Web & Application Development
High-performance websites and full-stack web apps built on modern frameworks that ship the least JavaScript possible.
Web & Application Development at Prixelo covers everything from a marketing site to a full internal platform with dashboards and real-time data. We build marketing and brand sites in Astro or Next.js, single-page web applications and admin panels in React and TypeScript, installable progressive web apps that work offline, and content platforms on Sanity, Contentful, or Payload for teams that need to publish without touching code. When an existing site is slow, hard to maintain, or failing Core Web Vitals, we assess whether to modernize it or rebuild it outright.
This service fits two kinds of teams: companies that need a site or app built from scratch, and companies with something already live that's costing them conversions or engineering time. A SaaS company needing a customer portal, a marketing team needing a site that ranks and loads fast, an agency handing off a CMS its editors can actually run — all of that is one engagement, scoped to what's actually being built.
The approach stays consistent regardless of project size: pick the lightest framework that does the job, keep JavaScript off the critical path, and structure content and data cleanly so routine changes don't require an engineer every time. Pricing reflects that range directly — marketing sites start at $4,000, content platforms at $12,000, and full web applications at $30,000+, scoped to the complexity of what's being built rather than a flat rate.
Our process
Stack & Architecture
Assess whether the build is a marketing site, application, PWA, or CMS platform, then choose between Astro, Next.js, and React and define the TypeScript data model up front.
Design & Prototyping
Build interactive screens and component systems in TailwindCSS covering the key flows — dashboards, portals, content entry — before a line of production code ships.
Build & Content Integration
Develop the frontend in React, Next.js, or Astro, wire up Sanity, Contentful, or Payload schemas for editors, and implement real-time data, offline caching, or service workers as needed.
QA & Performance Launch
Audit Core Web Vitals, accessibility, and cross-device behavior, then deploy and monitor — the same pass we run when rescuing an existing site's speed and rankings.
What we offer
Marketing & Brand Sites
Lightning-fast, SEO-first sites built with Astro or Next.js that convert and rank
Web Applications
Data-driven SPAs, dashboards, portals, and admin panels with rich, real-time UIs
Progressive Web Apps
Installable, offline-capable web apps that behave like native software, no app store required
Headless CMS Builds
Content platforms on Sanity, Contentful, or Payload that editors actually enjoy
Redesign & Performance
Modernize legacy sites and rescue Core Web Vitals, speed, and accessibility scores
Technologies we use
Frequently asked questions
Related projects
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Web & Application Development
Web development is the work of planning, building, and launching websites and browser-based applications, from a marketing site to a full internal platform with dashboards and real-time data. At Prixelo, the service covers marketing and brand sites built in Astro or Next.js, web applications and admin panels in React and TypeScript, installable progressive web apps that work offline, headless CMS builds on Sanity, Contentful, or Payload, and redesigns of existing sites that are slow or failing Core Web Vitals. It suits companies that need a site or app built from scratch, and companies whose current site is costing them conversions or engineering time. Each project is scoped to what is actually being built: marketing sites start from $4,000, content platforms from $12,000, and complex web applications from $30,000+. SEO, accessibility, and performance are planned from the first architecture decision rather than added at the end, and ongoing maintenance is available after launch.
Questions buyers ask
What does web development include?
Web development includes choosing the stack and architecture, designing and prototyping key screens, building the frontend and any content or data integrations, and testing performance, accessibility, and cross-device behavior before launch. Depending on the project, that can mean a marketing site, a dashboard or customer portal, a progressive web app, or a headless CMS that editors can run without an engineer. Maintenance, performance monitoring, and feature work can continue after launch.
What is the difference between a website and a web application?
A website mainly presents content, while a web application lets users log in, work with data, and complete tasks. Marketing and brand sites are usually content-led, so a light framework such as Astro keeps them fast and easy to index. Dashboards, portals, and admin panels handle accounts, permissions, and live data, so they are typically built with React, TypeScript, and Next.js, and cost more because there is more logic to build and test.
When does a progressive web app make sense instead of a native app?
A progressive web app makes sense when people need an installable, offline-capable tool but you do not need deep device features or an app store listing. It runs from one codebase in the browser, can be added to a home screen, and keeps working on weak connections through service workers. If the product relies heavily on hardware access or store distribution, a native or cross-platform mobile app is usually the better fit.
What is a headless CMS and do I need one?
A headless CMS stores and manages content separately from the site that displays it, so editors publish through a dashboard while developers control the front end. It is worth it when a team publishes often, reuses content across pages or channels, or wants to update the site without waiting on an engineer. Prixelo builds these on Sanity, Contentful, or Payload. A small site that rarely changes may not need one.
Should I redesign my existing website or rebuild it?
It depends on whether the current codebase can reach your speed, accessibility, and maintenance goals. If the structure is sound, a focused redesign and performance pass is often enough. If the site is slow because of its framework, plugins, or heavy JavaScript, or every content change needs a developer, a rebuild on a lighter stack is usually cheaper over time. An audit of Core Web Vitals and the codebase comes first so the choice is based on evidence.