Best Legacy Website Modernization AgencyModernization Agency
We rebuild legacy websites into fast, secure, modern platforms. Get a fixed-price MVP in 8-12 weeks.
IRPR is a software development studio specializing in legacy website modernization. We migrate aging PHP, jQuery, and monolithic CMS sites to modern stacks like Next.js, React, and Node.js.
Each modernization project ships in 8-12 weeks with a fixed price from $80K to $250K. We handle PCI-DSS and SOC 2 compliance for regulated industries.
Clients include CTOs of enterprise companies migrating from Drupal, founders of SaaS platforms needing to modernize their frontend, and VPs of engineering in fintech stuck with legacy ASP.NET sites.
Types of software we ship.
Legacy PHP to Next.js Migration
Replace outdated PHP monoliths with a modern Next.js frontend. Improves page speed 3x and enables headless CMS.
Drupal to React Replatform
Migrate Drupal 7/8 sites to decoupled React frontends. Reduces backend overhead and improves developer velocity.
WordPress to Jamstack Migration
Convert bloated WordPress sites to static Jamstack sites with Netlify, reducing server costs and improving security.
Custom CMS to Headless CMS
Replace proprietary CMS with headless CMS like Contentful or Strapi, enabling omnichannel content delivery.
Legacy jQuery UI to React/Vue Refactor
Rewrite janky jQuery UI dashboards into component-based React or Vue, cutting maintenance time by 50%.
Monolithic to Microservices Backend
Break apart a legacy Rails or Django monolith into scalable microservices with Docker and Kubernetes.
Legacy ASP.NET to Node.js Migration
Migrate aging ASP.NET Web Forms to Node.js and Express, reducing server cost by 40% and improving API performance.
Legacy Mobile Website to PWA
Convert old mobile sites into Progressive Web Apps with offline support and push notifications using Workbox and Service Workers.
We build for every business type.
Enterprise Tech
Small & Medium Business
Government & Education
Ecommerce & Retail
Supply Chain & Manufacturing
The Cost of Sticking with Legacy Technology
Legacy websites cost more in maintenance than modernizing.
A 2023 survey by Stripe found that companies spend 32% of their IT budget on maintaining legacy systems. For a mid-size enterprise, that can exceed $500K per year in developer time alone. Modernizing cuts that to near zero.
IRPR has modernized 200+ legacy sites across fintech, healthcare, ecommerce, and SaaS. Our average project ships in 8-12 weeks with a fixed price. Clients see an immediate 60% reduction in page load time and a 40% drop in security incidents.
Agency vs Modernization Partner
Not all dev shops can handle legacy website modernization.
Most agencies treat modernization as a simple redesign -- they swap CSS and call it done. That ignores the underlying architecture problems that caused the site to degrade in the first place.
IRPR treats modernization as a full rewrite with parallel run strategies. We extract business logic, eliminate tech debt, and ship a system that can scale.
- Rebuilds from scratch without understanding the business
- No migration plan; downtime during cutover
- Reskins the UI but keeps legacy database
- Uses hourly billing; no fixed price
- Doesn't handle compliance (PCI, HIPAA)
- Hands over code without CI/CD pipelines
- Reverse-engineers legacy logic into clean architecture
- Runs both systems in parallel; zero-downtime cutover
- Migrates data and schema to modern DB (PostgreSQL)
- Fixed price from Roadmap phase (week 2)
- Built-in SOC 2, HIPAA, PCI-DSS controls
- Delivers with GitHub Actions CI/CD and Sentry monitoring
Our Legacy Modernization Process
We follow a four-phase process to modernize your legacy website without business interruption.
Every project starts with an Idea phase to understand your legacy system's constraints. Then a Roadmap phase produces a fixed-price quote with a timeline. The Product phase builds the modern site while the legacy site stays live. Finally, the Release phase migrates traffic and decommissions the old system.
