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Service: NITRO
4-6 WEEKS FIXED PRICE FULL CODE OWNERSHIP

Your SaaS is fast enough to retain users, rank on Google, and convert visitors into customers.

  • Lighthouse >90 across all pages
  • Core Web Vitals green in Search Console
  • 40-60% faster load times in 2-4 weeks
  • Zero visual regressions — pixel-perfect optimization

2 weeks — from Lighthouse 34 to 96, +28% trial signups

Read case study
Book a free 15-min discovery call Get a quote in 24h

No obligations. NDA on request. Response within 24h.

Figma
Tech Stack
Version 1.0
Lighthouse >90 CWV green ROI in 30 days
The cost of slow performance

Every millisecond of latency costs you users, revenue, and search rankings.

  • 53% of mobile users abandon sites loading >3s
  • Google ranks slow sites lower — Core Web Vitals are a ranking factor
  • Every 100ms of latency costs 1% of revenue (Amazon/Google data)
  • Poor performance kills trial-to-paid conversion by 20-35%

SaaS products with Lighthouse >90 see 23% higher trial-to-paid conversion on average.

Page Load Time vs. Conversion Rate

60% 45% 30% 15% 5% 4wk 8wk 12wk 6mo 12mo Fast (<2s load) Target zone
What we deliver

Everything you need to make your SaaS blazing fast — nothing you don't.

Core Web Vitals Audit

Full LCP, FID, CLS analysis across every route. Prioritized roadmap of fixes ranked by user impact.

Bundle & Code Splitting

Tree-shaking, lazy loading, dynamic imports. Reduce JS payload by 40-70% without losing features.

Image & Asset Optimization

AVIF/WebP conversion, responsive images, SQIP placeholders. Slash image weight by 60-80%.

Server-Side Rendering

SSR, SSG, and ISR strategies tailored to your routes. Faster TTFB, better SEO, instant perceived load.

CDN & Edge Caching

Edge functions, stale-while-revalidate, cache headers. Serve every page from the nearest PoP.

Performance Monitoring

Real User Monitoring (RUM), Lighthouse CI in your pipeline, alerts on CWV regressions.

Proof, not promises

From slow to blazing fast — here's how we've done it.

E-commerce SaaS

Problem

Multi-vendor marketplace with Lighthouse score of 34. Page loads averaging 8.2s on mobile, killing conversion rates.

What we did

Full bundle audit, image pipeline overhaul, SSR migration, and edge caching. Delivered in 2 weeks.

34→96

Lighthouse score

+28%

trial signups

-76%

page load time

Read full case study
B2B Platform

Problem

Enterprise SaaS dashboard with 12s LCP. Users abandoning complex workflows mid-task.

What we did

Code splitting, lazy-loaded charts, prefetching, and CDN layer. Critical path reduced to <2s.

-68%

LCP reduction

-45%

bounce rate

+22%

task completion

Read full case study
EdTech App

Problem

Learning platform losing trial users due to sluggish interface. Trial-to-paid conversion at 8%.

What we did

React hydration optimization, asset pipeline, SSR for landing pages, and RUM monitoring setup.

+35%

trial-to-paid CVR

94

Lighthouse score

-52%

TTI improvement

Read full case study

How we measure success

Lighthouse Score

Performance, Accessibility, SEO — all >90

Core Web Vitals

LCP <2.5s, FID <100ms, CLS <0.1 — green across all routes

Conversion Uplift

Measurable improvement in trial signups and activation

How we work

From audit to optimized in 5 transparent steps.

01

Audit

Lighthouse CI, WebPageTest, and RUM analysis across all routes. Outcome: prioritized performance roadmap.

2-3 days

02

Diagnose

Bundle analysis, rendering waterfall, critical path identification. You see every bottleneck before we touch code.

1-2 days

03

Optimize

Code splitting, image pipeline, SSR/ISR, caching strategies. Each fix tested against visual regression suite.

1-3 weeks

04

Verify

Lighthouse CI gate, CWV field data validation, cross-browser performance testing. Green metrics or we keep optimizing.

2-3 days

05

Monitor

RUM dashboards, Lighthouse CI in CI/CD pipeline, automated alerts on CWV regressions. Performance stays green forever.

Ongoing

Packages

Choose the scope that fits your performance needs.

Real result

An e-commerce SaaS used NITRO Sprint to go from Lighthouse 34 to 96 in 2 weeks. Trial signups increased by 28% the following month.

