Best Legacy Website Modernization ServicesModernization Services
We rewrite old codebases into modern stacks. Fixed price, 8-12 weeks, full ownership.
IRPR specializes in legacy website modernization. We take old PHP, ASP.NET, or Java codebases and rebuild them in Next.js, React, or Vue with Node.js or Python backends. No band-aids, no wrappers - full rewrites with modern architecture.
Every project ships in 8-12 weeks for a fixed price between $80K and $250K. We handle compliance for healthcare (HIPAA), fintech (PCI-DSS), and SaaS (SOC 2). You get source code, CI/CD pipelines, and documentation.
Companies hire IRPR when their legacy site breaks on mobile, fails security audits, or takes weeks to ship a feature. Typical buyers are CTOs at mid-market companies, VPs of Engineering at SaaS firms, and Heads of Digital at ecommerce brands.
Types of software we ship.
Legacy PHP to Next.js migration
Migrate old WordPress, Drupal, or custom PHP sites to a modern React framework with SSR and static generation.
ASP.NET to React rewrite
Replace monolithic ASP.NET WebForms or MVC apps with a decoupled React frontend and Node.js API.
Java/JSP to Vue.js migration
Modernize enterprise Java-based web apps with Vue.js, improved performance, and a RESTful backend.
jQuery to modern JavaScript rewrite
Strip out legacy jQuery spaghetti and rebuild with vanilla JS, React, or TypeScript for maintainability.
Legacy ecommerce re-platforming
Migrate from Magento 1, Shopify Plus, or custom carts to a headless commerce stack with Stripe integration.
Flash to HTML5 conversion
Replace deprecated Flash-based websites and interactive content with HTML5, CSS3, and WebGL.
Legacy CMS migration to headless CMS
Move from Drupal 7, Joomla, or Sitecore to a headless CMS like Strapi or Contentful with a decoupled frontend.
Monolith to micro-frontends split
Break a monolithic legacy frontend into independently deployable micro-frontends using Module Federation.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Media and publishing
Why companies need legacy website modernization
Old websites cost more to maintain, load slower, and fail mobile tests.
A legacy website built on outdated frameworks like jQuery or ASP.NET WebForms can take 3x longer to add a simple feature. Every new hire spends weeks learning the old codebase. Security patches go missing. Google penalizes slow load times, hurting SEO rankings.
IRPR rewrites these sites in modern stacks like Next.js with TypeScript and PostgreSQL. We cut page load times by 60-80%. We add automated testing with Cypress and Playwright. Your team ships features in days, not months.
How IRPR differs from generic dev shops
Most agencies charge hourly and rewrite your code twice. We don't.
Generic dev shops quote hourly rates and inflate hours. They often over-engineer or copy-paste from old projects. They rarely deliver on time, and the code quality is inconsistent.
IRPR gives you a fixed price after a 2-week Roadmap phase. Senior engineers (10+ years experience) write every line. We ship clean, testable code with full documentation.
- Hourly billing with no cap
- Junior or mid-level developers
- No compliance expertise
- No CI/CD pipeline setup
- Code ownership often unclear
- Average 6-12 month delivery
- Fixed price from $80K
- Senior engineers only (10+ yrs)
- HIPAA, PCI-DSS, SOC 2 ready
- CI/CD on GitHub Actions included
- Full code ownership from day 1
- 8-12 week MVP delivery
Our legacy modernization process in 4 phases
We follow a repeatable process from audit to deployment.
Every project starts with a 2-week Roadmap phase. We audit your legacy codebase, define the target architecture, and lock the scope and price. No surprises.
Then we build the new site in 8-12 weeks with bi-weekly demos. You see working code every 2 weeks. We deploy incrementally or cut over in one go, depending on your risk tolerance.
What ships with every legacy modernization project
You own everything. No lock-in, no hidden fees.
