Slow website? 8 common problems manufacturers face and how headless CMS helps solve them

At first, the website works well: a few pages, a company overview, a PDF catalog, a form and basic language versions. Over time, new markets, campaigns, technical materials, landing pages, integrations, PIM or ERP data and marketing tools are added. The system that once worked starts limiting performance: content and design are too tightly connected, the frontend is hard to slim down, and each new integration increases dependency on the CMS and backend.

In this situation, headless CMS can be one way to bring order back to the architecture. It separates content from the visual layer of the website, making it easier to develop the frontend and build an architecture prepared for performance and Core Web Vitals. To see where headless CMS really helps, we first need to understand what most often slows down manufacturers’ websites.

1. Why is a company website slow? 8 most common causes

A manufacturer’s company website is rarely just a simple business card today. It often supports sales, serves distributors, provides documentation, generates leads and integrates with systems such as PIM, ERP, CRM, DAM or e-commerce. When such a website still runs on architecture designed for a simpler site, problems start to accumulate: content and design are too tightly connected, the frontend is difficult to develop independently, and each new integration or website layer increases complexity.

1.1 Content and website design are too tightly connected

In a traditional CMS, content, templates and the presentation layer are usually tightly connected. This may work well at the beginning, but over time every larger change affects content, layout and code at the same time. A headless CMS separates these layers and delivers content through APIs, making it possible to develop the frontend independently from the editorial panel.

1.2 A traditional CMS makes it difficult to build a lightweight frontend

If the current CMS dictates the rendering process - in other words, how pages are assembled and displayed to users - the team has less control over frontend weight, the amount of JavaScript and the way HTML is delivered. Google evaluates user experience partly through Core Web Vitals, which measure loading speed, responsiveness and visual stability.

Modern frameworks commonly used with headless CMS platforms - such as Next.js, Nuxt or Astro - make it easier to combine static HTML, code splitting (breaking website code into smaller parts loaded only when needed), selective JavaScript loading and cache mechanisms that store ready-made page elements closer to the user. As a result, pages do not need to be generated from scratch every time someone visits the website.

A headless CMS alone does not automatically guarantee great performance, but it creates the foundation for an architecture that makes achieving it much easier.

1.3 Too many scripts and components load on every page

On older websites - analytics tools, consent management systems, chat widgets, maps and complex components often load across many pages, even when they are only needed in selected sections of the site. This usually happens when the frontend is too tightly connected to the CMS, making it difficult to control exactly what loads on a given page.

The result? The website downloads more code than necessary, responds more slowly to user interactions and performs worse in performance tests. In a headless architecture, it is easier to build a frontend where specific scripts and features run only where they are actually needed.

1.4 The website depends on the CMS and database for every request

If every page has to be generated by the CMS at the exact moment a user visits the website, dependency on the backend, database and response time increases. A modern frontend connected to a headless CMS can pre-generate many pages in advance and then deliver them through cache or a CDN (a network used to store and deliver ready-made content closer to the user), leaving on-demand rendering only where it is truly necessary.

Next.js explicitly supports static page generation combined with CDN caching, while platforms such as Storyblok and Contentful deliver content through CDN-based delivery layers.

1.5 The CMS has been overloaded with roles it was never meant to handle

The problem is not simply that the company has a lot of data, but that over time the CMS starts storing everything: marketing content, product data, files, relationships and even parts of the integration logic. In a more modern architecture, responsibilities are clearly separated: the CMS manages content, the PIM handles product data, the DAM stores digital assets, and APIs - structured methods of exchanging information between systems - connect all these elements into a single ecosystem.

1.6 Every new market or language increases website complexity

Multilingual websites rarely stop at simply translating text. They also require separate URLs, localized content variations, different documentation, dedicated forms and proper language targeting for Google. Contentful, Storyblok and Strapi all provide built-in localization features, while Google recommends using separate URLs for different languages together with proper hreflang implementation - tags that help Google understand which language or regional version of a page should be shown to a specific user. This is one of the reasons why headless CMS platforms support scaling across multiple markets more effectively than architectures based on duplicating entire website structures.

1.7 Integrations are added to a monolith instead of an API-first architecture

An API-first architecture assumes that integrations are designed as part of the system from the very beginning, rather than being added later as workarounds and patches. The presence of systems such as PIM (Product Information Management), ERP (Enterprise Resource Planning), DAM (Digital Asset Management for files like images, videos and documents) or e-commerce platforms is not a problem in itself. The problem appears when every new connection becomes another patch attached to an old CMS instead of part of a consistent API layer - a structured way for systems to exchange data.

