Migrate Your Existing Website to a PWA Without Rebuilding From Scratch

You do not need to rewrite your application to get PWA capabilities. We add service workers, offline support, installability, and push notifications to your existing web application incrementally, delivering each capability as it is ready while your current site continues running.

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68%

increase in mobile traffic after PWA migration, with companies like Twitter, Pinterest, and Trivago seeing engagement improvements within weeks of launching their PWAs

Google, 2020

PWA Migration

Incremental migration of existing websites and web applications to progressive web apps with service workers, offline support, installability, and push notifications added without requiring a full rebuild.

Smartphone displaying popular social media apps like Instagram, Pinterest, Twitter, and Snapchat.

What's Included

Everything you get with our PWA Migration

Migration Assessment and Planning

Audit of your existing application architecture, identification of PWA-compatible patterns, migration roadmap with phased delivery, and risk assessment for each migration step

Service Worker and Caching Layer

Service worker implementation layered onto your existing application with caching strategies designed around your current URL structure, API patterns, and asset pipeline

Installability and Push Integration

Web app manifest, install prompt, push notification subscription, and background sync added to your existing application without changing your current deployment or hosting

Our PWA Migration Process

Application Audit

We analyze your existing architecture: framework, routing, API patterns, asset pipeline, hosting, and deployment. We identify which PWA features are compatible with your current setup and which require changes.

Migration Roadmap

We prioritize PWA features by impact and implementation complexity. We define phases with specific deliverables: Phase 1 is typically HTTPS and service worker caching, Phase 2 is manifest and installability, Phase 3 is push and offline data.

Incremental Implementation

We implement each phase, testing thoroughly before deploying. Service workers are added without changing existing functionality. Each phase is deployed independently so the current site continues working throughout the migration.

Verification and Measurement

We run Lighthouse PWA audits after each phase, measure the impact on engagement metrics, and verify cross-platform compatibility. We document the performance improvements and plan next phases based on results.

Key Benefits

PWA capabilities without a full rebuild

Service workers layer on top of your existing application. The manifest file is a single JSON addition. Push notifications add a subscription flow. None of these require rewriting your application logic, changing your framework, or migrating your database.

Incremental delivery with immediate results

Each PWA capability is independent. Service worker caching is delivered first for instant performance gains. Installability follows. Push notifications come next. Each phase delivers measurable improvements while the next phase is in development.

Reduced native app maintenance burden

If you maintain separate iOS and Android apps alongside a website, PWA migration lets you consolidate to a single codebase. Twitter, Pinterest, and Starbucks replaced their native mobile web experiences with PWAs and saw better engagement metrics.

Research & Evidence

Backed by industry research and proven results

PWA Impact Study

Companies migrating to PWAs see 68% more mobile traffic, with Twitter Lite achieving 65% more pages per session and Pinterest seeing 60% more ad revenue post-migration

Google (2020)

Developer Time and Technical Debt

42% of developer time goes to technical debt and maintenance, and PWA migration provides an opportunity to reduce debt while adding modern capabilities

Stripe (2018)

Frequently Asked Questions

Can any website become a PWA?

Any website served over HTTPS can add PWA capabilities. The scope of what you can add depends on your architecture. Static sites get excellent caching and offline access. Server-rendered sites add installability and push easily. Single-page applications get the full range of PWA features including offline data sync and background processing.

Do we need to change our hosting or framework?

Usually not. Service workers and manifests are static files served alongside your existing application. Push notification backends can run as a separate microservice. The only hard requirement is HTTPS, which most modern hosts provide. We work with your existing infrastructure.

Will PWA migration break our existing site?

No. Service workers are additive. They intercept network requests but fall back to normal network behavior by default. We implement PWA features in a way that degrades gracefully: if the service worker fails or is not supported, the site works exactly as it did before.

How long does PWA migration take?

Phase 1 with HTTPS verification, service worker caching, and basic offline support takes 2 to 4 weeks. Adding installability and manifest takes 1 to 2 weeks. Push notifications take 2 to 4 weeks. Complete migration with offline data sync takes 6 to 12 weeks total with incremental delivery.

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Add PWA Capabilities to Your Existing Application

Share your current website or application URL. We will audit it for PWA readiness and design the migration plan that delivers the biggest impact first.

Plan Your PWA Migration