Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
- Triple validation: technical, pedagogical, sectoral.
- Minimum rating 4.8/5 over the last 12 sessions.
Describe your need, get a tailored program and a pre-filled quote in 3 min. A 100% free call with an advisor.
Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.
Don't let this gap widen
Without this upskilling, your team accumulates a technological gap that translates directly into productivity loss.
Organizations that don't train their talents on key topics see their competitiveness drop.
Every quarter without training is a gap widening with competitors who invest.
The cost of inaction quickly exceeds that of well-targeted training.
Dive into essential metrics like LCP, FID, and CLS to precisely evaluate real site performance, configure Lighthouse in advanced mode for automated audits, analyze real-world cases of slow e-commerce applications, perform your first complete diagnosis on a personal project with detailed reports and priority recommendations, transform these insights into a measurable action plan to boost user speed.
Master WebPageTest for multi-browser and geolocated tests, integrate GTmetrix into your daily workflows to score loading waterfalls, explore PageSpeed APIs for automated evaluation, apply these tools to real business sites, generate visual filmstrips and interaction heatmaps, produce a quantified comparative deliverable showing potential conversion gains through targeted optimization.
In-depth dissection of JS bottlenecks with Chrome DevTools Performance Panels, measure bundle execution times via Coverage and Lighthouse CI, optimize critical rendering by identifying long tasks, test on mobile with Throttle and 4G simulations, work on a case study of a slow React SPA, create a custom metrics dashboard to track evolutions in real-time and validate refactors.
Evaluate server response times with New Relic and Datadog APM, simulate traffic spikes via Artillery and k6 for advanced load tests, analyze slow SQL queries and memory leaks, integrate these tools into a GitHub Actions pipeline, apply to a real Node.js backend or GraphQL API, produce a predictive incidents report with alert thresholds, prepare your infrastructure to scale without costly downtime.
Deploy a complete observatory with Grafana and Prometheus for continuous RUM, configure Sentry to trace performance errors, automate alerts on Core Web Vitals degradation, review your throughout project with expert code review, synthesize learnings into a certified portfolio, prepare business KPIs to convince your management, leave with a ready-to-use evaluation script for your daily business missions.
The Training Performance Evaluation - Optimizing the Speed of Web Applications program is delivered onsite or remote (blended-learning, e-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.
The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.
For the smooth delivery of the Training Performance Evaluation - Optimizing the Speed of Web Applications program, the following equipment is required:
For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.
Assessment of skills acquired during the Training Performance Evaluation - Optimizing the Speed of Web Applications program is performed through:
Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.
Learni programs are available inter-company and intra-company, onsite or remote. Enrollments are possible up to 48 business hours before the program starts. Our programs are eligible for corporate funding paths. Contact us to discuss your training project and funding options.
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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Cartographie & SIGIndustry-certified30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.