PerfReviews

@perf.reviews

496 Followers 127 Following

🇺🇸 Experts in web performance, we help you to solve performance issues 🇪🇸 Expertos en web performance, te ayudamos a solucionar problemas de rendimiento https://perf.reviews/

Screenshot of the PerfReviews Insights dashboard analyzing joanleon.dev with the “LCP” (Largest Contentful Paint) metric selected. The LCP value is 0.88 seconds, marked Good. The interface identifies the LCP element as a text paragraph with selector .astro-j7pv25f6 and size 40,592 px². The sidebar shows other performance checks including TTFB, images, videos, page weight, and external scripts.
"We worked with Joan for about a month, and his contribution was extremely valuable. He quickly analyzed our platform and identified numerous performance topics that needed attention, documenting and explaining each of them clearly. He also improved several aspects of our observability, helping us better understand what to monitor and why. Throughout the engagement, he shared his methodology transparently, which made it easy for the team to follow and learn from his approach. At the end of the mission, he delivered a comprehensive document outlining actionable improvements and future optimization opportunities we can explore. His work provided both immediate value and a clear roadmap for continued performance improvements."
Side-by-side screenshot showing a WebPerformance Report email with Core Web Vitals metrics and a highlighted “Need Expert Guidance?” call-to-action on the left, and a web form titled “Request Expert Guidance from our Technical Partners” on the right, where users can enter contact details and select technical partners (Digital Loop or PerfReviews).
A screenshot of a performance review interface titled “Perf Reviews” with the question “Which LCP phase was most problematic?” An AI assistant response shows analysis results indicating that the “Time to first byte (TTFB)” phase contributed 4,311 ms (92.8%) of the total 4,648 ms Largest Contentful Paint time, while “Element render delay” contributed 337 ms (7.2%). Below the response are action buttons such as “How can I reduce the time to first byte (TTFB)?” and “What caused the LCP element to render slowly?”
A collection of white rounded stickers displaying the PerfReviews logo, which features a black lightning bolt icon surrounded by green dots and a green curved line, with 'PerfReviews' text below. Five stickers are fanned out on a dark gray textured surface.
DebugBear web performance consulting landing page screenshot
Captura de pantalla de Chrome DevTools con un enorme cálculo de CSS y repintado
Captura de pantalla de la herramienta Treo.sh con los resultados de una web con bastantes opciones de mejora en la métricas de Web Performance
Andrés and Joan at the performance.now() conference
Andrés and Joan mirror selfie
Andrés and Joan mirror selfie
Andres waiting to help to perfnow attendees
Paul Calvano on Performance.now() conference
We Improve Your Website's Performance Increase your revenue and make your users happier with our web auditing and optimization services.