Performance Audit

Know exactly what to fix

1 week

  • Lighthouse CI analysis (all routes)
  • Core Web Vitals field data review
  • Bundle size & dependency audit
  • Rendering waterfall analysis
  • Prioritized optimization roadmap
Start Audit
RECOMMENDED

NITRO Sprint

Fast results, zero regressions

2-4 weeks

  • Performance Audit included
  • Bundle optimization & code splitting
  • Image & asset pipeline overhaul
  • SSR/ISR implementation
  • CDN & edge caching setup
  • Visual regression testing
  • Lighthouse >90 guarantee
Boost my SaaS

NITRO Retainer

Continuous performance excellence

Monthly

  • Everything in NITRO Sprint
  • RUM dashboards & alerting
  • Lighthouse CI in CI/CD pipeline
  • Monthly performance reviews
  • New feature performance testing
  • Priority Slack channel support
Stay fast forever

All packages include: detailed performance report, visual regression testing, and before/after Lighthouse comparisons.

Common concerns

Questions teams ask before optimizing performance.

Never. Every optimization runs against a visual regression test suite. We compare pixel-by-pixel screenshots before and after. If anything looks different, we catch it before deploy. Zero visual regressions is our standard, not an aspiration.
Lighthouse improvements are visible within days of deploying fixes. Field data in Search Console updates within 2-4 weeks. Most clients see measurable conversion uplift within 30 days of completing a NITRO Sprint.
The data is unambiguous: every 100ms of latency costs 1% of revenue (Amazon). Google uses Core Web Vitals as a ranking factor. Our clients typically see 20-35% conversion uplift — the ROI pays for the sprint within 30-60 days.
Possibly — but performance engineering is a specialty. Our team has optimized 50+ SaaS products and knows exactly which fixes yield the highest ROI. A NITRO Sprint typically achieves in 2-4 weeks what internal teams spend 3-6 months attempting.
Tech stack

Performance tools we trust. Results we guarantee.

Frontend

React Next.js Astro Svelte Qwik

Bundling

Vite Turbopack esbuild SWC

Monitoring

Lighthouse CI WebPageTest SpeedCurve Sentry

CDN & Edge

Vercel Edge Cloudflare AWS CloudFront Fastly

Images

Sharp next/image AVIF WebP SQIP
FAQ

SaaS Performance — key terms and answers.

Core Web Vitals (CWV)
A set of three Google metrics — Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS) — that measure real-world user experience. Google uses CWV as a ranking factor in search results.
Lighthouse Score
A 0-100 score generated by Google Lighthouse that audits Performance, Accessibility, Best Practices, and SEO. A score >90 is considered good. Lighthouse runs in Chrome DevTools, CI pipelines, and PageSpeed Insights.
Time to Interactive (TTI)
The time it takes for a page to become fully interactive — meaning the main thread is idle enough to handle user input within 50ms. Lower TTI directly correlates with higher user engagement and conversion rates.
We target >90 across Performance, Accessibility, and SEO for all routes. For critical landing pages, we aim for >95. Anything below 50 is considered poor by Google. Most SaaS products we audit start between 30-60.
A NITRO Sprint takes 2-4 weeks depending on codebase size and number of routes. Simple apps (10-20 routes) typically take 2 weeks. Complex platforms (50+ routes, heavy JS) take 3-4 weeks. Performance Audit alone takes 1 week.
No. Our optimization is pixel-perfect. We use visual regression testing to ensure every page looks identical before and after. The only difference your users notice is faster load times and smoother interactions.
Yes — NITRO Sprint includes a Lighthouse >90 guarantee for Performance score. If we don't hit the target, we continue optimizing at no extra cost until we do. We've never missed this target on a completed sprint.
Absolutely. We specialize in React ecosystem performance — Next.js, Remix, Gatsby, Vite-based SPAs. We also work with Svelte, Astro, and Qwik. Our approach adapts to your existing architecture without requiring rewrites.
We track three categories: (1) Technical metrics — Lighthouse scores, CWV, page load times. (2) Business metrics — conversion rate, bounce rate, session duration. (3) SEO metrics — search rankings, organic traffic. Every NITRO engagement includes before/after reporting across all three.
Let's talk

Ready to make your SaaS blazing fast?

Book a free 15-minute call or send us a brief. NDA on request. Response within 24h.

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