If you are planning a site revamp, you are likely juggling many questions. How do you raise conversions without bloating scope? Which design decisions actually move numbers? What timeline and budget should you plan for in Singapore? This guide brings clarity. You will learn how mobile-first performance, accessible UX, and consistent design systems combine to lift conversions, how to align with Core Web Vitals and analytics, and what to include in your pre-redesign checklist.
What a modern web design agency actually does
A capable web design agency is more than a team of visual designers. The right partner maps your funnel, simplifies journeys, and builds a site that loads fast, ranks cleanly, and measures outcomes. In practice, core web design services cover:
- Discovery and strategy, stakeholder interviews, user research, analytics review, and prioritised requirements.
- Information architecture, navigation structure, content hierarchy, and search-led site mapping.
- UX and UI design, mobile-first wireframes, high fidelity design, and accessibility standards.
- Component-based design systems, reusable patterns, tokens, and documentation for consistency.
- Performance engineering, image optimisation, CSS and JS hygiene, caching rules, and CDN setup tied to Core Web Vitals.
- CMS build and integrations, from blog and landing pages to forms, CRM, and marketing automation.
- Analytics and tracking, event design, consent management, dashboards, and QA.
- CRO and iteration, A/B testing cadence, and UX refinements to steadily improve conversion rate.
If you are assessing vendors, a web design agency should show how each of these pieces protects or improves your ROAS, not just how the site will look.
UX heuristics that protect revenue
Good UX is systematic, not subjective. Use proven heuristics to reduce friction and decision anxiety:
- Clarity first: front load value, who it is for, and what to do next. Every page needs a single, primary call to action.
- Recognition over recall: visible navigation labels, descriptive buttons, and familiar patterns reduce cognitive load.
- Progressive disclosure: reveal detail as needed, keep forms short, and collapse secondary information.
- Error prevention and recovery: clear inline validation, undo options, and forgiving inputs for mobile.
- Consistency and standards: consistent placements for CTAs, icons, and messaging build trust and speed up decision making.
- Accessibility by default: adequate contrast, keyboard navigation, alt text, and semantic structure benefit everyone and improve SEO signals.
Apply these principles to your information architecture. Group content by user intent, not internal org charts. Keep top level navigation tight, pair short labels with clear mega menu groupings, and provide search that handles typos and synonyms.
Design systems that scale quality
What are the design systems? A design system is your shared language of components, patterns, tokens, and usage rules. It ensures teams can ship new pages quickly without breaking consistency.
Examples of design systems you can learn from include Material Design, Polaris by Shopify, and Lightning Design System by Salesforce. Your system does not need to be as large. Aim for:
- Tokens, colour, spacing, type, elevation, and interaction states.
- Core components, buttons, inputs, cards, modals, tabs, accordions.
- Page patterns, hero sections, product listings, FAQs, pricing tables, and blog templates.
- Documentation, usage guidance, accessibility notes, and code references.
Component-based design ties directly to conversion. You can A/B test a CTA module once, then roll the winning variant across the site. You can introduce a performance fix into a component, then see load-time gains cascade across every page using it.
Speed and Core Web Vitals, the technical edge
Faster pages convert better. Core Web Vitals provide a measurable standard:
- LCP, Largest Contentful Paint, under 2.5s keeps perceived speed high.
- INP, Interaction to Next Paint, under 200ms keeps interactions snappy.
- CLS, Cumulative Layout Shift, near zero prevents jarring jumps.
Practical ways to hit these targets:
- Optimise images, modern formats like AVIF or WebP, responsive sizes, and lazy loading.
- Inline critical CSS and defer non critical scripts; remove unused libraries.
- Use server side caching and a tuned CDN; compress and preconnect to critical domains.
- Reduce render blocking requests; prioritise fonts with fallbacks and font-display swap.
Pair performance work with analytics. Track page speed next to bounce rate, scroll depth, form completion rate, and revenue per session to link engineering effort to outcomes.