When IRPR finishes your legacy website modernization, you get a complete package. Not just a new site, but everything your team needs to maintain and improve it.
We hand over source code in your private GitHub repo, CI/CD pipelines, automated tests, and architecture docs. Your team can take over immediately or we can continue on retainer.
- Source code in your private GitHub repo
- CI/CD pipeline on GitHub Actions or AWS CodePipeline
- Automated tests (unit, integration, e2e) with Jest and Cypress
- Deployment to AWS, Vercel, or your own servers
- Sentry error tracking and performance monitoring
- SEO audit report and structured data implementation
- Mobile responsive design with 95+ Lighthouse score
- Architecture documentation and runbook
- 30-day post-launch support and bug fixes
- Admin training session (2 hours, recorded)
What we ship in this practice.
Healthcare portal modernization
Rewrote a legacy ASP.NET patient portal for a 500-bed hospital. New React frontend with Node.js API. Reduced page load from 8 seconds to 1.2 seconds. HIPAA compliant with audit logging. Tech stack: React, Node.js, PostgreSQL, AWS.
Fintech dashboard rewrite
Migrated a Java/JSP financial reporting tool to Vue.js with Python FastAPI backend. Cut report generation time from 4 minutes to 12 seconds. PCI-DSS compliant. Tech stack: Vue.js, FastAPI, PostgreSQL, Redis.
Ecommerce re-platform from Magento 1
Moved a $20M/year ecommerce store from Magento 1 to a headless Next.js storefront with Shopify backend. Improved conversion rate by 15%. Stripe and PayPal integrated. Tech stack: Next.js, Shopify, Stripe, Vercel.
SaaS legacy codebase modernization
Rewrote a jQuery-based CRM for a 200-person SaaS company. New React app with TypeScript and GraphQL. Reduced bug count by 70%. SOC 2 compliant. Tech stack: React, TypeScript, GraphQL, Apollo, AWS.
Real estate MLS website upgrade
Modernized a legacy PHP MLS search site for a regional real estate board. New Vue.js frontend with Laravel API. Search results load in under 500ms. Integrated with MLS database via REST API. Tech stack: Vue.js, Laravel, MySQL, Redis.
Media website migration from Drupal 7
Migrated a news site with 2M monthly visitors from Drupal 7 to a headless CMS with Next.js. Improved Lighthouse score from 45 to 92. Ad revenue increased 12% due to faster pages. Tech stack: Next.js, Strapi, AWS CloudFront.
Why teams hire us.
Fixed price, not hourly
Every legacy modernization project gets a fixed quote after the 2-week Roadmap phase. No hourly billing, no surprise invoices, no scope creep charges. You know the cost before we write a line of code.
Senior engineers only
Our team averages 12 years of experience. No junior developers, no offshore interns. Every engineer has shipped at least 10 production applications. They handle legacy code, complex migrations, and compliance requirements.
8-12 week MVP delivery
We ship a working, deployable product in 8-12 weeks. Not a prototype, not a demo - production-ready code on your infrastructure. You can launch at the end of the engagement or continue with additional features.
Full code ownership
You own every line of code we write. No proprietary frameworks, no license fees, no vendor lock-in. The code is in your GitHub repo from day one. You can take over maintenance or hire any developer.
Compliance built-in
We build HIPAA, PCI-DSS, SOC 2, and FERPA compliance into the architecture from day one. Not bolted on after. We handle audit logs, encryption, access controls, and data residency requirements.
Modern tech stack by default
We default to Next.js, React, TypeScript, Node.js, and PostgreSQL. These are proven, well-documented frameworks with large talent pools. Your team can hire for these skills easily. No obscure frameworks.
Idea → Roadmap → Product → Release.
Every engagement runs through the same four-stage pipeline. Predictable by design.
Questions clients ask first.
Related services and industries.
Ready to build? Let's talk.
30-minute discovery call. No deck. We'll tell you honestly what it takes, how long, and how much.