Kerning is the adjustment of space between individual letter pairs: the typographer’s act of looking at two glyphs together and deciding that the space between them is a fraction too wide or too tight. It is the kind of detail only specialists notice, and the reason type designers lose hours on things nobody names but everyone feels. Kern is a WordPress FSE theme built for those specialists: type foundries, type studios, typography educators, and anyone whose work is the letterform itself.
Selling typefaces on the web is a different problem from selling almost anything else. The product is invisible until the buyer interacts with it. The demo has to do the heavy lifting. The site needs to put the typeface in motion: in headings, in body copy, in specimen text, in different weights and styles, so the buyer can see how it behaves before they commit. No general-purpose WordPress theme is designed around that use case. Kern is.
The homepage is built around the typeface showcase: a grid of font cards where each entry shows the face in its own voice, at the weights that make it interesting, with the character that will sell it. Individual typeface pages follow a specimen format: display sizes at the top, body copy weight in the middle, the full character set at the bottom, and a purchase or licence CTA that does not interrupt the reading experience.
Kern works equally well for type studios that do custom type work for clients: the kind of practice where the portfolio is a set of commissioned typeface projects, each with a brief, a process, and a result. The case study template handles that narrative: client, brief, the design decisions, and the final specimen. It is the same editorial architecture as a design studio portfolio, built to carry the weight of typographic detail.
The theme’s own typographic system is self-referential in the best way: a serif display face with a full range of weights, a neutral sans for body text, and a monospace for code samples and specimen labels. Everything is self-hosted. No Google Fonts, no CDN calls, no third-party requests that could break your demo experience at the moment a buyer is deciding.
This is a Full Site Editing theme. Every template lives in the Site Editor, every pattern is native to the block editor, and a non-developer can manage the font catalog without touching code. Add a new typeface, update a specimen, change the homepage order: all of it is editable in the Site Editor without a developer in the loop.
Kern is part of the Colophon FSE Collection: 52 purpose-built WordPress themes sharing the same accessible, FSE-native core. WCAG 2.2 AA compliance, keyboard navigation, visible focus states, and self-hosted fonts throughout. Built for the web the way typefaces are built for print: with every detail considered before shipping.
What it does well
- Typeface showcase grid: font cards showing each face at its most expressive weights, linking through to individual specimen pages
- Type specimen page template: display sizes, body copy weights, full character set, and a licence or purchase CTA; all native blocks
- Self-referential type system: the theme’s own fonts are chosen to demonstrate the typographic thinking the audience values
- Commissioned type case study: a process narrative template: client, brief, design decisions, and final specimen
- Self-hosted fonts throughout: no Google Fonts, no CDN, no third-party requests on the demo page
- Specimen text block pattern: a ready-made block for putting any loaded font through its paces at multiple sizes and weights
- OFL and commercial licence callout: a native pattern for presenting licence terms clearly at the point of decision
Preview
Download
Kern is free and open source under the GPLv2 license. Download the zip from GitHub and install it manually, or install from the WordPress theme directory when the review is complete.
License: GPL v2 or later · Requires WordPress 6.5+
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