WCAG 1.4.3), ARIA landmark structure (WCAG 1.3.1), keyboard navigability (WCAG 2.1.1), or any other WCAG 2.1 success criterion; Limelight/Edgio can deliver accessible or inaccessible web pages with equal efficiency — accessibility quality is determined entirely by the origin server's HTML, not by the CDN delivery layer |
| Technical SEO audit | ✓ Yes — meta tags, headings, canonical, structured data | No — Limelight/Edgio provides no SEO audit of the web pages it delivers; Limelight/Edgio can be configured to modify HTTP response headers (Cache-Control, Vary, X-Edge-Location), enforce HTTPS redirects, and apply URL rewriting at the edge — but these are infrastructure-level delivery configurations, not content-level SEO audits; Limelight/Edgio does not analyze the meta title, meta description, heading hierarchy, canonical URL tag, structured data markup, or internal link quality of the HTML pages delivered through its CDN; Limelight/Edgio's analytics dashboards provide traffic metrics, cache hit rates, bandwidth consumption, and error rates — not whether the delivered HTML has a missing title tag or duplicate H1 elements that could harm SEO |
| Performance audit (Core Web Vitals) | ✓ Yes — LCP, CLS, FCP scored 0–100 per scan | No — Limelight/Edgio does not directly measure browser-side Core Web Vitals (LCP, CLS, FCP, INP) for pages it delivers; Limelight/Edgio contributes to server-side performance through its private fiber network, edge caching, and low-latency routing — but these CDN-side improvements do not measure the actual browser-experienced LCP, CLS, or FCP of the rendered page; Edgio does offer an Application Platform product with performance optimizations but this is not equivalent to auditing Core Web Vitals scores of any arbitrary website; Core Web Vitals are browser-side metrics that depend on rendering, layout stability, and interactivity — factors beyond the CDN delivery layer's scope |
| Global CDN delivery and streaming | No — PageGuard is an external monitoring tool, not a CDN or content delivery infrastructure | ✓ Yes — this is the core value proposition of Limelight/Edgio: a private fiber CDN network with 130+ PoPs in 50+ countries purpose-built for high-volume streaming and enterprise delivery; Limelight/Edgio specializes in OTT video delivery (HTTP Live Streaming, DASH, SmoothStreaming), live event streaming with ultra-low latency, large software and game distribution (Nintendo, Sony, Microsoft), and general web content acceleration; Edgio Application Platform adds serverless edge compute for dynamic personalization; real-time analytics with edge metrics on traffic, cache performance, and error rates; Origin Shield to protect origin servers from traffic spikes; and DDoS mitigation at scale |
| Automated website monitoring | ✓ Yes — weekly or daily scans with email alerts on score drop | No — Limelight/Edgio does not perform automated front-end quality monitoring of WCAG compliance, Core Web Vitals, or SEO quality for pages it delivers; Limelight/Edgio's analytics and alerting capabilities focus on CDN operational health (cache hit ratio, origin error rates, bandwidth trends, DDoS attack alerts) — not the HTML content quality, accessibility compliance, or SEO correctness of delivered pages; an accessibility regression introduced by a developer and immediately cached and served at Limelight/Edgio's global edge would be invisible to Limelight/Edgio's monitoring systems |
| AI-generated plain-English report | ✓ Yes — explains issues in non-technical language | No — Limelight/Edgio provides no AI-generated health report or plain-English explanation of front-end accessibility, SEO, or Core Web Vitals issues for pages it delivers; Limelight/Edgio's reporting covers CDN performance metrics such as bytes transferred, cache hit ratio, HTTP error rates, and edge node performance — not content-level quality issues in the HTML being served to browsers |
| ADA Title II compliance monitoring | ✓ Yes — WCAG audit + alert on accessibility regression | No — Limelight/Edgio does not audit or alert on WCAG compliance for pages it delivers; broadcasters, government agencies, educational institutions, and media companies serving content through Limelight/Edgio's CDN face ADA Title II and Section 508 compliance requirements; Limelight/Edgio serves cached HTML pages and streaming video to users — but whether those pages implement correct alt text, keyboard navigation, ARIA roles, sufficient color contrast, or proper focus management is determined entirely by the origin server's content, not by the CDN delivery layer; an accessibility regression cached and served at Limelight/Edgio's 130+ global PoPs is immediately delivered at scale with no Limelight/Edgio alert or detection; ADA Title II deadlines apply with equal force regardless of which CDN delivers the non-compliant content |