Headless CMS platforms fit naturally into this model because they are API-driven by design. Solutions such as Contentful, Storyblok and Strapi include built-in mechanisms for delivering and managing content through APIs, making it easier to build integrations as part of the architecture rather than as another exception added to a monolithic system.

1.8 The website lacks a structured content model

A headless CMS helps organize the content model, but only if the project is not based on simply copying old structures into a new system. It is important to first define page types, components, fields, relationships and rules for content reuse. This allows the frontend to rely on more predictable data structures, making it easier to build lighter components and reduce overall website complexity.

2. How does a headless CMS help solve these problems?

In a traditional CMS, content, templates and the visual layer of the website are usually tightly connected. This means that changing content, layouts, components, languages or even the way pages load often affects the same system and the same dependencies. This model may work well for a simple website, but once a company website grows into a large product catalog with multiple markets and integrations, it starts limiting development.

A headless CMS works differently: it separates content management from the presentation layer and delivers content through APIs. This makes it possible to develop the frontend independently from the editorial panel, while the same content can power a company website, landing pages, partner portals, digital catalogs, applications or additional regional websites.

In practice, a headless CMS is most useful when the issue is not a single heavy image or poorly configured cache, but the entire content architecture. It helps:

• separate content from website presentation - the frontend can evolve independently from the CMS without constantly affecting the editorial structure,
• build a lighter frontend - teams can use technologies such as Next.js, Nuxt or Astro to better control JavaScript, rendering, cache and the elements loaded in the first viewport,
• reduce dependency on the CMS and database - some pages can be generated in advance and delivered through cache or CDN instead of waiting for backend responses every time a user visits the website,
• scale websites across multiple markets and languages - the content model can support multiple language versions and URL structures without duplicating entire websites,
• reuse content across multiple frontends - the same content layer can power different websites and interfaces without forcing one site to handle every feature at once,
• organize system responsibilities more effectively - the CMS manages content, the PIM handles product data, the DAM stores digital assets, the ERP manages operational data, while integrations connect these elements into a consistent ecosystem,
• create a more structured content model - instead of relying on one-off exceptions and manually built layouts, the frontend works with more predictable data structures, reducing website complexity and improving maintainability.

A headless CMS can be a good direction when a slow website is caused not by a single optimization issue, but by an architecture that connects the CMS, frontend, database and integrations too tightly. It makes it easier to develop a lighter frontend, reduce unnecessary dependencies, better control how content loads and build a website prepared for performance and Core Web Vitals.

This is why headless CMS for manufacturers can be a way to organize architecture and improve the performance of complex company websites.

2.1 Contentful, Storyblok or Strapi - What makes these headless CMS platforms different?

Contentful, Storyblok and Strapi are examples of headless CMS platforms that can support a modern website architecture based on separating the CMS from the frontend. However, each of them addresses slightly different technical and business needs.

That is why choosing a system should not start with the question “which CMS is the best?”, but with a diagnosis: what kind of frontend we want to build, how content should be delivered, which language versions need to be supported, which systems the CMS needs to integrate with and what role it should play in the overall ecosystem.

In practice, choosing a CMS for a manufacturing company should depend on the frontend architecture, the number of integrations, SEO requirements and the way content needs to be managed across multiple markets.

• Contentful is a strong fit for organizations that need a scalable, API-first CMS with structured content types, localization capabilities and integrations across a broader digital ecosystem. Contentful implementation is often a good choice where enterprise standards, predictable workflows, multi-channel content delivery and website expansion across multiple markets are key priorities.
• Storyblok works particularly well in projects focused on component-based architecture and fast, modern frontends. Content can be modeled as independent blocks rendered by the frontend in a controlled way, instead of building each page as a separate, heavy template. This helps maintain a cleaner website structure, introduce new page types without increasing the overall frontend weight and better control what actually loads on the user’s side. Storyblok implementation is especially worth considering when the current CMS makes selective content loading, frontend scalability and maintaining a predictable website structure difficult.
• Strapi is an open-source solution that offers a high level of developer flexibility and architectural control. It can be a good option for companies that want more influence over infrastructure, data models, APIs and integration logic. Strapi implementation often makes sense where the organization requires a more custom approach and has a technical team capable of maintaining such an environment.

Contentful, Storyblok and Strapi represent three different approaches to headless architecture. Contentful is often positioned as a scalable content platform, Storyblok aligns well with component-driven frontend architecture, while Strapi offers greater open-source flexibility and technical control. That is why choosing the right platform should come from a diagnosis of the architecture, content model, SEO requirements, integrations and long-term growth plans - not simply from the popularity of a particular CMS.