Mobile-first accessibility that drives conversions
Most SEA traffic is mobile. Design for thumbs with large tap targets, 16px minimum body text, and clear focus states. Keep forms short and forgiving. Use device-appropriate input types, numeric keyboards for phone fields and date pickers for dates. Accessibility is not optional. It improves completion rates and protects brand equity with all audiences.
Analytics, measurement, and iteration
Define events that mirror your funnel, view product, add to cart, start checkout, complete order, or for B2B, key page viewed, form started, form submitted, MQL created. Align these with your CRM stages so your team can measure pipeline, not just clicks. Create dashboards that surface:
- Speed metrics vs engagement, LCP and INP correlated to bounce and conversion.
- Drop off by step, which fields or steps cause abandonment.
- Template performance, which components or page patterns win.
Commit to a testing cadence. Ship at least one template level test per month and one strategic offer test per quarter. Small wins compound.
Three common types of web design
You may hear these categories during scoping:
- Static or brochure sites, simple, low maintenance, best for early stage validation and brand presence.
- CMS driven sites, flexible content, blog, landing pages, and marketing integrations.
- Web applications, complex interactions, dashboards, personalisation, and logged in experiences.
Most marketing sites sit in the CMS category with a set of reusable components and targeted templates.
What a web designer does day to day
Web designers translate goals into usable interfaces. They map journeys, create wireframes, design components, and collaborate with developers to deliver responsive layouts. The best designers validate with data, reviewing heatmaps, session replays, and form analytics to improve flows after launch.
Budget and timelines in Singapore
Scope drives cost. As a planning baseline for Singapore:
- Small brochure site, 4 to 6 weeks, from S$10k to S$25k depending on brand and content needs.
- Mid sized marketing site, 8 to 14 weeks, from S$30k to S$90k including UX, design system, CMS build, and integrations.
- Enterprise or multi market build, 12 to 24 weeks, from S$100k and above with complex templates, localisation, performance engineering, and analytics.
Hosting, content production, translation, and ongoing CRO or SEO programs are typically separate. Ask agencies to itemise performance work and analytics setup; these have direct impact on ROI.
Pre redesign checklist
Use this to kick off with clarity:
- Goals and KPIs, revenue targets, lead quality, and specific conversion lifts.
- Audience and journeys, top tasks on mobile and desktop, and key objections to address.
- Content and IA, inventory of existing pages, gaps, and a draft site map anchored to search intent.
- Design system scope, list of components and patterns to build first.
- Accessibility and compliance, contrast, keyboard navigation, alt text, and PDPA consent flows.
- Performance targets, Core Web Vitals thresholds and test environments.
- Analytics and events, tracking plan, consent banner, dashboards, and QA steps.
- SEO alignment, redirects, structured data, canonical rules, and indexability.
- Timeline and resourcing, decision makers, review cadence, and content responsibilities.
- Post launch plan, A/B testing, backlog of improvements, and maintenance routines.
Bringing it together with a partner
If you want a team that blends UX, performance, technical SEO, and measurement, explore WE Interactive, a social media and performance agency in SEA. We design and build performance first sites, align technical SEO, and implement analytics you can trust. Learn more about our web design services, or connect to align your redesign with conversion goals and peak season timelines.
You can also explore how our technical SEO work dovetails with site builds to protect rankings and improve crawl health, and how analytics setup supports clean attribution for paid and organic channels.
Internal links
- Explore our web design services at: web design services
- For ongoing technical SEO alignment, see: seo services
- Need analytics ready builds with CRO in mind? Our team of web designers can help
Summary
High converting sites are the sum of many well executed parts. Start with mobile-first UX grounded in heuristics and accessible patterns. Build a lean design system so your team can ship quickly and consistently. Engineer for speed with Core Web Vitals as your compass, and tie every change to analytics that measure real outcomes. Plan realistic timelines and budgets for the Singapore market, and enter your project with a clear, shared checklist. Do this and your next redesign will not just look better, it will sell better.