| Works on any deployed platform | ✓ Yes — scans any URL on any hosting or platform | Limelight/Edgio delivers content for its contracted enterprise customers on its private fiber CDN network; it does not scan or monitor the front-end quality of web pages served by other CDNs or hosting platforms; PageGuard audits any URL regardless of whether it is served through Limelight/Edgio, Cloudflare, Akamai, Fastly, or any other CDN infrastructure |
| Independent external audit | ✓ Yes — third-party scan, shareable URL for clients/stakeholders | No — Limelight/Edgio provides no built-in tool to generate a shareable external front-end health report for websites it delivers; Limelight/Edgio's portal shows CDN performance analytics (traffic, bandwidth, cache performance, error rates) but these are internal operational dashboards, not client-shareable accessibility or SEO quality reports |
| Instant on-demand scan | ✓ Yes — results in 30 seconds, no code changes needed | No — no on-demand front-end health scan of websites delivered through Limelight/Edgio's CDN; auditing a Limelight/Edgio-delivered website for WCAG accessibility, Core Web Vitals, or SEO quality requires running third-party tools against the public URL; Limelight/Edgio has no built-in concept of on-demand accessibility or SEO quality scanning of the content it delivers at the edge |
| Multi-site dashboard | ✓ Yes — 1–50 sites depending on plan | Limelight/Edgio can serve multiple properties under an enterprise account with property-level configuration and reporting; there is no multi-website front-end health dashboard showing WCAG compliance, SEO quality, or Core Web Vitals for websites delivered through Limelight/Edgio's CDN |
| Pricing for health monitoring | ✓ Free + from $9/mo for automated monitoring | Front-end health monitoring not available — Limelight/Edgio uses enterprise contract pricing based on traffic volume and feature set; no publicly listed pricing; custom quotes required; no WCAG or Core Web Vitals monitoring at any tier |
Get a full WCAG accessibility, Core Web Vitals, and SEO report in 30 seconds — free, no CDN account access required.
Yes — PageGuard scans any public URL regardless of the CDN infrastructure delivering it, including websites served through Limelight Networks or Edgio. Paste the public URL of your Limelight/Edgio-delivered website into PageGuard for a full health report covering WCAG 2.1 AA accessibility, Core Web Vitals performance, technical SEO quality, and best practices in about 30 seconds. No CDN portal access, Edgio account credentials, or configuration changes required.
No — Limelight Networks (now Edgio) is a CDN and streaming delivery platform. It has no built-in WCAG compliance checking, accessibility scoring, or ADA compliance monitoring for the web pages and video content it delivers. Limelight/Edgio processes requests at its edge PoPs and delivers cached or freshly fetched responses — it does not parse or validate the HTML content for missing alt text, ARIA landmark structure, keyboard navigability, or color contrast. Detecting WCAG violations on a Limelight/Edgio-delivered website requires an external audit tool like PageGuard.
Yes — websites delivered through Limelight/Edgio CDN face the same WCAG and ADA compliance requirements as websites on any other infrastructure. Limelight/Edgio delivers HTML pages and streaming content efficiently but performs no accessibility validation. Broadcasters, government agencies, educational institutions, and media companies serving content through Limelight/Edgio face ADA Title II and Section 508 compliance requirements with an April 24, 2026 deadline. An accessibility regression cached at Limelight/Edgio's 130+ global PoPs — missing alt text, broken keyboard navigation, insufficient color contrast — is immediately delivered at massive scale with no Limelight/Edgio alert. PageGuard detects these issues by auditing the live rendered HTML of the public URL.
No — they serve completely different purposes. Limelight Networks/Edgio is a global CDN and streaming platform that delivers content fast and reliably at enterprise scale, with purpose-built OTT streaming infrastructure and a private fiber network. PageGuard is an external quality monitoring tool that audits deployed web pages for WCAG accessibility compliance, Core Web Vitals performance, and technical SEO quality. Organizations using Limelight/Edgio for content delivery should also use PageGuard to verify that the pages delivered meet WCAG requirements — accessibility quality that CDN delivery infrastructure cannot enforce on the origin HTML content it serves.