LG Sonic
Multilingual B2B website
7Fridays built the multilingual website of LG Sonic, a Dutch company that controls algae in lakes and reservoirs with ultrasound instead of chemicals. The site runs in 7 languages with about 1,100 pages in each, and its industry pages, product pages and case studies all lead to one request: an assessment of the visitor’s own water.
We worked on it from 2019 to 2025 and built three versions: a simple site strong on SEO and text in 2019, a more complex one that added the other languages in 2021, and in 2022 a full rebuild with animation that grew into the large site it is today. LG Sonic’s team provided the page designs. We designed the animations in Adobe After Effects, built them into the site in code, and built everything else: the custom WordPress theme made of reusable blocks, the content structure, the translation setup and the lead forms. For the last three years we handled small fixes as they came up.
LG Sonic works with more than 100 water and energy utilities in over 60 countries. The site has to speak to each of them in their own language: 136 case studies, 55 application pages and pages for each country and industry.
Website: lgsonic.com
- Client
- LG Sonic
- Industry
- Water technology, algae control
- Year
- 2019 to 2025
- What we did
- Multilingual website, three versions, support
- Built with
- WordPress, WPML, ACF PRO, After Effects
How the site turns research into leads
Built for B2B buyers
Buyers at water utilities research for months before they call. The site gives each of them a page for their industry, proof from projects like theirs, and one clear next step.
Industry and application pages
Drinking water reservoirs, mining, hydroelectric dams, irrigation, wastewater and more, each with its own page that links to the products and cases that fit.
Why it matters
A visitor from a mining company lands on mining, not on a general product page.
A library of 136 case studies
Every project is its own page, so industry and product pages can point to proof from the same field, in every language.
Why it matters
Engineers trust results from a reservoir like theirs more than any sales text.
One next step
Industry, product and case pages lead to the same request: an assessment of the visitor’s own water.
Why it matters
Seven languages and 1,100 pages each, and every one of them ends in a lead.
The site in numbers
lgsonic.com, November 2026
- 7
- languages
- ~1,100
- pages in each language
- 136
- case studies
- 3
- versions of the site since 2019
Animations in code
We designed the animations in Adobe After Effects, then built them into the site in code, so they play in the browser, stay sharp on any screen and load as part of the page, not as heavy video files.
From After Effects to the browser
What we built
7 languages with WPML
7languages
English, Spanish, Portuguese, French, German, Dutch and Italian, run with WPML, a WordPress translation plugin. Every language has its own addresses, so search engines index each version.
Reusable blocks
~1,100pages per language
Reusable blocks were one of LG Sonic’s technical requirements. At the time we built them with ACF PRO flexible content; today our standard is native Gutenberg blocks. Case studies, several article formats and their own post types are put together from the same blocks, without a developer.
Great work. Good communication. Highly recommend for any WordPress development work.
Three versions in six years
2019 to 2025
-
2019: the first version
A simple WordPress site, strong on SEO and text, so LG Sonic could be found by the people searching for algae control.
-
2021: the second version
A more complex site, and the first in several languages, set up with WPML. Still without animation.
-
2022: the third version
A full rebuild with the After Effects animations in code. It grew into a large site in 7 languages: case studies, several article formats and their own post types, all built from reusable blocks.
-
2023 to 2025: support
Small fixes as they came up, so LG Sonic’s team could keep publishing in seven languages.
Building a multilingual website
Questions, answered from this project
How do you build a website in 7 languages?
On LG Sonic we used WordPress with WPML, a translation plugin. Every page has a version in each language at its own address, and the team publishes and translates from one admin.
How long does it take to build a multilingual website?
The 2022 rebuild of LG Sonic's site, with animation and 7 languages, took us about two months. AI models have improved a lot since then, and with them in our workflow we would build the same project today in roughly half the time.
How do you do SEO for a multilingual website?
Give every language its own addresses and tell search engines how they connect. On LG Sonic each language has its own folder (/es/, /de/, /nl/ and so on) with hreflang tags set through WPML, so Google shows each visitor the right version. The first version, in 2019, was built around SEO and text, and that focus carried through to the multilingual site.
Can a multilingual site with over 1,000 pages per language stay manageable?
Yes, if the content has structure. LG Sonic's case studies, articles, products, applications and country pages each have their own type, and every page is built from the same reusable blocks, so a new page falls into place in every language without a developer.
What are reusable blocks, and why do they matter?
Sections such as a hero, a case list or a form that the team can add to any page and fill in. On LG Sonic they were a technical requirement. At the time we built them with ACF PRO flexible content; today we build them as native Gutenberg blocks. The site grew from a simple first version to over 1,000 pages per language on the same set of blocks.
Can After Effects animations be used on a website?
Yes. For LG Sonic we designed the animations in After Effects ourselves, then built them into the site as code that runs in the browser, instead of embedding heavy video files.
What makes a B2B website bring in leads?
A page for each buyer's industry, proof from similar projects and one clear next step. On LG Sonic, industry, product and case pages all lead to a request for an assessment of the visitor's own water.
Do you work from our designs?
Yes. On LG Sonic, the client's team made the page designs; we designed the animations, built everything else, delivered three versions of the site and supported it from 2019 to 2025.
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