Introduction

Kalium 3 is a creative WordPress and WooCommerce theme designed for portfolios, agencies, and content-heavy sites that also need a polished shop. You can use it for business, photography, architecture, restaurants, hotels, education, fitness, blogs, SaaS, and many other niches without changing themes. For a similar focus on business and portfolio needs, consider the Amphawa for Business Corporate Portfolio theme.

The theme focuses on clean layouts, strong typography, and flexible page building. It supports WordPress 6.6.x and WooCommerce 9.x, and it ships with a broad set of templates, portfolio layouts, and design controls that let your content stand out instead of fighting with the design.

Key Features at a Glance

• Starter sites and templates for many niches, installable with one click
• Full WooCommerce support with advanced shop tools and catalog mode
• Multiple page builders: Elementor, WPBakery, and Gutenberg blocks
• Seven portfolio single item types and several portfolio listing styles. If you're looking for a dedicated portfolio solution, Gaia is an HTML5 based Portfolio Theme designed for showing works on a clean and elegant layout.
• Rich typography and font management with multiple font sources
• Accessibility-ready, responsive, and optimized for Core Web Vitals
• Multilingual and RTL support, including WPML certification
• Bundled premium plugins and custom widgets for design and marketing
• Extensive documentation, tutorials, and dedicated helpdesk support
• Long-term development with frequent updates and changelog tracking

Layout, Design, and Page Building

Kalium keeps the frontend clean and minimal, with plenty of white space and restrained animation. The goal is to give you a layout where your work, products, or content lead the experience.

You work with reusable template parts for headers, content sections, and footers. The theme includes a header builder and support for unlimited header layouts, including mega and off-canvas menus. This lets you tailor navigation for large portfolios, content libraries, or complex shops without custom coding.

On the page-building side, you can use your preferred tool:

• Elementor, with dedicated starter sites and content sections
• WPBakery Page Builder, with more than 19 custom widgets made by the theme authors
• Gutenberg, with block-based support for key content types

This flexibility matters if you collaborate with different teams or inherit existing content. You are not locked into a single builder, and you can mix template parts and block-based layouts as WordPress continues to evolve.

Blogging is covered with several layouts and post styles, including standard, gallery, photo, video, quote, audio, and link formats. The design remains consistent across desktop, tablet, and mobile, with responsive and retina-ready templates and adaptive images to reduce page weight.

E‑Commerce and WooCommerce Tools

Kalium offers full WooCommerce support with layouts built specifically for shops rather than treated as an afterthought. The theme highlights high-converting product and category templates and supports both standard stores and catalog-style sites.

You can:

• Run a normal store with prices, carts, and checkout
• Switch to catalog mode to hide prices and add-to-cart buttons
• Use an AJAX mini cart for smoother adding and updating
• Show product carousels on landing pages or category pages
• Use wishlist features and tailored storefront arrangements

The theme bundles several WooCommerce-related premium plugins, including a product filter and a product size guide. These help shoppers narrow down large catalogs and understand sizing without leaving product pages, which is valuable for fashion, fitness, and similar niches.

Compatibility with WooCommerce add-ons like Germanized, Stripe payments, variation swatches, and product filter extensions widens the range of use cases. If you run a complex shop with compliance or localization needs, this support helps you avoid conflicts.

Customization, Typography, and Content Structure

Kalium places a strong emphasis on typography and visual structure. It includes a font management system that lets you work with several font sources:

• Google Fonts, with a large and regularly updated library
• Adobe Fonts
• Premium typefaces, including an included Function Pro family
• Custom fonts that you upload directly to your server

You can manage font rendering, preloading, and conditional loading, which ties directly into performance and accessibility. Combined with the custom skin generator and rich theme options, you can align the site with your brand without heavy custom CSS.

For content, you get:

• Seven portfolio single item types, including side, columned, carousel, zig-zag, fullscreen, lightbox, and fully custom layouts
• Several portfolio listing types with one to six columns and masonry options
• Three blog types and multiple blog layouts
• Ready-made pages like About, Team, Coming Soon, and Maintenance

Custom WPBakery widgets cover team members, services, headings, scroll boxes, clients, social networks, contact forms, portfolios, Dribbble galleries, blog posts, pricing tables, product carousels, and like-and-share sections. These help you assemble content-rich pages quickly without repeating layout work.

For developers and power users, Kalium supports custom CSS, LESS, and Sass per screen size, plus semantic HTML5 and modern CSS. The theme’s authors highlight the use of technologies such as Bootstrap, Sass, React, HTML5, CSS, and PHP 8, which helps keep the codebase maintainable and ready for future WordPress updates.

Performance, Accessibility, and SEO

Performance is one of the core selling points in the visual material for Kalium. The theme claims Core Web Vitals-level speed, with:

• CSS and asset optimization
• The ability to disable unused libraries
• Font preloading and efficient font handling
• Adaptive images to serve appropriate sizes per device

The marketing material shows Google PageSpeed and GTmetrix results with top scores, including grades like Desktop 100 and Mobile 97 with Grade A. While your results will depend on hosting and content, the theme infrastructure is tuned to make these scores attainable.

Accessibility is another focus. Kalium is described as accessibility-ready, following WCAG 2.0 and meeting the AA level, which is important for usability and in some industries a requirement. Combined with responsive layouts, keyboard-friendly navigation, and careful color and contrast handling, this makes the theme a candidate for sites where inclusion and compliance matter.

