Find out why it's slow first
Guessing at performance wastes money. The right first step is measurement: what's the largest element that's slow to paint, which scripts are blocking, how big are the images, and where does the time actually go on real devices and connections.
We profile the app with field data and lab tools, then rank the issues by impact. You get a clear picture of the real bottlenecks before a single change is made.
- Measure Core Web Vitals from real users, not just a lab test
- Identify render-blocking scripts and oversized assets
- Check server response time and time to first byte
- Find unused code and heavy third-party scripts
- Prioritize fixes by impact, not guesswork
The fixes that move the needle
Most slow sites share the same culprits: large unoptimized images, too much JavaScript loaded up front, slow servers, and heavy third-party tags. The fixes are well understood — the skill is applying the right ones in the right order.
We optimize images, split and defer JavaScript so only what's needed loads first, add caching, and trim the third-party weight that's dragging the page down.
- Compress, resize, and lazy-load images and video
- Code-split and defer JavaScript so the page paints sooner
- Add server, CDN, and browser caching
- Reduce or defer heavy third-party scripts
- Preload critical assets and fonts
- Cut layout shift by reserving space for media
How PWA architecture helps
A PWA adds tools a normal site doesn't have. The service worker caches your app shell and assets, so repeat visits load almost instantly from the device instead of the network. Smart prefetching makes the next tap feel immediate.
It won't fix a slow server or a bloated first load on its own — those still need real work — but layered on top of a properly optimized site, it turns a fast site into one that feels instant. We'll show you your current numbers and a target in a free consultation.
- Service worker caching for near-instant repeat visits
- Prefetching likely next pages for instant navigation
- App-like transitions instead of full-page reloads
- Offline resilience on flaky connections
- Best results when paired with real first-load optimization
More on progressive web apps
Frequently asked questions
Why is my web app slow?
Usually a mix of oversized images, too much JavaScript loading up front, a slow server response, and heavy third-party scripts. The only way to know your specific causes is to measure — we profile your app with real field data and rank the bottlenecks before recommending fixes.
Does making it a PWA fix a slow site?
Partly. A PWA's caching makes repeat visits dramatically faster and navigation feel instant, but it won't rescue a slow server or a bloated first load by itself. The biggest wins come from real optimization work; the PWA layer then makes an already-fast site feel instant.
How much faster can you actually make it?
It depends entirely on what's slowing it down now, which is why we measure first. We'll show you your current Core Web Vitals, identify the specific issues, and set a realistic target — no vague promises. You'll see the before-and-after in real numbers.