The customer chooses alone.
On the site they pick the building type, the film type and the film, and enter the window measurements. For the first time, sales gets everything it needs, with no phone call.
RSN
Window film installation in Trzin. Two projects: a new website that shows the customer which film is right, and an app that cuts the film with the least waste.
The films look similar.
The difference between a film that reflects heat and one that holds shattered glass together is in the technical data sheet. Customers don't read it, so they call.
Who
RSN Media in Trzin installs solar, security and decorative window films: for homes, offices, shops, schools and warehouses.
What wasn't working
Customers had to call and ask which film, how much it costs, what's even possible. Everything by hand, every call from scratch.
Goal
A site that shows the difference before the customer calls, and prepares the inquiry so it's clear from the first message what they need.
Same company, different website.
Filmed the same day. Slide forward and the old rsn.si turns into the new site.
BeforeA generic slogan and icons for every service. Someone looking for window film doesn't know if they're in the right place.
NowWindow films, three types each with its own problem, and a path to an inquiry right on the first screen.
What was built.
Only numbers you can check on the site or in the system.
17
days from the restart to the full website
September 7 to 24, 20266
steps in which the customer builds an inquiry
configurator with 3D view78
films in the catalog, values from the manufacturer's data sheets
26 families, filters, comparison97.1%
roll utilization in a real cutting system calculation
run from Jun 2026One inquiry, from the website to the machine.
The website and the cutting app are two projects, but one path. We follow a single order: the same film and the same measurements go through every step.
The inquiry arrives complete.
Sales gets the film, measurements, installation and contact details in one place. No more calling back for missing information.
Same measurements, into the app.
Sales enters the film and measurements into the cutting app. The app has everything it needs for the calculation: film, measurements, number of pieces.
Pieces onto the roll, with the least waste.
The app tries different layouts, rotates pieces and picks the roll width. A person confirms the plan.
The plan goes to the machine.
A PDF for the installer, a DXF for the machine, the run gets saved. From a click on the website to a piece on the machine, the same information runs through it all.
What the customer sees on the site.
The site step by step, as the customer sees it: from the homepage to the inquiry, and finally the cutting system already working in the company.
Immediately clear what they do.
Window films, three types, each with its own problem: heat, privacy, security. No generic slogans.
A difference you can see.
Each type has a live 3D view of the glass and numbers from the data sheet: how much heat it reflects, how much UV it blocks, how many years it lasts.
78 films in one place.
Filters by type and look, comparison of up to three films, data sheets. Values are official, from the manufacturer's database.
Who they've already worked for.
29 projects with photos and descriptions from RSN's own records, sorted by building type.
The customer builds it themselves.
Six steps: building, type, film, measurements, installation, contact. On the right, the chosen film shows live on the glass. At the end, the inquiry with all the details goes to sales by email.
Pieces onto the roll, with the least leftover.
The app that's been running at RSN since June: an order comes in, the system arranges pieces on the roll, a person confirms it, the plan goes to the machine.
Less film in the trash.
Film is bought in rolls of three widths. Figuring out how to arrange pieces so as little as possible is left over used to be done by hand, with Excel and a calculator.
Input
Sales enters the pieces (measurements and quantities), picks the film and the available roll widths: 122, 152.4 or 182.9 cm.
Calculation
The algorithm tries several layouts, rotates pieces when needed, and picks the width or combination of two widths where waste is lowest.
Output
A person confirms the plan. The app prepares a PDF for the installer, Excel and DXF for the machine, and the cut gets logged.
Real order, film waste
When the system started combining two roll widths (152.4 and 122 cm) in June, the same order used less film.
Before, one width
39%
Now, two widths
32%
In testing with combined widths, waste dropped from 34 to 19%. Source: system runs, June 9 to 11, 2026.
From the first version to the full website.
It didn't happen in one move. First the cutting system, then the search for the right direction for the site, then a fresh start and 17 days of building.
Cutting system
Film roll-cutting optimization runs in the company every day. Fixes in June and July after the first weeks of use.
First version and searching for direction
Five design directions, none right for RSN. Instead of patching a bad direction: a stop.
Fresh start and build
The site from scratch, with one goal: the customer must understand the difference between films without calling.
First version, seven rounds of edits
Site online by the second day. First presentation to RSN's director, edits based on his feedback.
Images and search engines
Real photos of installations, the manufacturer's library, AI only where there's no photo available. A layer for search engines.
Catalog, measuring guide, configurator
78 films in one database, a glass measuring guide, and a six-step inquiry.
Full website
All ten pages, the catalog, configurator and 3D view live, handed over to the directors.
The tech, in plain terms.
For those curious how it's built.
3D glass
The view runs in the browser, no plugins. For each film type it shows its problem: heat, privacy or impact.
One film database
The catalog, comparison and configurator all read from the same database. A new film gets added once and appears everywhere.
Search engines
Page descriptions, data for Google, a sitemap, and a file for AI search engines.
Accessibility
Lighthouse on mobile: 71 before, 97 now.
Cutting
A web interface for input, calculation on n8n, the plan as PDF, Excel and DXF, and a record of every run. Fixes in June: combining widths, spacing between pieces, checking for oversized pieces.
Both projects are complete.
Open website ↗The site with the catalog, configurator and 3D view is built. The cutting app has been running in the company every day since June.
FizioTea
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