3. Migrating to a headless CMS: What should you organize before implementation?

Migrating to a headless CMS should not be treated as simply moving content from one system to another. If the new CMS recreates the same problems using newer technology, the project will neither simplify the work of internal teams nor improve the website’s scalability.

That is why, before choosing a tool, it is worth checking where the real problem lies:

• whether the current CMS connects content, layout and frontend too tightly,
• whether it is difficult to implement a lightweight frontend and improve Core Web Vitals,
• whether existing content types, components and templates can be organized without copying the old chaos into the new system,
• whether it is clear which content should be managed in the CMS and which data should come from PIM, DAM, ERP or e-commerce,
• which pages should be static, dynamic or personalized,
• which URLs, SEO metadata and redirects need to be preserved,
• whether the website should support a single channel or also a digital catalog, partner portal, application or additional regional websites.

Only after such a diagnosis can a headless CMS implementation be planned in a meaningful way. In practice, this means:

• defining the business goals of the new website,
• organizing the content model, page types, components and relationships,
• identifying which data should come from PIM, ERP, DAM or other systems,
• planning the role of the frontend, rendering, cache and CDN,
• preparing URLs, redirects and SEO requirements,
• defining how website performance will be measured after implementation.

4. Start with diagnosis, not with choosing a CMS

If the website is slow, it is worth starting with an audit and an analysis of what is really slowing it down. Sometimes technical optimization is enough: organizing images, scripts, cache or the frontend. But often the problem goes deeper - into a content architecture that no longer keeps up with the company’s growth.

That is why it is not enough to look only at the score in a performance testing tool. Only then can you assess whether the current content management system for a manufacturer supports website performance or has become one of the elements slowing down the entire architecture. A company website is no longer just a simple online presence. It is part of a broader digital architecture that has to support the frontend, content, integrations and many types of data without sacrificing performance.

At Tandemite, we help companies diagnose these problems and design modern content systems based on headless architecture. We implement solutions such as Storyblok, Contentful and Strapi, combining them with modern frontend, API-first architecture and product systems. Check what is really slowing down your website - frontend, rendering, CMS or integration architecture. Book an architecture audit and see whether headless CMS is the right direction for your company.

FAQ

Does a headless CMS help speed up a company website?

Yes. A headless CMS helps improve website speed when the problem comes from the architecture: an overly heavy frontend, dependency on an old CMS, too much code or the need to generate every page through the backend. Separating the CMS from the frontend gives teams more control over rendering, cache, JavaScript and the way content is delivered to users.

Is headless CMS good for SEO?

Yes, a well-implemented headless CMS can strongly support SEO. It helps build a faster frontend, control URL structure, manage language versions, implement structured data and reduce indexing issues. The key is proper implementation of the frontend, rendering, redirects and information architecture.

Does headless CMS require PIM and other systems?

Not always, but with larger product catalogs it is often worth separating system responsibilities. PIM manages product data, DAM stores digital assets, ERP handles operational data, and the CMS manages content and the presentation layer. This means the frontend does not have to pull everything from one overloaded system.

Why does headless CMS help improve Core Web Vitals?

Core Web Vitals measure loading speed, responsiveness and visual stability. A headless CMS makes it easier to build the frontend with technologies such as Next.js, Nuxt or Astro, which allow better control over HTML, JavaScript, cache and elements loaded in the first viewport. As a result, it becomes easier to design a website for strong performance results.

Does migrating to a headless CMS mean rebuilding the entire website?

Not always. Migration to a headless CMS can be done gradually and start with the most important parts of the website: the frontend, product section, language versions or areas that affect Core Web Vitals. Before implementation, it is important to check what is really slowing the website down: the CMS, frontend, rendering, integrations, cache or the way content is delivered.

When does headless CMS make the most sense for a manufacturer?

Headless CMS makes the most sense when the manufacturer’s website is complex: it has multiple language versions, a product catalog, integrations with PIM, ERP, DAM or e-commerce, many content types and frontend performance issues. In this situation, headless CMS helps organize the architecture and better prepare the website for growth and performance.

Do Contentful, Storyblok and Strapi solve the same problems?

All three support headless architecture, but they do it differently. Contentful is often chosen as a scalable content platform, Storyblok works well with component-based architecture and modern frontend development, while Strapi offers more open-source flexibility and technical control. The choice should depend on the website architecture, integrations, SEO requirements and growth plans.