Design Switcher
Change the whole look of a website with one click, built from DESIGN.md files.
Choosing a new look for a website usually means mock-ups, meetings and guessing. The Design Switcher puts a Design button in the upper right corner of the real site. One click restyles every page: colours, fonts, buttons, cards and headlines change together while the words stay the same. Each design comes from a DESIGN.md file, a plain text description of a visual style that both people and AI tools can read. It runs live on fullstackpartner.com with 14 designs.
- Stage
- Live on fullstackpartner.com
- Launch market
- Denmark, then the Nordics
- Revenue
- Fixed price projects, add-on designs
- Price
- Planned from DKK 2,495
- Buyer
- Owners, marketing leads, agencies
- Stack
- DESIGN.md · CSS design tokens · JavaScript
The problem
- A redesign is bought from sketches, and the result is only seen when it is too late to change.
- Colours and fonts drift as new pages are added, by different people or by AI tools.
- Visitors who need dark mode or higher contrast get one fixed look.
The product
We move the site onto design tokens: about 20 values for colours, fonts, corners, heading style and shadows that every page reads. Each design is one short block of those tokens, written from a DESIGN.md file. A small script adds the Design button, applies the choice at once without a reload and remembers it in the visitor's browser. The same DESIGN.md is handed to developers and AI tools, so new pages match.
- We read the current site and write its DESIGN.md.
- We replace fixed colours and fonts with design tokens.
- We add the designs the customer wants to compare or offer.
- The Design button goes live, on the whole site or only for the team.
- The chosen design becomes the default, the others can stay as options.
Who pays and why
Business model
| Revenue line | Price | Notes |
|---|---|---|
| DESIGN.md | From DKK 2,495 (planned) | The brand written down as one design file for people and AI. |
| Design Switcher | From DKK 4,995 (planned) | Site moved to tokens, button installed, 3 designs included. |
| Extra design | DKK 995 each (planned) | A new look added as one more token set. |
Market and targets
Every company with a website changes its look every few years, and more and more sites are now built and extended with AI tools that need a written design system. Danish small and mid-sized companies alone run well over 100,000 websites.
Targets and prices are planning assumptions.
Go-to-market
Show it
- Live on fullstackpartner.com with 14 designs (done)
- Explainer page with previews of every design (done)
- Offer it to our existing website customers
Package it
- Ready-made installer for WordPress and common site builders
- DESIGN.md writing as a stand-alone product
- Dark mode and high contrast designs as standard
Agencies
- White label version for web agencies
- Design picker in our own customer projects
- Library of designs made for Danish trades and shops
Channels
| Our own website | Every visitor sees the Design button and can try it at once. |
|---|---|
| Existing customers | Website and app customers can add it to sites we already run. |
| Web agencies | Agencies resell it to their clients as part of a redesign. |
Competition
| Alternative today | Why we win |
|---|---|
| Classic redesign agencies | Sell from sketches, slower and much more expensive. |
| Website builder themes | Change the whole template, not just the look, and often break content. |
| Browser dark mode tools | Only invert colours and do not follow the brand. |
What we measure
- Share of visitors who open the Design button
- Designs tried per visit
- Projects sold per month
- Hours per project
Status and roadmap
- Design button in the header of fullstackpartner.com
- 14 designs as token sets, written from DESIGN.md files
- Instant switch without reload, remembered in the browser
- Link to open a page in any design (?design=name)
- Explainer page with a live preview of every design, English and Danish
- Installer for WordPress and other site builders
- Dark mode and high contrast designs
- Tool that writes a DESIGN.md from any website address
Risks
| Risk | How we handle it |
|---|---|
| Designs that look like other brands | Designs are only inspired by public sites, named as such, and use no logos or brand material. Customer designs are their own. |
| Old sites with fixed styles | We start with an audit and give a fixed price before we begin. |
| Visitors confused by the choice | The button can be shown to the team only, and the site always opens in the main design. |
Want a product like this?
We build version one of products like Design Switcher from about $3,000: web app, admin panel, mobile app and API, live on your own domain. Then we can host and maintain it for $500 a month.