This approach has been tested across 200+ products in 50+ countries. The average project delivers in 8-12 weeks from kickoff to go-live.
What Ships with Every Modernization
Every project delivers a modern, maintainable system with no hidden dependencies.
- Source code in your private Git repository
- CI/CD pipeline on GitHub Actions or GitLab CI
- Cloud infrastructure on AWS or Vercel with Terraform
- Error tracking with Sentry and logging with Datadog
- Performance monitoring dashboard (Lighthouse score)
- Automated database migrations with proper rollback
- Updated documentation (architecture, deployment, runbook)
- Security audit report (OWASP, dependency scanning)
- One-year warranty on all code shipped
- 30-minute onboarding session for your internal team
What we ship in this practice.
Fintech Dashboard Migration from PHP to Next.js
A fintech company had a legacy PHP dashboard for payment reconciliation that loaded in 8 seconds. IRPR rebuilt it in Next.js with real-time WebSocket updates. Page load dropped to 0.8 seconds. Reduced manual data entry by 8 hours per week. Tech stack: Next.js, PostgreSQL, Stripe API, WebSockets.
Healthcare CMS Migration from Drupal 7 to React
A healthcare network's public site on Drupal 7 was slow and hard to update. IRPR migrated to a decoupled React frontend with Strapi headless CMS. Content publishing time fell from 4 hours to 15 minutes. HIPAA compliance maintained. Tech stack: React, Strapi, Node.js, AWS RDS.
Ecommerce Site Refactor from jQuery to Vue
An online retailer with a legacy jQuery frontend was losing mobile conversions. IRPR rewrote the frontend in Vue.js with server-side rendering. Mobile conversion rate increased 22%. Site now scores 95 on Lighthouse. Tech stack: Vue.js, Nuxt, Shopify API, Algolia.
SaaS Platform Migration from ASP.NET to Node.js
A B2B SaaS platform on legacy ASP.NET Web Forms was expensive to maintain and slow to iterate. IRPR migrated to Node.js with Express and React. Server costs dropped 40% and feature velocity doubled. SOC 2 compliance retained. Tech stack: Node.js, React, MongoDB, Docker.
Real Estate Portal Modernization from WordPress to Jamstack
A real estate portal with 500K monthly visitors was running on WordPress and crashing regularly. IRPR rebuilt as a static Jamstack site with Next.js and Netlify. Uptime went to 99.9% from 97%. Server costs reduced 60%. Tech stack: Next.js, Netlify, Contentful, Elasticsearch.
Manufacturing Intranet from Custom CMS to Headless
A manufacturing company used a 15-year-old custom CMS for its employee intranet. IRPR migrated to a headless CMS (Strapi) with a React frontend. Employee productivity increased by allowing mobile access. Data now syncs with SAP via API. Tech stack: React, Strapi, PostgreSQL, SAP Cloud Connector.
Why teams hire us.
Fixed price, not hourly
Every legacy modernization project gets a fixed quote during the Roadmap phase (week 2). No hourly billing, no surprise invoices. You know the total cost before we write a line of code.
Zero-downtime migration
We run your legacy site and the new build in parallel. Users see no interruption. We cut over with a DNS switch after validating the new system for 2 weeks.
We own the compliance roadmap
We have built systems for HIPAA, PCI-DSS, and SOC 2. Our modernization projects include compliance controls like encryption, audit logs, and role-based access.
We modernize the whole stack, not just the UI
Many agencies only reskin the frontend. We rewrite backend, database, and infrastructure. We replace monolithic databases with PostgreSQL and add CI/CD pipelines.
200+ products shipped, 50+ countries
We have delivered legacy modernizations for clients in fintech, healthcare, ecommerce, and SaaS. Our engineers are senior-level and work async-first with overlap in US time zones.
Full code ownership with warranty
You own all source code, documentation, and infrastructure from day one. We provide a one-year warranty on all code shipped. No vendor lock-in.
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.