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Creative media & digital growth partner

hello@aonebox.com

+91 93730 06900

Website Design & Development Company in Kolkata Built for Business Growth

As a website design and development company in Kolkata, we build every type of site — business website and ecommerce development, landing pages, portfolios, web portals, booking platforms, dashboards, and custom web application development — with clean UI, fast performance, and a scalable website backend structure.

CI4Modern PHP Framework
100%Responsive Layouts
SEOReady Structure
<CI4 />
SEO
Mobile First
Fast Loading
Secure Backend

Website Design and Development Company in Kolkata — Conversion-Focused, Built to Convert

Websites that look premium, load fast, and support real business goals. A website shouldn't just be a digital brochure — it should explain your offer clearly, build trust, generate enquiries, support campaigns, and make it easy for customers to act. We plan every page around user journey, content flow, search visibility, and conversion.

Every project includes custom website development with admin panel access, dynamic pages, forms, integrations, SEO-friendly website structure, and fully responsive website design across mobile, tablet, and desktop.

Web Development Services for Every Business Need

Choose a website type based on your goal, content, audience and required features.

Business Website

Our business website design services deliver professional company sites with service pages, enquiry forms, testimonials, gallery, blog, and SEO-ready structure.

Ecommerce Website

As an ecommerce website development company, we build online stores with product listings, categories, cart, checkout, payment gateway, order management, and full customer flow.

Landing Page

Our landing page design services create high-conversion single pages for ads, campaigns, lead generation, launches, offers, and service promotions.

Portfolio Website

Our portfolio website design covers premium personal, creator, photographer, model, artist, and agency portfolios with visual-first layouts.

Blog & Magazine

Our blog and content website development builds content sites with categories, authors, search, featured posts, article pages, and an SEO-friendly publishing flow.

Education Website

Our education and school website design covers institutes, coaching centers, and course websites with admission enquiry, course pages, notices, and student information.

Booking Website

Our appointment booking website development covers consultation, event, and service booking with lead management, custom forms, and admin control.

Web Portal

As a web portal development company, we build dynamic portals for listings, directories, membership, vendors, users, dashboards, and role-based access systems.

Custom CI4 Web App

Our custom web application development covers tailor-made applications with modules, database architecture, authentication, admin panel, and integrations — built on a secure, scalable backend.

Professional CodeIgniter Development Services

As a PHP web development company in Kolkata, using CodeIgniter 4, we build websites that are lightweight, organized, and easy to manage — a strong choice for businesses that need custom features without unnecessary bloat. Your website can include dynamic content, secure forms, database-driven pages, user modules, admin control, and future-ready expansion.

  • MVC website architecture — clean, organized development structure
  • Custom admin panel development — full content management, built around your needs
  • SEO-friendly website development — optimized URLs, meta tags, and schema-ready layout
  • Secure forms, validation, and database handling
  • Easy future upgrades for new modules and pages

What's Included in Our Website Design Services

01

Responsive Design

Our responsive website design delivers pixel-balanced layouts across mobile, tablet, laptop, and large desktop screens.

02

SEO Foundation

Every site includes an SEO-friendly website structure — meta setup, heading hierarchy, clean URLs, image alt text, and a search-friendly page flow from launch.

03

Admin Panel

A full website admin panel and CMS — manage pages, blogs, products, leads, banners, galleries, and content from one dashboard.

04

Lead Forms

Built-in website lead capture forms — contact, enquiry, quote, booking, newsletter, and campaign forms, all with validation.

05

Integrations

Seamless website integrations and CRM support — WhatsApp, payment gateways, maps, analytics, email, and other third-party tools.

Trusted Website Development Partner in Kolkata

Premium visual presentation

Your website gets a clean, modern, brand-focused interface that feels trustworthy from the first visit.

Built for enquiries and sales

Our conversion-focused website design places CTAs, forms, WhatsApp buttons, service blocks, and trust sections exactly where users naturally take action.

Custom development flexibility

With custom website development, we build tailored modules instead of forcing your business into a limited template structure.

Step-by-Step Website Design and Development Process

01

Requirement Discussion

We understand your business, pages, features, competitors, design taste, and conversion goals.

02

Content & Sitemap

Our website planning and sitemap stage maps page structure, navigation, content blocks, and key sections for every page.

03

UI Design Direction

Our UI/UX design direction creates a premium layout with colours, typography, cards, spacing, and visual hierarchy.

04

Development

We convert the approved layout into a responsive website development build, with a secure, scalable backend.

05

Testing & Optimization

Our website testing and optimization covers responsiveness, forms, links, speed, browser compatibility, SEO basics, and security.

06

Launch & Support

Our website launch and support includes deployment, analytics setup, essential submissions, and post-launch guidance.

Pick the right website scope based on your business stage.

Starter Website

Best for new businesses that need a professional online presence.

  • Up to 5 pages
  • Responsive design
  • Contact form
  • Basic SEO setup
  • WhatsApp integration
Enquire Now

Custom Web App

Best for portals, ecommerce, booking systems and custom business tools.

  • Custom CI4 modules
  • User/admin dashboard
  • Database architecture
  • Payment/API integration
  • Advanced testing
Build Custom

Mobile App development and web development services in diverse areas.

Our team of dedicated developers is committed to providing full-cycle Mobile App development and web development services in diverse areas such as E-commerce, retail, health, finance, IT, corporate, B2B / B2C, information portals etc.

Backed by the technical expertise, extensive business domain experience and profound knowledge of the latest industry, our website developers at mobile app development company a-one box are able to develop effective professional and corporate websites that cater to meet the challenges of a dynamic competitive landscape.

The websites designed by web development company a-one box feature customer-centric design and value proposition, allowing for two-way communication with the customers.

A leading web development company and mobile app development company

The products developed by web development company as well as a mobile app development company a-one box, are entirely integrated with social media and have features to deliver experiences to convert visitors into customers. This is how our brand is able to offer progressive, quality-driven model and end-to-end Web and mobile solutions.

Having extensive business domain experience, our web developers are super-efficient are able to understand clients business needs and requirements easily. Our knowledge reels from web development services, mobile app development to web design and integration to operating key processes.

We frame demonstrated mobile and web development methodologies and implement the best industry standards for every web and mobile app development project we undertake. Thereby, we guarantee to develop a relevant and user-friendly website and App for our clients.

Questions before starting your website?

Do you build websites in CodeIgniter 4?

Yes. We use CodeIgniter 4 for custom PHP websites, admin panels, portals, dynamic pages and scalable business web applications.

Can you build ecommerce websites?

Yes. We can build ecommerce websites with products, categories, cart, checkout, payment gateway, order management and admin controls.

Will the website be mobile responsive?

Yes. Every website is designed and tested for mobile, tablet, laptop and desktop screens.

Can I manage website content myself?

Yes. We can provide a custom admin panel so you can manage pages, blogs, products, banners, gallery, enquiries and other dynamic content.

Do you provide SEO setup?

We include SEO basics such as clean URL structure, meta fields, heading hierarchy, image alt text support and analytics integration. Advanced SEO can be added separately.

Ready to build a premium website?

Tell us what type of website you need and we will suggest the right structure, pages, features and development scope.

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