On the SEO side, Kalium uses structured, semantic markup and is promoted as SEO optimized. It works with popular SEO plugins such as Rank Math, Yoast SEO, and All in One SEO, allowing you to manage metadata, sitemaps, and schema without fighting the theme’s structure.

The theme is also GDPR ready and offers a consent model for third-party services, which helps you handle tracking and embeds in a more compliant way.

Multilingual, Localization, and Global Use

If you target multiple regions or languages, Kalium includes several helpful features:

• WPML certification and compatibility, tested by the WPML team
• Support for multilingual plugins such as Polylang and Weglot
• RTL support for right-to-left languages
• Translation files in standard formats and existing translations contributed by users in many European languages

This lets you run a single multilingual site or localized regional sites from the same theme, while keeping typography, layout, and accessibility consistent.

Usability and Real-World Use Cases

Kalium is built for both beginners and experienced WordPress professionals. The authors highlight that more than 46,000 users, including marketers and professionals, rely on it.

Key usability elements include:

• One-click starter site installer that imports pages, posts, sliders, widgets, and theme options
• Around 25 professionally designed starter sites, with more added over time
• Dedicated Elementor starter sites for niches such as architecture, fitness, restaurants, and weddings
• Clear theme options and per-page controls for layout and header behavior

From the demo list and target niches, realistic projects include:

• Design portfolios and agency sites using the portfolio layouts and typography controls
• Photography and architecture showcases with fullscreen galleries, lightbox views, and adaptive images
• Restaurants and hotels with menu sections, booking forms, location maps, and multilingual content
• Fashion, bookstore, and fitness shops using the WooCommerce layouts, product filters, and size guides
• Professional services like law firms, medical practices, and consulting agencies using clean layouts and strong typography
• Content-driven blogs, SaaS landing pages, and startup sites using the landing page templates and block-based sections

In all of these, the theme’s strength is that you can start from a focused starter site and tune it rather than building everything from scratch.

Competitor Context

Compared with many portfolio and multipurpose themes, Kalium stands out in a few areas highlighted by the provided material.

First, it offers genuine multi-builder support. Many themes favor a single page builder. Kalium supports Elementor, WPBakery, and Gutenberg, and even provides custom widgets and starter sites tuned to these tools. That gives you more freedom to work with existing content or team preferences.

Second, the portfolio system is deeper than in standard business themes. Seven single item types and multiple listing layouts allow you to present work in a way that fits photography, product design, editorial work, or case studies, instead of forcing everything into a single grid.

Third, performance and accessibility get more attention than usual. The focus on Core Web Vitals, disabling unused assets, adaptive images, and WCAG-based accessibility is more detailed than typical “fast and responsive” claims in this category.

Fourth, typography and multilingual support are more advanced than in many creative themes. With multiple font sources, detailed font loading controls, WPML certification, and RTL support, Kalium is suitable for international and design-critical brands.

Finally, the bundled plugin set is extensive, including ACF Pro, WPBakery, Elementor support, Revolution Slider, LayerSlider, WooCommerce Product Filter, and Product Size Guide. The authors claim a combined value of over 300 dollars in included plugins, which can reduce costs when you launch new projects.

Customer Feedback and Reputation

Customer feedback for Kalium is consistently positive in the provided testimonials and visuals. The theme has 47,185 sales, and its authors hold Power Elite Author status, with more than a decade on the Envato marketplace and weekly top-seller placements highlighted in the imagery.

Representative customer comments include:

• One user describes it as the best portfolio theme they have bought in three years, praising the balance between flexibility and a clean, elegant design.
• Another calls out the very clean and minimal design, saying it is great for creatives and backed by fantastic customer support.
• Several reviewers emphasize how easy it is to use, even for non-professionals, noting that the theme is well coded and straightforward to understand.
• Others highlight its flexibility and individual character, calling it one of the most flexible and best-coded themes they have worked with.
• Many testimonials focus on customer support, describing it as fast, reliable, responsive, and personal.

Industry critics also appear in the imagery, praising the theme for a graceful yet powerful design and strong ratings on design award platforms. This mix of user and critic feedback reinforces the theme’s reputation for design quality and ongoing support.

Support, Documentation, and Updates

Kalium backs its feature set with a support and learning ecosystem:

• A documentation hub with more than 120 articles that is updated regularly
• Multiple HD video tutorials to help you through setup and customization
• A helpdesk system for support tickets
• An official community group where users can share experiences and ask questions

The theme has been on the market for around eight years and receives continuous free updates. The changelog is public, and the imagery stresses that updates bring new features, improvements, and bug fixes. The authors have more than 15 years of experience and position themselves as a stable, long-term team behind the product.

Conclusion

Kalium 3 is a mature creative WordPress and WooCommerce theme aimed at users who care about design quality, flexibility, and long-term maintainability. You get a wide range of starter sites, strong portfolio and shop tools, and support for your preferred page builder, all wrapped in a layout that prioritizes clarity over visual noise.

If you want a theme that can handle a design portfolio, a serious blog, and a revenue-generating shop on the same foundation, Kalium offers a solid, well-documented option. With its focus on performance, accessibility, multilingual support, and ongoing updates, it can serve as a long-term base for your projects rather than a short-term experiment.