What Other Agencies Say:
The Protocloud Difference:
No performance SLA 
Lighthouse 90+ on all 4 metrics - in contract 
HTML5 performance audits and remediation start from $5,000–$10,000 for focused Core Web Vitals fixes. Full HTML5 website rebuilds with semantic structure, WCAG compliance, and PWA features range from $20,000–$60,000. Canvas/WebGL interactive experiences and enterprise-grade HTML5 platforms range from $60,000–$120,000+. All pricing is fixed – written quote before any development begins.
A focused Core Web Vitals and semantic HTML5 audit + fix takes 4–6 weeks. Full site HTML5 rebuilds with PWA and WCAG compliance run 8–16 weeks. Complex Canvas/WebGL interactive experiences may take 12–20 weeks. All timelines are fixed in our contract.
We target Lighthouse 90+ on all four metrics (Performance, SEO, Accessibility, Best Practices) on every new HTML5 build. For remediation projects, we agree realistic target scores at project start based on your platform constraints. All targets are written into the contract.
Yes – most Core Web Vitals and semantic HTML5 improvements can be done incrementally. We assess whether targeted fixes (critical CSS, image optimisation, semantic element replacement, ARIA addition) will achieve your targets, or whether the technical debt requires a partial or full rebuild. We’ll give you this assessment honestly during the free strategy session.
WCAG 2.1 AA requires 50 specific criteria across four principles: Perceivable, Operable, Understandable, and Robust. The most impactful HTML5 requirements are: semantic elements for screen readers, 4.5:1 colour contrast ratio for text, keyboard navigability for all interactive elements, ARIA labels for dynamic content, and text alternatives for non-text content. We audit against all 50 criteria and fix any failures.
Significantly. Semantic HTML5 structure tells Google what each part of your page means – improving crawl quality and content understanding. Schema.org structured data targets rich results. Core Web Vitals are a Google ranking factor. PWA features reduce bounce rate. A well-executed HTML5 build typically delivers 40–80% organic traffic improvement within 90 days of launch.
Webflow and WordPress are excellent for simple marketing sites. But if you need Lighthouse 90+, WCAG 2.1 AA compliance, PWA features, custom Canvas/WebGL, or structured data schemas beyond basic plugins – custom HTML5 is the only path. We’ll tell you honestly during the strategy call if a page builder is actually the right answer.
🛡 Guarantee: If we recommend Webflow or WordPress during our strategy call, we will tell you – even if it means you don’t hire us.
We define minimum Lighthouse score targets in the contract. We set up Lighthouse CI to block score regressions in your deployment pipeline. If scores drop post-launch within the 3-month support window, we fix the cause at no charge.
🛡 Guarantee: Lighthouse Score Guarantee: If Lighthouse scores drop below agreed thresholds within 3 months of launch, we fix the cause at zero cost.
WCAG 2.1 AA compliance is an agreed acceptance criterion. We run both automated (axe-core) and manual screen reader testing before sign-off. If issues are found post-launch within the support window, we remediate at no charge.
🛡 Guarantee: WCAG 2.1 AA Guarantee: We stand behind our accessibility work. Issues found within 3 months of launch are fixed at zero cost.
Our fixed-timeline guarantee means we absorb cost of delays caused by our team. If we underestimate complexity, we continue at no additional cost until the agreed scope is complete.
🛡 Guarantee: Fixed Timeline Guarantee: Protocloud-caused delays are absorbed by us – no extra billing.
Acceptance criteria are defined at project start and included in the contract. The project isn’t done until all criteria are met. We iterate within scope at no extra cost.
🛡 Guarantee: 100% Satisfaction Guarantee: Final payment only required once you confirm all agreed acceptance criteria are met.
