Web interfaces since 2012
Transforming a design intention into a reliable experience
PartITech has been designing and developing tailor-made web interfaces since 2012. Our front-end work connects design, content, data and real uses to produce a fast, accessible and maintainable experience.
A successful interface is about more than just how it looks. It must remain understandable on the keyboard and with a screen reader, work on various screens and networks, load efficiently and allow teams to develop the product without multiplying exceptions.
- Since 2012
- Development of tailor-made interfaces
- Design and code
- Components designed to last
- Measurable quality
- Accessibility, performance and testing
Visible and invisible quality
What a professional front-end must guarantee
Interface choices have a direct effect on conversion, productivity, SEO, compliance and maintenance cost.
Clarity of routes
The hierarchy, labels, states and action feedback must guide the user without asking them to understand the system.
Integrated accessibility
Semantic structure, keyboard, focus, contrasts, forms and alternatives are treated from the components, with WCAG 2.2 as a reference.
Actual performance
JavaScript weight, images, fonts, rendering and cache are controlled from field measurements, including LCP, INP and CLS.
Responsive useful
The contents, gestures and priorities adapt to the context of use, beyond a simple reduction of the desktop model.
Mastered referencing
Semantic HTML, metadata, links, rendered content and structured data give engines usable information.
Predictable maintenance
Documented, tested and loosely coupled components reduce regressions and accelerate future developments.
The web platform first
HTML, CSS and JavaScript remain the foundation
A framework can structure a complex application, but it does not replace HTML semantics, mastery of CSS, or understanding of the browser.
Progressive architecture
The right level of JavaScript
We choose the level of interactivity necessary for each journey: server rendering, static generation, enriched components, complete application or combination of several approaches.
Choose a JavaScript architecture- Semantic HTML and usable content before enrichment.
- CSS organized around responsive components, tokens and rules.
- JavaScript loaded as needed, split and monitored.
- TypeScript when the domain and lifetime warrant it.
- Rendering chosen according to SEO, performance and interactivity.
Structure
Semantic HTML
Titles, regions, links, buttons, tables and forms that correctly express their function.
Presentation
Maintainable CSS
Robust layout, shared tokens and components that resist real content.
Interaction
Proportionate JavaScript
Useful interactivity without transferring complexity to the browser that can be handled elsewhere.
Industrialization
Design system
Rules and components shared between product, design and development, with their documented states and uses.
Complete components
Build all states, not just the ideal screen
Each component is designed with its variable contents, errors, loading, permissions and behaviors on the small screen.
Navigation and orientation
Menus, search, filters, pagination, breadcrumbs and progress markers consistent on keyboard and touch.
Business forms
Explicit labels, contextualized help, understandable validations and data retention in the event of an error.
Complex data
Tables, graphs and dashboards that are readable, filterable and usable on different devices.
Application states
Loading, no result, error, success, degraded mode and loss of connection are part of the functional scope.
Editorial content
Templates tolerant of long titles, missing media, different languages and real contributions from the CMS.
Connected interfaces
API consumption, authentication, rights and synchronization designed with explicit failure behaviors.
Quality controlled
Measurable objectives before going into production
Automated tools complement human testing
An isolated score proves neither accessibility nor real performance. We combine static analysis, automated testing, keyboard navigation, on-device verifications and observation of production data.
Thresholds are defined according to the product and its users. They become acceptance criteria rather than a late correction.
- Critical keyboard paths
- Screen reader on sensitive components
- Core Web Vitals and Resource Budget
- Browser and target device compatibility
- Unit, component and end-to-end testing
- JavaScript errors and tracking in production
Useful references: W3C WCAG 2.2 and presentation of Core Web Vitals.
From need to usable product
Our front-end development method
We make trade-offs visible early so that quality does not depend on a finishing phase at the end of the project.
Framing of uses
Users, journeys, content, devices, business constraints, performance objectives and expected level of accessibility.
Rendering Architecture
Distribution between server and browser, cache strategy, data, navigation and necessary level of interactivity.
Visual Foundations
Tokens, grids, typography, colors, spacing and responsive rules shared with the design.
Driver components
Construction of the riskiest components with their real states to validate the choices before generalization.
Iterative development
Regular deliveries, code reviews, tests and demonstrations on complete courses.
Cross-device testing
Keyboard, screen readers, browsers, phones, tablets and representative resolutions of the product.
Optimization
Analysis of loading, JavaScript, images, fonts, queries and slow interactions.
Transmission and tracking
Documentation, team support, deployment and observation of errors and actual performance.
A reusable base
What we deliver
- Front-end architecture and documented conventions
- Responsive components with their different states
- Tokens and design system integration rules
- Automated tests on critical paths
- Accessibility report and identified anomalies
- Performance metrics and resource budget
- Compilation and deployment procedure
- Contribution and maintenance documentation
PartITech Expertise
An interface designed for its next change
We work on the creation, redesign and takeover of existing applications. Our approach favors a robust web base, then adds the tools and frameworks that are really useful to the product.
This discipline makes it possible to reconcile quality of experience, business constraints and maintenance capacity over several years.